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ENERGY METALS LTD — Capital/Financing Update 2014
Jan 29, 2014
64845_rns_2014-01-29_27df2f42-877b-4311-b188-76453ab06099.pdf
Capital/Financing Update
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ABN 63 111 306 533
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ASX ANNOUNCEMENT
30[th ] January 2014
ASX Code - EME
For further information, contact: Dr Weidong Xiang Energy Metals Limited
Telephone: 61 8 9322 6904 Facsimile: 61 8 9321 5240 Email: [email protected] Level 2, 8 Colin Street West Perth WA 6005
PO Box 1323 West Perth WA 6872
This report and further information are available on Energy Metals’ website at:
www.energymetals.net
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NGALIA REGIONAL PROJECT EXPLORATION UPDATE BIGWEST DRILLING PROGRAM
HIGHLIGHTS
-
3m @ 413ppm U3O8 from 111m in BWRC1337 including 1m @ 518ppm U3O8 from 112m
-
2m @ 892ppm U3O8 from 176m in BWRC1347 including 1m @ 1,129ppm U3O8 from 176m
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2m @ 627ppm U3O8 from 106m in BWRC1367 including 1m @ 1,079ppm U3O8 from 106m
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3m @ 474ppm U3O8 from 140m in BWRC1390 including 1m @ 1,221ppm U3O8 from 140m
-
1m @ 4,906ppm U3O8 from 143m in BWRC1392
Energy Metals Limited (ASX: EME) is pleased to announce results from Phase-2 of its RC drilling program recently completed at the Bigwest target (EME 100%), located on the northern margin of the Ngalia Basin approximately 8km west of the Bigrlyi Joint Venture tenements in the Northern Territory (Figure 1).
Phase-1 of the RC drilling program, resulted in the discovery of significant uranium mineralisation along the Unit B – Unit C sandstone contact that extends to the west from the Bigrlyi deposit. A further 53 RC holes (total 9,085m) have now been completed at Bigwest in the Phase-2 program. In addition, 22 reconnaissance holes (total 2,937m) have been completed at the Autobahn target, located approximately 15km west of Bigrlyi.
The program at Bigwest was aimed at establishing the continuity, width, and tenor of uranium mineralisation along the Unit B – Unit C contact. Drilling was undertaken at a spacing of approximately 50m around previous significant intercepts; additional holes were designed to test the Unit C – Unit D contact at depth below the weathering profile.
1
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Figure 1. Location plan for the Ngalia Regional Project showing location of the Bigwest and Autobahn target areas
Processed down-hole gamma logs and/or chemical assay results have now been received for all holes, the locations and details of which are listed in Annexure 1. Both gamma log (eU3O8) and chemical assay (U3O8) results are available for most holes; however, in several cases difficult ground conditions prevented gamma probe access and anomalous intercepts were instead identified by hand-held scintillometer and portable XRF measurements of drill spoils. There are two holes (BWRC1376, BWRC1390) where gamma logs could not be measured over a mineralised interval and only chemical assay results are reported for those holes. Significant gamma log intercepts are reported in Annexure 2 and significant intercepts based on chemical assays are reported in Annexure 3 (see the section below for an explanation of the terms used and for additional information and qualifications associated with the results).
Results from the Bigwest target have been encouraging with 32 out of 59 holes reporting intercepts with U3O8 grade (ppm) multiplied by thickness (metres) values greater than 100, and 17 holes having intercepts >400 (Figure 2). Numerous significant intersections occur over a strike length of 2km on the Unit B – Unit C contact (southern redox boundary in Figure 2) including 1m @ 4,906ppm U3O8 from 143m (1.05m @ 5,799ppm eU3O8 from 142.4m) in BWRC1392 , which is the highest grade intercept yet reported from Bigwest. Most intercepts include anomalous V2O5 with a maximum value of 1.05% V2O5 reported over 1m in BWRC1337 (Annexure 3). Difficult ground conditions were encountered in the vicinity of the Unit C – Unit D contact (northern redox contact in Figure 2) due to deep weathering, and attempts to test for mineralisation at this contact have not been successful to date.
2
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Figure 2. Hole collar locations at the Bigwest target with significantly mineralised holes shown in red (grade multiplied by thickness >400 ppm·m)
At the Autobahn target reduced sandstone units were encountered at depth in a number of holes giving an indication that conditions are favourable for the occurrence of uranium mineralisation; however, only one hole (BWRC13101) recorded a significant intercept. The Autobahn target area shows unexpected structural and stratigraphic complexity and further work is required to trace the prospective horizons from the adjacent Bigwest target.
The Phase-1 and Phase-2 drilling programs at the Bigwest target have successfully tested the distribution and grade of uranium mineralisation at approximately 50m intervals along 2 km of strike-length west of Bigrlyi. Energy Metals considers that Bigwest, as a potential satellite deposit to the main Bigrlyi deposit, is capable of contributing additional uranium resources to Bigrlyi project as a whole. The data are considered to be of sufficient density and quality to proceed with estimation of an initial mineral resource, and mineral resource consultants CSA Global have been appointed for this purpose.
For and on behalf of the Board
Weidong Xiang Managing Director 30[th] January 2014
3
In accordance with the 2012 JORC reporting guidelines, a summary of the information associated with these exploration results is as follows:
The Bigwest and Autobahn targets are located on Exploration Licences EL24453 and EL24533, respectively, which are 100% owned and operated by Energy Metals Ltd.
