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METALS AUSTRALIA LTD — Capital/Financing Update 2015
Apr 6, 2015
65344_rns_2015-04-06_ce7c3964-2f10-4db3-9dee-d3668f1f8ba0.pdf
Capital/Financing Update
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A S X A N N O U N C E M E N T 0 7 A p r i l 2 0 1 5
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NEW M ANINDI Z INC DEP O SIT EX P LOR A TIO N TA R GET S
HI G HLIGH T S
New 3D geological interpretations and detailed exploration targeting has identified at least nine new very high priority exploration targets
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The new targets provide the potential to greatly increase the Manindi mineral resource and improve project economics
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3D VTEM and FLTEM modelling combined with 3D magnetic inversion modelling has provided a new level of sophistication in exploration targeting
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LME zinc stockpiles have fallen by over 25% since 1 January 2015 and continue to fall
EXPLORATION TARGETS
A d e tailed expl o ration targ e ting exercis e was com p leted to co m plement t h e JORC 2012 mineral res o urce estimate at Manin d i. The aim was to iden t ify robust e x ploration ta r gets with t h e potential to host significant tonnages of addition a l mineralisa t ion and im p rove the ec o nomics of t he project. Any increase in t he mineral r esource estimate will improve the project econo m ics at Manindi.
So m e time ago, the Compa n y flew a VT E M[1] survey o ver the Ma n indi project. The surve y confirmed existing anomal i es from historic MLTE M 2, FLTEM3 a nd DHTEM [4] surveys a n d the EM[5] r e sponse of the existing deposits, as well as identif y ing several new untested anomalie s . The mineralisation at Ma n indi consis t s of massi v e sulphide s with very high pyrrh o tite content. Pyrrhotit e is highly con d uctive, m a king TEM [6] a partic u larly effe c tive targeting technique for M a nindi-style min e ralisation.
All EM data, historic and new, were reprocesse d and mod e lled using modern 3D modelling soft w are. The r esultant 3D models we r e combine d with existi n g aeromag n etic, geoch e mical and geo l ogical data s ets to generate and ran k exploration targets in o r der of priori t y (Figure 1) .
3D inversion m o delling[7] of the aeroma g netic data s et was particularly use f ul in rankin g the TEM con d uctors. Th e mineralisa t ion at Mani n di is locate d on the wes t ern side of a deep-root e d, strongly ma g netic body. TEM conductors locat e d in simila r positions either along s trike from M anindi, or ass o ciated with other simila r magnetic b o dies receiv e d higher ra n kings (Figu r e 2).
Drilling at the current Manin d i mineral re s ource has i d entified four mineralise d positions, a ll of which are open in at l e ast one dire c tion. Most importantly, drilling at th e current mi n eral resour c e has only test e d the min e ralisation t o a maximu m depth of 300m belo w surface. Recent EM modelling indi c ates that t h e conducti v e bodies e x tend much deeper tha n this, partic u larly bene a th Kowari,
Metals A ustralia Ltd (ABN 38 008 9 8 2 474) www.metals a ustralia.com. a 1[st] Flo o r, 8 Parliament P lace, West Perth, WA 6005 ▪ PO B ox 1618, West Perth, WA 6872 ▪ t : +61 8 9481 78 3 3 ▪ f: +61 9481 7 8 35 ▪ e: mls@me t alsaustralia.com. a
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Kult a rr and Nu m bat where t he 2012 FL T EM model s extend to o ver 500m b elow surfa c e, and are ope n at depth. T hese are re f erred to as “ resource extension” tar g ets.
In a d dition to th e resource extension tar g ets, a num b er of other h igh priority t argets such as Kaluta, Dib b ler and Bru s htail (see points 1, 4 a n d 5 below) h ave not yet been drill t e sted (Figur e 1). These are referred t o as “gree n fields” targets. Shoul d any of t h ese high-quality targets contain min e ralisation, t hey would substantiall y increase the Manin d i mineral r e source es t imate and ther e fore impro v e project ec o nomics.
