Impact Minerals’ Drilling Continues to Grow Silica Hill Mineralisation

INSIDE UPDATE: Impact Minerals (ASX: IPT) has been on a drilling frenzy at the company’s emerging gold-silver discovery at the Silica Hill prospect, 100 kilometres north of Orange in New South Wales.

Impact Minerals has received high-grade gold and exceptionally high-grade silver assays form the southern mineralised zone at the Silica Hill prospect.

The assays were returned from three diamond drill holes, indicating that the grades of gold and silver, especially the gold, are increasing with depth below surface.

“These results are an exciting further breakthrough for us at Silica Hill as they indicate the mineralised system is getting better at depth and to the east,” Impact Minerals managing director Dr Mike Jones said.

“The silver grades and minerals within the vein system we have discovered are exceptional and confirm the unique nature of this deposit in Australia.

“These are the highest assays returned so far at the project and they occur within robust zones of mineable width and grade. We are excited for the 2018 exploration programme.”

Assays from CMIPT077 returned an intercept of:
22.5 metres at 1.7 grams per tonne gold and 276g/t silver from 166.7m down hole, including 0.3m at 1.8g/t gold and 4200g/t (135 ounces or 0.42%) silver from 174.4m.

The intercept also included:
0.8m at 13.6g/t gold and 40g/t silver from 187.7m.

These results confirmed the southern mineralised zone to be a steeply dipping mineralised vein system trending east-west and open down dip and down plunge to the south east.

Continuity of gold and very high-grade silver mineralisation from surface was confirmed by the assays from the other two diamond drill holes drilled up dip of CMIPT077.

CMIPT074
21.8m at 0.6 g/t gold and 273g/t silver from 137.9m down hole, including 0.5m at 0.5g/t gold and 1,485g/t (48 ounces) silver from 143m and 0.4m at 1.6g/t gold and 6240g/t (200 ounces or 0.62%) silver from 148.5m.

CMIPT073
75.3m at 0.4g/t gold and 62g/t silver from 75m down hole, including 10.8m at 1.4g/t gold and 243g/t silver from 134m, which included 4.3m at 2g/t gold and 566g/t silver from 134m, including 0.3m at 6.9g/t gold and 1,485g/t silver from 136m.

Subsequent drilling provided new assays and allowed for detailed studies on core from the Silica Hill prospect, which further demonstrated the large scale and high-grade nature of the mineralised system in the area.

Hole CMIPT72 is the eastern most hole Impact has drilled at Silica Hill.

The hole intersected two zones of strong silica-sulphide alteration with anomalous gold and silver values over a combined thickness of more than 200 metres down hole including a high-grade gold and silver vein within the upper zone indicating potential for more veins nearby, mostly to the south.

The upper zone in Hole CMIPT72 returned:

46m at 0.04g/t gold and 5g/t silver from 200m down hole, including 0.4m at 2.5g/t gold and 327g/t silver from 257.2m (known as the narrow vein).

The lower zone returned 67m at 0.3g/t gold and 1g/t silver from 402m down hole.

Detailed studies carried out on the drill core demonstrated that the two east-west trending mineralised structures at Silica Hill become more north west-south east orientated to the east and that the Silica Hill rhyolite is more extensive at depth to the south than previously recognised.

“Following the discovery of high-grade gold and very high-grade silver veins at Silica Hill, these new results are a further breakthrough for Impact as it demonstrates the system extends over an area of at least 500 metres by 500 metres in dimension and to considerable depth,” Jones said.

“We are also recognising different units within the Silica Hill rhyolite that are an important control on the mineralisation and may also be the upper parts of a deep-rooted intrusion that could be mineralised over a significant vertical extent.”

Impact Minerals considers the results from drilling at Silica Hill continue to demonstrate the potential for bulk mining and to substantially increase the resources at the Commonwealth project, which currently stand at 720,000 tonnes at 2.8g/t gold, 48g/t silver, 1.5 per cent zinc and 0.6 per cent lead.

Large areas of this system still remain untested by drilling, however, the company believes this demonstrates there to be plenty of exploration upside in the area.

 

 

Impact Minerals Limited (ASX: IPT)
…The short story

HEAD OFFICE
26 Richardson Street
West Perth WA 6005

Ph: +61 (8) 6454 6666

Email: info@impactminerals.com.au
Web: www.impactminerals.com.au

DIRECTORS
Peter Unsworth, Dr Mike Jones, Paul Ingram, Markus Elsasser, Eamon Hannon

Gold Road Greenfield Drilling Focused on Discovery

INSIDE UPDATE: Leading into 2018, Gold Road Resources (ASX: GOR) concentrated on identifying targets for a prioritised greenfields exploration program.