Bigrlyi and associated satellite deposits and exploration targets are tabular, stratiform, sandstone-hosted uranium-vanadium deposits of Carboniferous age located on the northern margin of the Ngalia Basin (NT). The prospective stratigraphy lies within a geological unit known as the Mt Eclipse Sandstone. The mineralisation is controlled by physical and chemical characteristics of the host rock such as permeability and redox state and is influenced by primary depositional and sedimentological features.
The Bigwest target was tested by reverse circulation (RC) drilling on drill lines with a nominal 50m spacing (eastings). Drill holes were angled at a nominal 60 degrees to the north to optimally intersect the mineralisation in steeply south-dipping beds. All intersections are down-hole widths with the true thickness estimated to be 75- 80% of the down-hole thickness, based on the dip of the stratigraphy in outcrop to the north and south of the drilling area and from geological interpretation.
Drill holes were probed by a 33mm calibrated Auslog down-hole gamma tool to obtain a total gamma count reading with depth at 5cm intervals. Uranium mineralisation grades derived from the down-hole gamma ray logging results are annotated with a sub-prefix ‘e’ because they have been determined as uranium equivalent grades. The eU3O8 results were calculated by David Wilson BSc, MSc, MAusIMM, from 3D Exploration Pty Ltd based in Perth, Western Australia using raw gamma probe data supplied by Energy Metals Ltd.
A significant intercept is defined using a 100ppm U3O8 or eU3O8 cut-off grade with a minimum thickness of 1m and a maximum internal dilution of 3m and no external dilution. The “inc.” intersections are determined using a 500ppm U3O8 or eU3O8 cut-off grade with a minimum thickness of 1m and a maximum internal dilution of 3m and no external dilution. Gamma log intersections are composites of 5cm deconvolved eU3O8 data determined using a calibrated gamma probe. Chemically assayed intersections have been determined from ca.3-5 kg size sub-samples of metre-interval RC drill spoils. Samples were measured for uranium using the pressed-powder-pellet XRF method.
Because of differences in sampling width and differences in sampling volumes, chemical assay U3O8 results may not exactly match the processed gamma log eU3O8 values. Gamma radiation is measured from a volume surrounding the drill hole that has a diameter of approximately 70cm. The gamma probe therefore samples a much larger volume than RC drill spoil or drill core samples recovered from a drill hole (diameter of ca.14cm in this case). There are 16 holes with eU3O8 >100ppm but with gamma log intercepts <1.0m width that do not classify as significant intercepts as listed in Annexure 2, however, based on chemical assay data sampled over metre intervals, these holes have intercepts that classify as significant (see Annexure 3).
4
Annexure 1. Collar coordinates for the 2013 RC Phase-2 drilling
at the Bigwest and Autobahn Targets
| HOLE NUMBER |
EXPLORATION TARGET |
EASTING (m) |
NORTHING (m) |
ELEVATION (m) |
TOTAL DEPTH (m) |
TRUE AZIMUTH (degrees) |
DIP (degrees) |
|---|---|---|---|---|---|---|---|
| BWRC1301 | BIGWEST | 702902 | 7539190 | 642.2 | 121 | 325 | -60 |
| BWRC1334 | BIGWEST | 702513 | 7538738 | 647.1 | 96 | 325 | -60 |
| BWRC1335 | BIGWEST | 701350 | 7538069 | 645.2 | 168 | 333 | -60 |
| BWRC1336 | BIGWEST | 701244 | 7538065 | 644.8 | 108 | 333 | -60 |
| BWRC1337 | BIGWEST | 701150 | 7538023 | 644.3 | 132 | 333 | -60 |
| BWRC1338 | BIGWEST | 700933 | 7537940 | 643.2 | 144 | 333 | -60 |
| BWRC1339 | BIGWEST | 700445 | 7537781 | 644.0 | 192 | 345 | -60 |
| BWRC1340 | BIGWEST | 699854 | 7537702 | 644.0 | 276 | 333 | -60 |
| BWRC1341 | BIGWEST | 701438 | 7538130 | 645.6 | 144 | 333 | -60 |
| BWRC1342 | BIGWEST | 701654 | 7538208 | 646.4 | 126 | 325 | -55 |
| BWRC1343 | BIGWEST | 701747 | 7538249 | 646.9 | 132 | 325 | -55 |
| BWRC1344 | BIGWEST | 701928 | 7538334 | 647.7 | 150 | 325 | -60 |
| BWRC1345 | BIGWEST | 702014 | 7538384 | 648.1 | 114 | 325 | -60 |
| BWRC1346 | BIGWEST | 701830 | 7538314 | 647.2 | 90 | 325 | -60 |
| BWRC1347 | BIGWEST | 701861 | 7538257 | 647.5 | 198 | 325 | -60 |
| BWRC1348 | BIGWEST | 701140 | 7538052 | 644.3 | 96 | 333 | -60 |
| BWRC1349 | BIGWEST | 701162 | 7537996 | 644.4 | 180 | 333 | -60 |
| BWRC1350 | BIGWEST | 698289 | 7537297 | 645.0 | 60 | 337 | -60 |
| BWRC1351 | AUTOBAHN | 694350 | 7536054 | 645.0 | 90 | 335 | -60 |
| BWRC1352 | AUTOBAHN | 694371 | 7536002 | 645.0 | 108 | 335 | -60 |
| BWRC1353 | AUTOBAHN | 694391 | 7535943 | 645.0 | 114 | 335 | -60 |
| BWRC1354 | AUTOBAHN | 694409 | 7535892 | 645.0 | 174 | 335 | -60 |
| BWRC1355 | AUTOBAHN | 694429 | 7535840 | 645.0 | 90 | 335 | -60 |
| BWRC1356 | BIGWEST | 701307 | 7538174 | 645.1 | 186 | 333 | -62 |
| BWRC1357 | BIGWEST | 700842 | 7537901 | 642.7 | 162 | 333 | -60 |
| BWRC1358 | BIGWEST | 701666 | 7538185 | 646.5 | 180 | 325 | -60 |