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Figure 1 - Manindi VT E M imagery and t a rget map showing highest priority targets in red pol y gons, other targeets in beige polyg o ns, conductive trends in pink lin e s and areas of c o nductive overbu r den in grey hatchhing
The high priorit y targets in o r der of ranki n g (with the highest ranking on top) a re as follow s :
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Kaluta ( g reenfields)
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Kultarr D eeps and K ultarr North (resource e x tension)
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Kowari D eeps (reso u rce extensi o n)
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Dibbler ( greenfields)
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Brushta i l (greenfields)
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Ningbin g (greenfields) 7. Monjon (greenfields )
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Figure 2 - 3D o blique view sho w ing 3D magnetic inversion models in green with mineralisation wirefraames in black and FLTEM con d uctor models in y e llow. Note the f a vourable positio n s of the highest p riority EM conducctor models.
Descriptions an d proposed follow-up pr o grams for t h e highest priority explor a tion targets in order of prio r ity are as follows:
1. Kaluta
This tar g et was ide n tified by th e 2012 VTE M survey, and refined b y flow-up FL T EM in the same y e ar. Kaluta i s a relatively large untes t ed highly conductive bo d y. The 3D model is at least 7 0 m by 600m in surface a rea. Poten t ial thicknes s is unknow n at this sta g e, but the tonnag e potential i s significant . The targ e t starts at just 30m b e low surfac e , where it resolve s into sever a l discrete b o dies then p lunges shallowly, at ap p roximately 2 5 degrees at an a z imuth of 29 0 degrees. It is located c lose to the Wombat Cu - Ni soil ano m aly and is coincid e nt with a deep-rooted m agnetic b o dy compar a ble to the s etting of t h e Manindi mineralisation.
The Kaluta EM ano m aly was fir s t identified b y Western M ining Corp o ration (WM C ) in 1974. Drill tes t ing was att e mpted, but m odern TE M surveying a nd 3D pro c essing hav e confirmed that the conductor w as not effec t ively drill te s ted at the ti m e.
Follow- u p will invo l ve diamon d drill testi n g followed by DHTE M surveying. DHTEM surveyi n g will be u s ed to dete r mine whet h er or not t h e conduct o r has been effectively intersec t ed, to refin e the 3D co n ductor mod e ls, and to p r ovide a vec t or for futur e phases of drilling. Future p hases of d rilling would depend on the di s covery of significant mineralisation.
Kaluta i s the highest ranked tar g et becaus e it is highly c onductive, it is potenti a lly large in size, it is coincident with a stro n gly magne t ic body with a similar g e ological se t ting to the existing Manindi mi n eral resour c e, and it is c ompletely u n tested by d r illing.
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Figure 3 - Cr o ss section of the Kaluta TEM cond u ctor model sho w ing the 1974 WMC holes which didd not intersect the target
- Kultarr D eeps and K ultarr North
Various phases of TEM surve y ing dating b ack as far as the 197 0 s have id e ntified this highly c o nductive z o ne, which h o sts the Kult a rr mineralisation. The 2 012 VTEM s urvey and follow-u p FLTEM s u rveying sh o wed that t h is zone extends to at l east 1,000 m vertically below s u rface. The deepest dril l ing only tes t s to a maxi m um of 300 m vertical fro m surface.
Given its location d i rectly belo w and along strike from t he Kultarr m ineralisatio n , which is also hig h ly conducti v e, this is a v ery high pri o rity drill tar g et.
Follow- u p will invol v e a progra m of deepe r drilling foll o wed by D H TEM surveying. The DHTEM surveying w ill be used to map out the sulphid e mineralisat i on in detail and target future drilling. This t arget alone has the potential to gr e atly increa s e the Mani n di mineral resourc e .