As result, Gold Road will spend approximately $23 million drilling to test the highest‐ranked prospects across its 100 per cent owned Yamarna tenements and the Gruyere Project Joint Venture (Gruyere JV) with Gold Fields Limited.

Gold Road’s ‘Exploration Pipeline Model’ ranks the quality of identified targets within progressive milestone stages ‐ Milestone 1 being the earliest stage and Milestone 5 being the most advanced.

Recent drilling focused primarily on Milestone 3 targets including:

Diamond and RC drilling on the Wanderrie Supergroup Trend; and

Diamond and RC drilling at the Smokebush Camp.

Gold Road anticipates undertaking further diamond and RC testing of one of the highest‐ranked Milestone 3 targets, Ibanez, within the Corkwood Camp.

Two aircore rigs began drilling at Yamarna towards the end of March testing earlier stage (Milestone 1 and 2) targets.

Projects earmarked for aircore drilling in coming months include:

Tamerlane, a Milestone 2 target where drilling has commenced on the Yamarna Shear trend north of the Wanderrie Camp;

Kingston North within the Spearwood Camp that had drilling scheduled for mid‐April to infill and extend a gold geochemical anomaly identified at the end of 2017;

Smokebush Regional is a high-ranked Milestone 1 target, within the Smokebush Camp that has drilling scheduled for May to test the broader region north of the highly ranked Smokebush prospect;

The highest ranked Milestone 1 target is Bloodwood Camp where first pass drilling is scheduled for late May; and

The Milestone 1 Romano Camp target north of Gruyere is to undergo first pass drilling expected to commence mid‐year.

In February, Gold Road signed a Sale Agreement to acquire Sumitomo Metal Mining Oceania Pty Ltd’s 50 per cent interest in the South Yamarna project for $7 million in cash.

The transaction is expected to be concluded in May and will return Gold Road to 100 per cent ownership of the South Yamarna tenement package, which contains some of the highest ranked Camp Scale and bedrock drilling targets identified by Gold Road in the district.

Most of Gold Road’s 2018 exploration budget ($17 million) will be spent on the Yamarna tenements, where four drill rigs have commenced on a campaign designed to maximise the chances of discovering additional multi‐million-ounce gold deposits capable of supporting development of stand‐alone mining operations.

Construction of the Gruyere gold project is progressing, with project engineering and overall construction 84 per cent and 44 per cent complete respectively, and EPC construction 17 per cent complete at the end of March.

A review of the project cost estimate and schedule, the Definitive Estimate, indicated that recent above average rainfall is likely to hold up first gold being poured at the project and increase capital costs.

First gold production at Gruyere is now anticipated early in the June 2019 quarter.

The $6 million Gruyere JV exploration drilling program will focus on resource definition drilling on additional high‐margin satellite deposit to supplement the Gruyere mine schedule.

Gold Road updated the Yamarna Mineral Resource and Ore Reserve statement.

The Ore Reserve for Yamarna increased by 6.3 per cent to 97.35 million tonnes at 1.2 grams per tonne gold for 3.74 million ounces of gold.

This is associated largely with maiden reserve declarations for satellite deposits at Attila and Alaric, combined with a minor increase at Gruyere.

Following a Pre‐feasibility Study into developing Attila and Alaric as open pit mines to provide satellite feed to the Gruyere process plant, a combined Ore Reserve of 3.59 million tonnes at 1.55g/t gold for 179,000 ounces of gold was established for these deposits.

The Ore Reserve at Gruyere increased by 44,000 ounces of gold following modifications to the mine design submitted for the operational plan and now stands at 93.76 million tonnes at 1.18g/t gold for 3.56 million ounces of gold.

Gold Road added a third joint venture agreement in Western Australia’s South‐west Terrane with Cygnus Gold (ASX: CY5), comprising four tenement applications within the Yandina Shear, which is known to host gold mineralisation elsewhere in the South‐west Terrane.

The joint venture terms commence on a 75 per cent Gold Road and 25 per cent Cygnus ownership basis.

 

 

Gold Road Resources (ASX: GOR)
…The Short Story

HEAD OFFICE
Level 2
26 Colin Street
West Perth WA 6005

Ph: +61 8 9200 1600

Email: perth@goldroad.com.au
Website: www.goldroad.com.au

DIRECTORS
Tim Netscher, Ian Murray, Justin Osborne, Sharon Warburton, Brian Levet

Cassini Resources Flexes Exploration Muscle

INSIDE UPDATE: Cassini Resources (ASX: CZI) continues to progress the company’s West Musgrave nickel-copper project in Western Australia.