| BWRC1359 | BIGWEST | 702113 | 7538413 | 648.3 | 162 | 325 | -60 |
| BWRC1360 | BIGWEST | 702183 | 7538470 | 648.5 | 132 | 325 | -60 |
| BWRC1361 | BIGWEST | 702270 | 7538532 | 648.6 | 120 | 325 | -60 |
| BWRC1362 | BIGWEST | 702365 | 7538572 | 648.4 | 168 | 325 | -60 |
| BWRC1363 | BIGWEST | 702449 | 7538644 | 647.7 | 144 | 325 | -60 |
| BWRC1364 | BIGWEST | 702530 | 7538711 | 646.9 | 138 | 325 | -60 |
| BWRC1365 | BIGWEST | 701778 | 7538407 | 647.3 | 120 | 325 | -60 |
| BWRC1366 | BIGWEST | 701399 | 7538090 | 645.4 | 180 | 333 | -60 |
| BWRC1367 | BIGWEST | 701299 | 7538045 | 645.1 | 168 | 333 | -60 |
| BWRC1368 | BIGWEST | 701893 | 7538303 | 647.5 | 156 | 325 | -60 |
| BWRC1369 | BIGWEST | 701802 | 7538261 | 647.1 | 168 | 325 | -60 |
| BWRC1370 | BIGWEST | 701911 | 7538275 | 647.6 | 204 | 325 | -60 |
5
| BWRC1371 | BIGWEST | 701824 | 7538327 | 647.2 | 216 | 325 | -50 |
|---|---|---|---|---|---|---|---|
| BWRC1372 | BIGWEST | 701316 | 7538020 | 645.1 | 216 | 333 | -60 |
| BWRC1373 | BIGWEST | 701197 | 7538044 | 644.6 | 120 | 333 | -60 |
| BWRC1374 | BIGWEST | 701112 | 7538007 | 644.2 | 138 | 333 | -60 |
| BWRC1375 | BIGWEST | 701066 | 7538017 | 643.9 | 96 | 333 | -60 |
| BWRC1376 | BIGWEST | 701078 | 7537985 | 644.0 | 150 | 333 | -60 |
| BWRC1377 | BIGWEST | 700980 | 7537957 | 643.4 | 150 | 333 | -60 |
| BWRC1378 | BIGWEST | 700887 | 7537921 | 643.0 | 150 | 333 | -60 |
| BWRC1379 | BIGWEST | 700830 | 7537929 | 642.6 | 120 | 333 | -60 |
| BWRC1380 | BIGWEST | 700791 | 7537883 | 642.5 | 72 | 333 | -60 |
| BWRC1381 | BIGWEST | 700752 | 7537837 | 642.2 | 102 | 333 | -60 |
| BWRC1382 | BIGWEST | 700704 | 7537955 | 642.2 | 168 | 333 | -60 |
| BWRC1383 | BIGWEST | 701620 | 7538166 | 646.4 | 180 | 325 | -60 |
| BWRC1384 | BIGWEST | 701640 | 7538234 | 646.4 | 90 | 325 | -60 |
| BWRC1385 | BIGWEST | 701716 | 7538201 | 646.6 | 174 | 324 | -60 |
| BWRC1386 | BIGWEST | 701817 | 7538235 | 647.1 | 198 | 325 | -60 |
| BWRC1387 | BIGWEST | 701875 | 7538227 | 647.6 | 270 | 325 | -62 |
| BWRC1388 | BIGWEST | 701925 | 7538244 | 647.5 | 270 | 325 | -62 |
| BWRC1389 | BIGWEST | 701950 | 7538303 | 647.7 | 192 | 325 | -60 |
| BWRC1390 | BIGWEST | 701988 | 7538333 | 648.0 | 174 | 325 | -60 |
| BWRC1391 | BIGWEST | 702070 | 7538387 | 648.1 | 168 | 325 | -60 |
| BWRC1392 | BIGWEST | 702154 | 7538429 | 648.5 | 174 | 323 | -60 |
| BWRC1393 | AUTOBAHN | 694451 | 7535789 | 645.0 | 120 | 335 | -60 |
| BWRC1394 | AUTOBAHN | 694471 | 7535737 | 645.0 | 120 | 335 | -60 |
| BWRC1395 | AUTOBAHN | 693868 | 7535623 | 645.0 | 168 | 335 | -60 |
| BWRC1396 | AUTOBAHN | 693115 | 7535307 | 645.0 | 120 | 335 | -60 |
| BWRC1397 | AUTOBAHN | 693138 | 7535240 | 645.0 | 168 | 335 | -60 |
| BWRC1398 | AUTOBAHN | 693301 | 7535359 | 645.0 | 156 | 335 | -60 |
| BWRC1399 | AUTOBAHN | 693181 | 7535692 | 645.0 | 174 | 335 | -60 |
| BWRC13100 | AUTOBAHN | 693201 | 7535628 | 645.0 | 94 | 335 | -60 |
| BWRC13101 | AUTOBAHN | 693226 | 7535564 | 645.0 | 180 | 335 | -60 |
| BWRC13102 | AUTOBAHN | 693547 | 7535521 | 645.0 | 114 | 335 | -60 |
| BWRC13103 | AUTOBAHN | 693883 | 7535577 | 645.0 | 234 | 335 | -60 |
| BWRC13104 | AUTOBAHN | 693250 | 7535495 | 645.0 | 137 | 335 | -60 |
| BWRC13105 | AUTOBAHN | 693275 | 7535426 | 645.0 | 138 | 335 | -60 |
| BWRC13107 | AUTOBAHN | 693562 | 7535475 | 645.0 | 150 | 335 | -60 |
| BWRC13106 | AUTOBAHN | 694148 | 7535731 | 645.0 | 108 | 335 | -60 |
| BWRC13108 | AUTOBAHN | 694165 | 7535691 | 645.0 | 90 | 335 | -60 |
| BWRC13109 | AUTOBAHN | 694610 | 7535920 | 645.0 | 90 | 335 | -60 |
| BWRC13110 | BIGWEST | 702198 | 7538444 | 648.6 | 180 | 325 | -60 |
| BWRC13111 | BIGWEST | 702138 | 7538455 | 648.4 | 126 | 325 | -60 |
| BWRC13112 | BIGWEST | 702168 | 7538402 | 648.5 | 204 | 325 | -62 |
| BWRC13113 | BIGWEST | 702085 | 7538461 | 648.2 | 72 | 325 | -60 |
6
Annexure 2. Significant eU3O8 (Processed Gamma Log) results from the 2013 RC Phase-2 Drilling Program at Bigwest.
| Hole Number | From (m) |
To (m) | Width (m) |
eU3O8 (ppm) |
|---|---|---|---|---|
| BWRC1337 | 104.48 | 105.48 | 1.00 | 117 |
| and | 110.33 | 113.83 | 3.50 | 295 |
| BWRC1342 | 106.53 | 110.03 | 3.50 | 258 |
| BWRC1347 | 176.11 | 177.71 | 1.60 | 932 |
| inc | 176.41 | 177.41 | 1.00 | 1,334 |
| BWRC1359 | 129.72 | 131.07 | 1.35 | 561 |
| BWRC1367 | 105.74 | 107.64 | 1.90 | 283 |
| BWRC1368 | 117.93 | 118.93 | 1.00 | 286 |
| BWRC1370 | 167.79 | 170.09 | 2.30 | 438 |
| and | 176.04 | 178.94 | 2.90 | 413 |
| BWRC1372 | 198.97 | 200.42 | 1.45 | 218 |
| BWRC1379 | 93.19 | 95.89 | 2.70 | 185 |
| BWRC1387 | 247.54 | 248.84 | 1.30 | 434 |
| BWRC1392 | 142.39 | 143.44 | 1.05 | 5,799 |
| BWRC13101 | 128.28 | 129.28 | 1.00 | 107 |
| BWRC13112 | 177.40 | 178.40 | 1.00 | 422 |
Annexure 3. Significant U3O8 & V2O5 chemical assay results from the 2013 RC Phase-2 Drilling Program at Bigwest.
| Hole Number | From (m) |
To (m) |
Width (m) | U3O8 (ppm) |
V2O5 (ppm) |
|---|---|---|---|---|---|
| BWRC1334 | 65 | 66 | 1 | 189 | 146 |