- Kowari D eeps
This target is simil a r to Kultarr Deeps but ranks lower because t h e Kowari a n d Numbat mineralisation are b o th of a low e r grade th a n Kultarr. H owever, giv e n the generally highly segreg a ted and zo n ed nature o f VMS styl e mineralisation, there is a good chance this conductor represents higher grade zinc and/or copper mineralisation. The highest grade copper intersected by drilling in the Manindi area, up to 1.27% Cu, occurs at the Kowari prospect.
Follow- u p will invol v e a progra m of drilling followed by DHTEM s u rveying. T h e DHTEM surveyi n g will be u s ed to map out the sul p hide miner a lisation in d etail and t a rget future drilling.
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Fi g ure 4 - Long Se c tion of Kowari an d Kultarr showing the high priority t a rget areas. Newexco 2007 DHTEM models are in g reen, 2002
surface E M models are in y e llow, 2012 FLTE M models are in l i ght brown and dr i llhole pierce pointts are in black do t s.
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- Dibbler
This T E M conduct o r is locate d 300m eas t of Kowari, coincident w ith a mag n etic trend similar t o, and parallel to the Manindi trend. It may re p resent a n e w mineralised horizon lower d own in th e volcanic sequence to the main Manindi position, o r possibly mineralisation remobilised into t he footwall gabbro. T h is would b e expected in a typical VMS ta r get model. A lthough thi s conductor i s relatively s mall at its t o p, it may re p resent the top of s o mething lar g er, which d e velops at d e pth.
Dibbler was identifi e d by histor i c EM surveys. A shall o w percussi o n hole wa s drilled by Esso E x ploration and Productio n Australia I N C (Esso) in 1984 over t he conduct o r. Modern 3D mo d elling indic a tes that th e hole faile d to intersect the con d uctor. The hole was termina t ed at 39m i n +300ppm copper. Th e Manindi d e posits are t ypically sur r ounded by an alter a tion halo c o ntaining +2 5 0ppm copp e r, so this is a very positi v e sign for D ibbler.
Follow- u p will invol v e drilling o ne hole to intersect the conducto r followed b y DHTEM surveyi n g. If significant miner a lisation is i n tersected, a second p h ase of drilling will be carried o ut.
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Figu r e 5 - Cross secti o n of the Dibbler T EM 3D model, l o oking North Wes t , showing the hol e drilled by Esso i n 1984, which fai l ed to intersect the target, EM models in gr e en, magnetic inv e rsion models in b lue and minerali s ation in red. Notee the Dibbler position on the 3D magnetic i n version models i n comparison to t h e Kowari-Numb a t mineralised possition on the left
- Brushta i l
Identified by the 2012 VTEM su r vey and refi n ed by follo w -up FLTEM in the sam e year. This conductor is coincid e nt with a st r ongly mag n etic trend si m ilar to the M anindi trend, the area is unde r cover and c o mpletely u n explored, a n d may repr e sent a min e ralised pos i tion higher up in th e volcanic s e quence to M anindi.
Althoug h the condu c tor appears to be relati v ely small at its top, it co u ld represent the top of something larger d e veloping at depth, particularly give n the coinci d ence with a magnetic body. O nly drilling a nd DHTEM surveying c a n determin e this. The fact that this area has ne v er been explored for M anindi styl e mineralisa t ion makes Brushta i l a very hig h priority target. Follow- u p will involv e drilling of o ne or two d i amond hole s followed b y DHTEM s u rveying. If mineralisation is en c ountered, f u rther drilling and DHTE M surveying m ay be proposed.
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F igure 6 - Cross section of Brushtail showing the 20 1 2 FLTEM 3D mo d els in green and the 3D magnetic inversion model i n blue
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6. Ningbin g
This E M conductor is located on the Ma n indi magne t ic trend in a similar s t ratigraphic position to the Ma n indi deposi t s. The 2 0 12 VTEM s urvey ident i fied the an o maly and FLTEM surveying r efined it in the same y ear. Historic EM had already id e ntified the anomal y but moder n 3D modelli n g indicates that drilling f ailed to effe c tively test it.