Cassini Resources, and its West Musgrave project Joint Venture partner, OZ Minerals are six months into a pre-feasibility study on the project that, according to schedule should be finished in around 12 months from now.

The JV partners have completed activities as part of the West Musgrave PFS where OZ Minerals is looking to proceeding to the next stage of its Farm-in and Joint Venture agreement, which enables OZ Minerals to earn 51 per cent of the project through an investment of approximately $19 million over a maximum of 18 months.

The PFS commenced in November 2017 and has proceeded to plan so far with recent activities including the re-opening and expansion of the exploration camp to accommodate the increased level of activity on site during the study.

Two diamond drill rigs are currently working double shift to produce samples for the next phase of metallurgical optimisation, while advanced test work has already begun on samples remaining from the 2017 program.

Test work will focus on potential nickel and copper recovery improvements identified during the Scoping Study.

Meanwhile, resource infill and extension drilling has recently commenced with two additional RC drill rigs now on-site.

Cassini anticipates the first results of the RC drilling are likely to be available from the beginning of June.

Surface moving loop (MLEM) and downhole electromagnetic (DHEM) surveys have also commenced at exploration targets One Tree Hill, Yappsu and Succoth with a third diamond drill rig arriving in early May to assist with exploration drilling.

Gravity and passive seismic surveys have been completed to assist targeting of water exploration drilling later in 2018 as de-risking of a reliable water supply for processing is a key outcome of the PFS.

With the West Musgrave JV with OZ Minerals ticking along nicely, Cassini has signalled its intentions to conduct exploration activities at its 100 per cent-owned exploration projects, including taking opportunities to add to the project portfolio when they become available.

This determination resulted in the company recently securing an option to acquire the Yarawindah Brook nickel-copper-cobalt project near New Norcia, in Western Australia.

The Yarawindah Brook project has had only limited nickel, copper and cobalt exploration despite sitting in a favourable regional setting, prospective geology and near-surface occurrences of nickel and copper.

Historic exploration focussed on a small platinum and palladium (PGEs) resource which Cassini considers a ‘path-finder’ anomaly for massive nickel – copper – cobalt sulphides.

Exploration for nickel and copper has been sporadic, however the most recent drilling in 2007 targeting surface EM anomalies, returned encouraging results, including 7 metres at 1.3 per cent nickel, 0.22 per cent copper, 0.06 per cent cobalt and 432ppb palladium from 74m.

No further follow-up drilling was conducted due to budget limitations of the previous operator during the exploration downturn post-GFC.

Elsewhere across its portfolio, Cassini is carrying out a high-resolution, helicopter-borne, Airborne Electromagnetic (AEM) survey at the company’s 100 per cent-owned West Arunta project in Western Australia.

Cassini completed a round of drilling at West Arunta in 2016 testing several zinc anomalous outcrops that had been identified through surface mapping and sampling.

From this drilling, Cassini considered there could be a chance the West Arunta has potential to host sedimentary zinc mineralisation, even though the zinc anomalous outcrops were interpreted at the time to be the result of hydromorphic dispersion in the regolith from a nearby primary source.

Cassini engaged independent contractor NRG to fly its trademarked Xcite system over the entire prospective horizon, striking over 35 kilometres, for a total of 1000 line-kilometres.

The survey is expected to assist with mapping the regolith profile and the definition of key prospective stratigraphic positions, as well as potentially directly identifying base metal mineralisation.

The long-term outlook for the zinc price is for it to remain strong due to current supply deficits.

Cassini ranks the West Arunta zinc project as a key exploration asset where it has a ‘first-mover’ advantage, due to minimal historic exploration in the region.

Cassini has taken West Arunta from conceptual model to proof-of-concept over the past few years and hopes to identify primary sedimentary zinc mineralisation at the project.

 

 

Cassini Resources Limited (ASX: CZI)
…The Short Story

HEAD OFFICE
10 Richardson Street
West Perth WA 6005

Phone: +61 8 6164 8900

Email: admin@cassiniresources.com.au
Web: www.cassiniresources.com.au

DIRECTORS
Mike Young, Richard Bevan, Dr Jon Hronsky, Phil Warren, Greg Miles

 

Musgrave Minerals Hits Gold at new Joshua Target

THE DRILL SERGEANT: Musgrave Minerals (ASX: MGV) made a good start to its regional aircore/reverse circulation (RC) drilling program at the company’s Cue project in the Murchison district of Western Australia.