| BWRC1335 | 145 | 146 | 1 | 103 | 553 |
| BWRC1337 | 111 | 114 | 3 | 413 | 7,498 |
| inc. | 112 | 113 | 1 | 518 | 10,550 |
| BWRC1338 | 125 | 126 | 1 | 145 | 1,403 |
| BWRC1339 | 171 | 172 | 1 | 155 | 2,553 |
| BWRC1341 | 117 | 118 | 1 | 175 | 4,302 |
| BWRC1342 | 106 | 110 | 4 | 356 | 2,185 |
| inc. | 106 | 107 | 1 | 714 | 4,481 |
| inc. | 109 | 110 | 1 | 624 | 3,070 |
| BWRC1345 | 94 | 95 | 1 | 202 | 259 |
| BWRC1346 | 66 | 68 | 2 | 217 | 468 |
| BWRC1347 | 176 | 178 | 2 | 892 | 1,073 |
| inc. | 176 | 177 | 1 | 1,129 | 441 |
| BWRC1357 | 125 | 126 | 1 | 541 | 3,660 |
| BWRC1358 | 160 | 161 | 1 | 627 | 3,356 |
7
| BWRC1359 | 130 | 131 | 1 | 471 | 1,051 |
|---|---|---|---|---|---|
| BWRC1362 | 142 | 143 | 1 | 1,142 | 605 |
| BWRC1367 | 106 | 108 | 2 | 627 | 303 |
| inc. | 106 | 107 | 1 | 1,097 | 407 |
| and | 151 | 152 | 1 | 313 | 1,166 |
| BWRC1368 | 118 | 119 | 1 | 346 | 459 |
| BWRC1370 | 167 | 169 | 2 | 498 | 262 |
| inc. | 167 | 168 | 1 | 868 | 368 |
| and | 175 | 178 | 3 | 341 | 1,006 |
| inc. | 177 | 178 | 1 | 620 | 2,258 |
| BWRC1372 | 198 | 200 | 2 | 323 | 808 |
| BWRC1376 | 124 | 125 | 1 | 143 | 1,312 |
| BWRC1377 | 126 | 127 | 1 | 243 | 1,280 |
| BWRC1379 | 94 | 96 | 2 | 248 | 2,365 |
| BWRC1383 | 147 | 148 | 1 | 127 | 773 |
| BWRC1384 | 67 | 68 | 1 | 412 | 807 |
| BWRC1386 | 177 | 178 | 1 | 250 | 1,141 |
| BWRC1387 | 247 | 249 | 2 | 420 | 955 |
| inc. | 247 | 248 | 1 | 717 | 1,121 |
| BWRC1388 | 222 | 223 | 1 | 125 | 339 |
| and | 236 | 237 | 1 | 107 | 791 |
| BWRC1389 | 163 | 164 | 1 | 110 | 204 |
| BWRC1390 | 140 | 143 | 3 | 474 | 714 |
| inc. | 140 | 141 | 1 | 1,221 | 1,503 |
| BWRC1392 | 143 | 144 | 1 | 4,906 | 1,519 |
| BWRC13110 | 150 | 151 | 1 | 179 | 341 |
| BWRC13111 | 96 | 97 | 1 | 127 | 148 |
| BWRC13112 | 177 | 178 | 1 | 409 | 420 |
8
Competent Persons Statement
Information in this report relating to exploration results, data and cut-off grades is based on information compiled by Dr Wayne Taylor and Mr Lindsay Dudfield. Mr Dudfield is a member of the AusIMM and the AIG. Dr Taylor is a member of the AIG and is a full time employee of Energy Metals; Mr Dudfield is a consultant to Energy Metals. They both have sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking to qualify as a Competent Person as defined in the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves – The JORC Code (2012)”. Dr Taylor and Mr Dudfield both consent to the inclusion of the information in the report in the form and context in which it appears.
Information in this report relating to the determination of the gamma probe results and geophysical work is based on information compiled by Mr David Wilson. Mr Wilson is a member of the AusIMM and the AIG. Mr Wilson is a consultant to Energy Metals. He has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves – The JORC Code (2012)”. Mr Wilson consents to the inclusion of the information in the report in the form and context in which it appears.
9
Section 1 Sampling Techniques and Data
| Criteria | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|
| Sampling | Nature and quality of sampling (eg cut channels, random chips, or | | The Bigwest target was sampled by reverse circulation (RC) drilling |
| techniques | specific specialised industry standard measurement tools appropriate | on drill lines with a nominal 50m spacing (eastings). At both Bigwest | |
| to the minerals under investigation, such as down hole gamma | and Autobahn drill holes were angled at a nominal 60 degrees to the | ||
| sondes, or handheld XRF instruments, etc). These examples should | north to optimally intersect the mineralisation in steeply south-dipping | ||
| not be taken as limiting the broad meaning of sampling. | beds. Drill holes were probed by a 33mm calibrated Auslog downhole | ||
| Include reference to measures taken to ensure sample representivity | gamma tool to obtain a total gamma count reading with depth at 5cm | ||
| and the appropriate calibration of any measurement tools or systems | intervals (see below for tool calibration information). | ||
| used. | | The total count gamma logging method used here is a common | |
| Aspects of the determination of mineralisation that are Material to the | method used to estimate uranium grade where the radiation | ||
| Public Report. | contribution from thorium and potassium is small (as is the case for | ||
| In cases where ‘industry standard’ work has been done this would be | sandstone-hosted deposits of the Bigrlyi-type considered here). | ||
| relatively simple (eg ‘reverse circulation drilling was used to obtain 1 | Background gamma rays from thorium and potassium add the | ||
| m samples from which 3 kg was pulverised to produce a 30 g charge | equivalent of a few parts per million to the equivalent uranium values | ||
| for fire assay’). In other cases more explanation may be required, | and are relatively constant in each geological unit. Gamma radiation | ||