WMC drilled a single hole over the conductor in 1974 but missed it by about 60m. A second hole was d r illed by Plu t onic Reso u rces in 199 7 ; this hole was very c l ose to the conductor, but was drilled at a l o w angle to it and failed to effectively test it. T h e Plutonic hole intersected a broad zone of +250ppm copper which typically surrounds the Manindi deposits. This is a po s itive sign for Ningbing.
Althoug h not particularly large i n size at 200m by 50m i n extent, this conductor i s only 80m from surface and has the potential to add a significa n t tonnage t o the Mani n di mineral resourc e . For com p arison Wa r rabi measu r es approxi m ately 150m by 65m by 10m thick and contains appro x imately 152 , 000t (14%) o f the JORC 2012 miner a l resource e stimate.
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Fig u re 7 - Cross section of the Ningbin g TEM anomaly. The 2002 3D conductor model is edge on in the for e ground in darker green and the 2012 FLT E M model is locat e d oblique to sec t ion at the back in lighter green. The WMC hole fromm 1974 is in black on the left and the Plutoni c Resources hole f rom 1997 is in g r ey on the right. N either hole effectively intersected eeither conductor m odel. Note the associ at ion with the mag n etic inversion m o del in blue.
- Monjon
This E M conductor is similar in style, strati g raphic position and hi s tory to Nin g bing. The 2012 V T EM and FLTEM surv e ys identifie d and refin e d the targ e t. The an o maly was identifie d and targeted from hi s toric EM s u rveys but m odern 3D modelling i n dices that drilling w as ineffecti v e at the tim e .
Plutoni c drilled two h oles here i n 1997. Drill h ole orientation and posi t ioning was n ot optimal and the conductor w as not effe c tively teste d . Narrow zones of we a kly anomal o us copper up to 4 8 0ppm were intersected b y the drillin g .
Follow- u p will invol v e the drillin g of a singl e hole to int e rsect the c o nductor at t he correct orientation followed by DHTEM surveying. If significa n t mineralis at ion is inter s ected and DHTEM provides a vector to m o re conductive material, a second p hase of drilling will be carried o ut.
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Fig u re 8 - Cross section through the M o njon TEM cond u ctor shown in green, with the histo r ic drilling that faileed to intersect it i n grey and the
3D magnetic inversion model in blue
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- Other t a rgets
There a re several o ther lower r anking targ e ts at Mani n di with the potential to add to the mineral resource. These includ e :
Mulgar a /Warabi: Resource ex t ension opp o rtunities. P re 2002 E M models e x tend to at least 150m below d e epest drillin g at Warabi.
Ningaui / Bandicoot: Large EM c o nductor, o n ly partially t e sted by dril l ing. This target needs more s y stematic drilling on an o p timised gri d direction.
Ampurt a : Medium t o large EM c onductor o n ly partially tested by dri l ling. Historic drilling is not sys t ematic and copper gra d es reach u p to 0.8% in places. T h is target ne e ds further system a tic drilling.
Dunnar t : Small unt e sted EM c o nductor on the Manindi magnetic t r end. The a nomaly is located beneath co n ductive ove r burden so it could be larger than E M modelling i n dicates. Bilby: S m all EM conductor inter s ected near i ts edge at a low angle b y a single d r illhole. No signific a nt mineralis a tion interse c ted, but an o malous copper up to 486ppm in the drillhole.
Glossar y of geologi c al/geophysi c al terms:
VTEM[1] : Versatile Transient ( t ime domain) Ele c tromagnetics, a m odern airborne E M technique. MLTEM[2] : M oving Loop Tran s ient Electromag n etics, a ground EM technique. FLTEM[3] : F i xed Loop Transi e nt Electromagne t ics, a ground EM technique. DHTEM[4] : D own Hole Transi e nt Electromagne t ics, a technique u sing a downhole electromagnetic pprobe. EM[5] : Elect r omagnetics, an e lectrical explorat i on technique ba s ed on the meas u rement of alternaating magnetic fi e lds associated with curren t s induced in the s ub surface. TEM[6] : Transient Electromag n etics, a generali s ed term. 3D inversion modelling[7] : A modern techniqu e of magnetic data processing and interpretation. Pyrrhotite: An iron sulphide mineral.