Musgrave Minerals is drilling to test 10 new high priority gold targets at Cue project.

The company’s first drill hole into the new Joshua gold target approximately 4.7 kilometres south of the high-grade Break of Day deposit, intersected 6 metres at 3.9 grams per tonne gold from 54m down hole in a moderately weathered, sheared mafic with stringer quartz veining.

Musgrave explained the sample is a six-metre composite with one metre samples currently being collected and submitted for individual assay.

The gold mineralisation is open to the north, south and at depth and is within a 450m-long gold-in-soil, surface geochemical anomaly along the Break of Day/Lena shear corridor.

Musgrave has follow-up drilling planned at Joshua as part of the current drilling program.

“This intersection from Joshua is an excellent result from a first pass, shallow drill test and will be followed up with additional drilling,” Musgrave Minerals managing director Rob Waugh said in the company’s announcement to the Australian Securities Exchange.

“The target is open for more than 200 metres, both north and south and is on the same mineralised trend as Break of Day and Lena.

“To date, results from this regional program have been exceptional with new gold mineralisation identified at Joshua, Lena North, Break of Day North and Lake Austin North.

“The program highlights the potential of the Cue project to host further gold deposits within this very prospective and well-endowed region with good infrastructure and numerous operating gold plants.

“Drilling is continuing, and we look forward to completing the remainder of the drill program and reporting further results as they are received.”

Musgrave Minerals’ regional drilling program consists of a combination of aircore and shallow RC drill holes to identify new gold mineralisation by testing 10 new near surface targets.

The 12,000m program is approximately 90 per cent complete and is expected to continue for another two weeks, with 50 per cent of the assays received to date.

Next assays are expected in two weeks, with further assays expected through to mid-July.

 

Email: info@musgraveminerals.com.au

Website: www.musgraveminerals.com.au

 

Galena Mining Achieves High Lead Recoveries from Abra PFS

THE DRILL SERGEANT: Galena Mining (ASX: G1A) has completed Pre-Feasibility Study (PFS) metallurgical test-work at the company’s 100 per cent-owned Abra lead project in Western Australia.

Galena Mining said completion of the final locked-cycle processing stages delivered further excellent metallurgical results, confirming very high metal recoveries in a high-grade and clean lead-silver concentrate.

Results exceeded both the company’s expectations and what had been modelled in internal Scoping Study test-work.

Composite samples delivered lead concentrate grades ranging from 69 per cent to 81 per cent (averaging 74.5%) with recoveries between 94 per cent and 96 per cent (averaging 95%).

Galena indicated that the very high lead grades in concentrate achieved by the PFS will aloow the company to increase metallurgical recoveries above 96 per cent if desired while still maintaining an extremely high lead-in-concentrate product.

“This is the most comprehensive level of process metallurgy completed on Abra to date,” Galena Mining COO, and PFS manager Troy Flannery said in the company’s announcement to the Australian Securities Exchange.

“The results not only confirm but exceed positive results from previous work.

“The exceptionally high-grade and clean lead-silver concentrate achieved at very high recovery grades gives Galena great flexibility in optimising throughput and capital cost components of the PFS which is currently underway.

“These results should be viewed as having de-risked the metallurgy component of the current economic study at Abra.

“The finalisation of metallurgy work now paves the way for GR Engineering to complete their work which is already highly advanced on plant and site layout.”

 

Email: admin@galenamining.com.au

Website: www.galenamining.com.au

 

Lithium Australia Lands More German Lithium Hits

THE DRILL SERGEANT: Lithium Australia (ASX: LIT) claimed verification of cobalt-copper-lithium mineralisation from exploration fieldwork undertaken within the company’s fully owned Eichigt project in Germany.

Lithium Australia said cobalt and copper mineralisation has been encountered in the field with grades of up to 1.47 per cent for cobalt and 0.54 per cent for copper present in Eichigt field samples.

The company highlighted that lithium results from this exploration activity at the project were also elevated – critically, within weathered material – with grades of up to 0.71 per cent lithium oxide (Li2O) received.

LIT declared these results for cobalt and copper confirm polymetallic mineralisation encountered previously within the Eichigt project area, adding that deleterious elements, including arsenic and uranium are very low in concentration.

The cobalt has shown to occur in association with iron-and manganese-as part of a polymetallic gossan formed at surface above an extensive vein system. The oxides are enriched in lithium.

Lithium Australia noted this style of mineralisation has not been previously described in the region.

“The results of the first exploration campaign at Eichigt strongly supports our view that the license area we applied for was neglected during systematic exploration work carried out during the time of the GDR,” Lithium Australia managing director Adrian Griffin said in the company’s announcement to the Australian Securities Exchange.