| such as where there is coarse gold that has inherent sampling | is measured from a volume surrounding the drill hole that has a | ||
| problems. Unusual commodities or mineralisation types (eg | radius of approximately 35cm. The gamma probe therefore samples a | ||
| submarine nodules) may warrant disclosure of detailed information. | much larger volume than RC drill spoil or drill core samples recovered | ||
| from a drill hole of normal diameter. | |||
| | Estimates of uranium concentrations based on gamma ray | ||
| measurements are based on the commonly accepted initial | |||
| assumption that the uranium is in secular equilibrium with its daughter | |||
| products (radionuclides), which are the principal gamma ray emitters | |||
| along the U-series decay chain. If uranium is in disequilibrium as a | |||
| result of the redistribution (depletion or enhancement) of uranium | |||
| relative to its daughter radionuclides, then the true uranium | |||
| concentration in the holes logged using the gamma probe will be | |||
| higher or lower than those reported in the announcement. Previous | |||
| chemical assays from Bigrlyi and surrounding deposits have generally | |||
| confirmed the gamma intersections and as such Energy Metals | |||
| believes that the uranium in the system is in equilibrium with its | |||
| daughter products. | |||
| | Routine chemical assays were carried out on ca.3 kg size, metre- | ||
| sample RC drill spoils split from the cyclone over mineralised | |||
| intervals. Sampling was undertaken using industry standard QAQC | |||
| practices. Chemical assays for uranium were obtained by pressed | |||
| powder pellet XRF (<1% U) or lithium borate fusion disc XRF for | |||
| cases where U >=1% (see below for further details). |
10
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Drilling | Drill type (eg core, reverse circulation, open-hole hammer, rotary air | The drill type was reverse circulation (RC) drilling with a bit diameter |
| techniques | blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple | of 140mm. No diamond core drilling has been undertaken at Bigwest |
| or standard tube, depth of diamond tails, face-sampling bit or other | or Autobahn. | |
| _type, whether core is oriented and if so, by what method, etc). _ | ||
| Drill sample | Method of recording and assessing core and chip sample recoveries | Assessment of RC drill spoil recovery was made as a visual estimate |
| recovery | and results assessed. | (percent recovery) and this information was entered into the |
| Measures taken to maximise sample recovery and ensure | company’s database; except in some deeply weathered, water- | |
| representative nature of the samples. | saturated zones (generally located outside mineralized intervals) | |
| Whether a relationship exists between sample recovery and grade | estimated sample recoveries were high (>90%). The drilling | |
| and whether sample bias may have occurred due to preferential | company’s practice was to use appropriate drilling techniques to | |
| loss/gain of fine/coarse material. | maximize sample recovery. No relationship has been identified | |
| between sample recovery and grade of mineralization. | ||
| Logging | Whether core and chip samples have been geologically and | All RC drill chip samples were geologically logged with information on |
| geotechnically logged to a level of detail to support appropriate | lithology, colour, grain-size, stratigraphic unit, oxidation state, | |
| Mineral Resource estimation, mining studies and metallurgical | alteration, cementation, weathering and other features recorded | |
| studies. | digitally. All coded data was verified according to Energy Metals | |
| Whether logging is qualitative or quantitative in nature. Core (or | standard logging look-up tables. Chip trays were archived at the | |
| costean, channel, etc) photography. | Bigrlyi camp sample storage facility | |
| The total length andpercentage of the relevant intersections logged. |
11
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Sub- | If core, whether cut or sawn and whether quarter, half or all core | RC drill spoils were sampled off the cyclone via a cone splitter to yield |
| sampling | taken. | two ca.3-5 kg sub-samples (primary assay and duplicate sample) and |
| techniques and sample preparation |
If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. For all sample types, the nature, quality and appropriateness of the sample preparation technique. |
ca.40kg of bulk material which was collected in a large bag. The bulk material was sampled by random spearing and/or riffle splitting to provide additional samples for check assay. Field QC procedures involved the insertion of a set of QC samples |
| Quality control procedures adopted for all sub-sampling stages to | comprising a field standard, a blank and a duplicate at the approx. | |
| maximise representivity of samples. | frequency of 1 QC set per 25 samples. | |