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Fi g ure 9 - Long sec t ion of Warabi an d Mulgara showin g areas for poten t ial resource exte n sions and the Pree 2002 TEM conductor target.
Drillhol e pierce points ar e shown in black d ots. Note some h oles appear mor e than once as theey intersect multi p le discrete
minerali s ed horizons
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ABOUT M A NINDI Z INC-CO PPER PR O JECT, W ESTER N AUSTR A LIA
Met a ls Australia holds an in t erest in two base metal s projects in W estern Aust r alia (Figure 10).
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The Manindi zi n c-copper project is located aroun d 500 km northeast of Perth, and is b eing explo r ed by Metals with a vie w to ultimately developin g a zinc min e
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The Manindi P r oject is loc a ted in the M urchison D istrict of We s tern Austra l ia, 20 km s o uthwest of t he defunct Youanmi gol d mine. The project is located on three granted mining lice n ces and co n tains a high grade zinc d eposit.
. Figure 10 - L o cation of the We s tern Australian b a se metals projects projects
Ma n indi is considered to be a volcanog e nic massive sulphide metals projects projects (V M S) deposit, comprisin g a series of lenses of zincdo m inated min e ralisation t h at have b e en folded, sheared, faul t ed, and po s sibly intrud e d by later dolerite and g abbro. The style of mi n eralisation i s similar to oth e r base met a l sulphide deposits in the Yilgarn C r aton, partic u larly Golde n Grove nea r Yalgoo to the w est of Man i ndi, and Te u tonic Bore- J aguar in th e Eastern G o ldfields.
Sin c e the depo s its were discovered, a c omprehensive body of w ork has be e n generate d , including geo c hemistry, g eophysics, detailed ge o logical ma p ping, extensive drilling , wireframe modelling, res o urce modelling and met a llurgical test work.
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For further information please contact: Lu k e Marshall Or consult our website: w w w.metalsa u stralia.com. a u
+61 8 9 481 7833
Competent Person Declaration
The i n formation in thi s release relating to the geology a nd exploration r e sults of the projects owned by MMetals Australia L td is based on infor m ation compiled b y Luke Marshall, w ho is a full time e mployee of Golden Deeps Limite d and a consultantt to Metals Australia. Mr Marshall is a m ember of The A ustralian Institut e of Geoscientist s , a Recognised P rofessional Org a nisation by the AAustralasian Join t Ore Reserves Com m ittee, and has s u fficient experien c e relevant to the style of minerali s ation and types o f deposits under consideration and to the activity which is being undert a ken to qualify as a Competent P e rson as defined in the 2012 editi o n of the Joint Orre Reserves Co m mittee (JORC) Austr a lasian Code for Reporting of Ex p loration Results. Mr Marshall co n sents to the inclusion in this repoort of the matter s based on his infor m ation in the form and context in w h ich it appears.
Forward-Looking Statements
This d ocument may include forward-lo o king statements. Forward-looking statements inclu d e, but are not limmited to, statem e nts concerning Metal s Australia Ltd’s planned exploration programme a n d other statem e nts that are not h istorical facts. WWhen used in this document, the word s such as "coul d ," "plan," "estim a te," "expect," "i n tend," "may”, " p otential," "shoul d ," and similar eexpressions are forward-looking state m ents. Although M etals Australia L td believes that i ts expectations r e flected in these forward-looking sstatements are reasonable, such state m ents involve ris k s and uncertaint i es and no assur a nce can be giv e n that actual results will be consiistent with these forward-looking state m ents.
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