| Measures taken to ensure that the sampling is representative of the in | Sample preparation of RC drill spoils involved riffle splitting the |
|
| situ material collected, including for instance results for field | sample to a maximum sub-sample size of 3kg; this was followed by | |
| duplicate/second-half sampling. | pulverization in a low-Cr steel ring mill so that 85% passed 75 | |
| Whether sample sizes are appropriate to the grain size of the material | microns grain size. The unpulverised remainder was bagged and |
|
| being sampled. | retained. | |
| Sub-sample sizes of 3-5 kg are considered to be appropriate for the | ||
| style of mineralization found here (tabular sandstone-hosted uranium) | ||
| taking into consideration the nature and mineralogy of mineralized | ||
| intersections containing >100ppm U3O8. | ||
| Quality of | The nature, quality and appropriateness of the assaying and | Uranium was assayed by XRF using the pressed powder pellet (PPP- |
| assay data | laboratory procedures used and whether the technique is considered | XRF) method for samples containing <1% U. This method gives total |
| and | partial or total. | uranium content and is accurate for low strontium matrices as found |
| laboratory tests |
For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their |
at Bigrlyi and surrounding deposits. In addition to normal laboratory QC procedures, two certified reference materials with chemical matrices matching the sandstone-deposit-style were run as laboratory |
| derivation, etc. | standards at a frequency of approx. 1 standard per 25 samples for | |
| Nature of quality control procedures adopted (eg standards, blanks, | the PPP-XRF assay work. At levels equal to or above 1% U (i.e. | |
| duplicates, external laboratory checks) and whether acceptable levels | beyond the calibration limit of the PPP-XRF method), uranium was |
|
| of accuracy (ie lack of bias) and precision have been established. | assayed by oxidizing lithium borate fusion disc XRF, the oxidizing | |
| lithium borate fusion provides complete dissolution of the rock matrix. | ||
| The gamma tools used for downhole gamma ray measurements were | ||
| calibrated in Adelaide at the SA Department of Water in calibration | ||
| pits constructed under the supervision of the CSIRO; the tools are | ||
| recalibrated annually. Energy Metals runs regular checks to ensure | ||
| the accuracy and reproducibility of probe data on site by daily | ||
| measurements of a standard radioactive source and byfortnightly |
12
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| measurements down a standard test hole. The raw gamma ray data | ||
| was converted from counts per second to equivalent U3O8values | ||
| (eU3O8in ppm) using the probe calibration factors determined in | ||
| Adelaide together with an attenuation factor, determined onsite, due | ||
| to drill rod characteristics. Additional factors take into account | ||
| differences in drill-hole size and drill-hole water levels. The eU3O8 | ||
| data is filtered (deconvolved) to more closely reproduce true grades | ||
| and thicknesses, essential where narrow mineralised zones are | ||
| encountered. The various calibration factors, deconvolution | ||
| parameters and eU3O8determinations were compiled and/or | ||
| calculated by David Wilson BSc MSc MAusIMM from 3D Exploration | ||
| Pty Ltd based in Perth, Western Australia. | ||
| Verification | The verification of significant intersections by either independent or | Significant uranium intersections were verified on site by specialist |
| of sampling | alternative company personnel. | geological personnel from the Uranium Resources Company (URC), |
| and | The use of twinned holes. | Beijing, China; URC is the technical arm of the China General |
| assaying | Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. |
Nuclear Power Corporation (CGNPC), the major shareholder of Energy Metals Ltd. |
| Discuss any adjustment to assay data. | No holes were twinned at Bigwest or Autobahn. | |
| Primary data was collected in the field into a Micromine Field Marshal | ||
| template operating on a toughbook computer. The information was | ||
| validated by import into Micromine and then dispatched to Perth office | ||
| for compilation into an SQL database. | ||
| No adjustments to assay data as reported by the laboratory were | ||
| made. | ||
| Location of | Accuracy and quality of surveys used to locate drill holes (collar and | Coordinates are located on the MGA94 grid, Zone 52 using the |
| data points | down-hole surveys), trenches, mine workings and other locations | GDA94 datum. |
| used in Mineral Resource estimation. | Hole collar locations for the 2013 drilling are based on hand-held | |
| Specification of the grid system used. | GPS measurements (accuracy +/- 4m in the horizontal plane). | |
| Quality and adequacy of topographic control. | In the vertical plane, topographic control at Bigwest was provided by | |
| a high resolution digital elevation model (DTM) determined by SGM | ||
| photogrammetric methods and based on a 2011 airborne digital line | ||
| sensor (ADS) survey. At Autobahn no DTM is currently available and | ||
| a nominal elevation of 645m was assigned. A planned DGPS collar | ||
| survey will provide accurate coordinates later in 2014. | ||
| Down-hole surveys were undertaken with a single-shot tool (Reflex | ||
| EZ-Shot or Globaltech) every 30m and at EOH depth. QC involved | ||
| field checks using a test stand. Initial collar orientations were aligned | ||
| by compass and goniometer. |
13
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Data | Data spacing for reporting of Exploration Results. | The Bigwest target was drilled on lines with a nominal 50m spacing |
| spacing and | Whether the data spacing and distribution is sufficient to establish the | (eastings). |
| distribution | degree of geological and grade continuity appropriate for the Mineral | Energy Metals consider the spacing sufficient to establish continuity |
| Resource and Ore Reserve estimation procedure(s) and | of geology and grade for the purposes of estimation of an inferred | |
| classifications applied. | mineral resource. | |
| Whether sample compositing has been applied. | Downhole gamma logs measured at 5cm spacing have been | |
| composited to 0.5m and 1m intervals. Samples for geochemical | ||
| assay were not composited. | ||
| Orientation | Whether the orientation of sampling achieves unbiased sampling of | Several investigations have shown that Bigrlyi style (tabular stratiform |
| of data in | possible structures and the extent to which this is known, considering | sandstone-hosted) uranium mineralization exhibits no significant |
| relation to | the deposit type. | structural control. Mineralisation is controlled by physical and |
| geological structure |
If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. |
chemical characteristics of the host rock such as permeability and redox state and is influenced by primary depositional and sedimentological features. |
| Drilling has mostly been conducted perpendicular to bedding planes | ||
| that host the mineralized zones and no bias of sampling related to | ||
| orientation of these zones has been identified. | ||
| Sample | The measures taken to ensure sample security. | The chain of custody of samples including dispatch and tracking is |
| security | managed by Energy Metals staff. Samples are stored in a fenced | |
| yard at site prior to transport to the assay laboratory by Energy Metals | ||
| personnel or by contractors Alice Springs Bush Haulage and Mining | ||
| Services. Sample pulps are returned to site for storage and archive | ||
| on completion of assay work. | ||
| Audits or | The results of any audits or reviews of sampling techniques and data. | Downhole gamma probe logging procedures were reviewed and |
| reviews | updated in 2012 with the assistance of David Wilson (3D Exploration | |
| Pty Ltd) and geophysical personnel from Paladin Energy Ltd. | ||
| Geochemical sampling procedures were reviewed in 2013 with tests | ||
| conducted to ensure optimal sampling methods were in place. | ||
| Improvements to Energy Metals data management procedures were | ||
| made in 2012; Energy Metals considers its current exploration | ||
| database is of sufficient quality to carry out resource estimation work. |
14
Section 2 Reporting of Exploration Results
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| Mineral | Type, reference name/number, location and ownership including | The Bigwest and Autobahn targets are located on Exploration |
| tenement | agreements or material issues with third parties such as joint | Licences EL24453 and EL24533, respectively, which are 100% |
| and land | ventures, partnerships, overriding royalties, native title interests, | owned and operated by Energy Metals Ltd. |
| tenure | historical sites, wilderness or national park and environmental | The exploration licences are located within the Mt Doreen Perpetual |
| status | settings. The security of the tenure held at the time of reporting along with any |
Pastoral Lease Native Title Claim (NTD39/2011) which was determined by consent on 3/7/2013. |
| known impediments to obtaining a licence to operate in the area. | The exploration licences are held in good standing with no known | |
| impediments. | ||
| Exploration | Acknowledgment and appraisal of exploration by other parties. | No other company exploration drilling has previously been conducted |
| done by | at the Bigwest prospect. Several percussion holes, without significant | |
| other parties | result, were previously drilled at Autobahn by Central Pacific Minerals NL in 1975. |
|
| Geology | Deposit type, geological setting and style of mineralisation. | Bigrlyi and associated satellite deposits are tabular, stratiform, |
| sandstone-hosted uranium-vanadium deposits of Carboniferous age | ||
| located on the northern margin of the Ngalia Basin (NT). | ||
| Drill hole | A summary of all information material to the understanding of the | Refer to Annexure 1 in the body of the text. |
| Information | exploration results including a tabulation of the following information | |
| for all Material drill holes: | ||
o easting and northing of the drill hole collar |
||
o elevation or RL (Reduced Level – elevation above sea level in |
||
| metres) of the drill hole collar | ||
o dip and azimuth of the hole |
||
o down hole length and interception depth |
||
o hole length. |
||
| If the exclusion of this information is justified on the basis that the | ||
| information is not Material and this exclusion does not detract from | ||
| the understanding of the report, the Competent Person should clearly | ||
| explain why this is the case. | ||
| Data | In reporting Exploration Results, weighting averaging techniques, | Exploration results, i.e. mineralized intercepts, are reported as either |
| aggregation | maximum and/or minimum grade truncations (eg cutting of high | equivalent U3O8values (eU3O8) from processed gamma logs or as |
| methods | grades) and cut-off grades are usually Material and should be stated. | chemical assay U3O8values in parts per million (ppm) by weight. |
| Where aggregate intercepts incorporate short lengths of high grade | Gamma log intersections have been composited from 5cm | |
| results and longer lengths of lowgrade results, theprocedure used | deconvolved eU3O8values. AssayU3O8values have been |
15
| Criteria | JORC Code explanation | Commentary |
|---|---|---|
| for such aggregation should be stated and some typical examples of | determined from metre samples of RC drill spoils. A cut-off of 100ppm | |
| such aggregations should be shown in detail. | U3O8has been used with a minimum thickness of 1m and a maximum | |
| The assumptions used for any reporting of metal equivalent values | internal dilution of 3m and no external dilution. All reported_including_ | |
| should be clearly stated. | _(inc.)_intersections are determined using a 500ppm U3O8cut-off with | |
| a minimum thickness of 1m and a maximum internal dilution of 3m | ||
| and no external dilution. Because of the larger sampling width and | ||
| differences in sampling volumes, chemical assay results may not | ||
| exactly match the processed gamma log eU3O8values. | ||
| Relationship | These relationships are particularly important in the reporting of | Based on geological mapping and structural measurements of drill |
| between | Exploration Results. | core, beds have been upturned and are steeply dipping, typically at |
| mineralisation | If the geometry of the mineralisation with respect to the drill hole |
70 to 80 degrees. Most holes have been drilled at -60 degrees |
| widths and | angle is known, its nature should be reported. | perpendicular to bedding planes and true widths of intersections are |
| intercept lengths |
If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (eg ‘down hole length, true _width not known’). _ |
estimated to be 75% to 80% of the reported downhole widths. |
| Diagrams | Appropriate maps and sections (with scales) and tabulations of | Refer to figures in the body of the text. |
| intercepts should be included for any significant discovery being | ||
| reported These should include, but not be limited to a plan view of | ||
| drill hole collar locations and appropriate sectional views. | ||
| Balanced | Where comprehensive reporting of all Exploration Results is not | All significant results as defined above have been reported. |
| reporting | practicable, representative reporting of both low and high grades | |
| and/or widths should be practiced to avoid misleading reporting of | ||
| Exploration Results. | ||
| Other | Other exploration data, if meaningful and material, should be reported | Vanadium is routinely assayed together with uranium, however, the |
| substantive | including (but not limited to): geological observations; geophysical | recovery of vanadium is not considered to be an economic |
| exploration data |
survey results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, |
proposition at present nor is it likely to be in the near future. |
| groundwater, geotechnical and rock characteristics; potential | ||
| deleterious or contaminating substances. | ||
| Further work | The nature and scale of planned further work (eg tests for lateral | Some core drilling is planned at Bigwest and further exploration |
| extensions or depth extensions or large-scale step-out drilling). | drilling is planned at Autobahn in the 2014 season. | |
| Diagrams clearly highlighting the areas of possible extensions, | ||
| including the main geological interpretations and future drilling areas, | ||
| provided this information is not commercially sensitive. |
16