“The combination of cobalt, lithium and copper is an indication of the genesis of the mineralised system and the strong possibility of finding source granites and greisen style mineralisation we see nearby at Sadisdorf.

“The historic diggings indicate the strike extent, albeit remaining open.

“The down-dip extensions will be evaluated after delineation of the extent of surface mineralisation.”

The company was granted the 133 square kilometre Eichigt exploration licence in January this year, adding to its existing Sadisdorf project, also in Saxony.

Lithium Australia is farming into a joint venture (JV) with German company Tin International AG.

A 2012 JORC code-compliant Inferred Mineral Resource of 25 million tonnes at 0.45 per cent Li2O (at a cut-off of 0.3 per cent Li2O) was announced for the project in December last year.

Lithium Australia has stated its objective to establish a central processing hub in Europe to support battery production for the rapidly expanding electric vehicle industry.

The company plans to use its 100 per cent- owned SiLeach process to recover lithium from its German projects, should doing so prove economically feasible.

 

Email: info@lithium-au.com

Website: www.lithium-au.com

 

Rox Resources Reports Strong Nickel Hits at Mt Fisher

THE DRILL SERGEANT: Rox Resources (ASX: RXL) reported assay results from a recently completed diamond drilling campaign at the company’s Fisher East nickel project, located 500km north of Kalgoorlie in Western Australia.

Rox Resources explained the overall aim of the diamond drill program was:

To extend the Musket and Camelwood deposits by testing strong downhole EM anomalies; and

To test a very strong one-kilometre-long EM conductor at Corktree, detected from surface, but not previously effectively drill tested.

Results received include:

MUSKET

MFED080
4.3 metres at 2 per cent nickel from 701.7m, including 0.3m of massive sulphides grading 8.1per cent nickel from 701.7m

CAMELWOOD

MFED076W1
2.4m at 2.4 per cent nickel from 718.3m, including 0.2m of massive sulphides grading 5.2 per cent nickel from 718.9m, and

MFED081
0.3m at 7.5 per cent nickel of massive sulphides from 288.8m.

“We are very pleased with the results from this Fisher East diamond drilling program,” Rox Resources managing director Ian Mulholland said in the company’s announcement to the Australian Securities Exchange.

“The result at Musket broadens the prospective area for drilling and indicates that mineralisation extends to at least 700 metres depth.

“In addition, the two drill holes at Camelwood have also indicated that the nickel sulphide system at Camelwood is more extensive than that currently contained in our existing resource.

“At Fisher East our continuing overall aim is to make a new game changing massive nickel sulphide discovery through exploration, while at the same time increasing resources at known deposits and continuing to assess development options.

“This latest drilling program has moved that goal forward, and we now know that the nickel sulphide systems at Musket and Camelwood are extensive and offer significant potential to develop a large resource base.

“Furthermore, we are encouraged by recent positive moves in the nickel price and the realisation that demand for electric vehicles and other batteries is going to put a lot of pressure on the class 1 nickel supply in the years ahead.

“Rox continues to position itself strongly by holding highly prospective nickel sulphides projects, and an extremely healthy cash balance.”

 

Email: admin@roxresources.com.au

Website: www.roxresources.com.au

 

Peel Mining Scores Further Southern Nights High-Grades

THE DRILL SERGEANT: Peel Mining (ASX: PEX) reported further positive drilling and geophysical results from the company’s 100 per cent-owned Wagga Tank/Southern Nights project, south of Cobar in western New South Wales.

Peel Mining declared the project to be rapidly emerging as one of the most significant zinc polymetallic discoveries in Australia in recent years.

The company recently received assay results it said had continued to add high-grade mineralisation to the Southern Nights mineral system.

Recent drilling has focused on testing at deeper levels at Southern Nights and in the Wagga Tank-Southern Nights corridor and was successful in intercepting the critical host stratigraphic units, with mineralisation observed in all drillholes.

Latest Southern Nights highlights include:

WTRCDD075
13.1 metres at 5.49 per cent zinc, 1.53 per cent lead, 0.39 per cent copper, 31 grams per tonne silver, 0.51g/t gold from 259.8m;

WTRCDD106
46.4m at 3.91 per cent zinc, 1.51 per cent lead, 60g/t silver, 0.17g/t gold from 227.6m, including 18.9m at 7 per cent zinc, 2.74 per cent lead, 112g/t silver, 0.35g/t gold from 227.6m;

WTRCDD108
11.9m at 3.02 per cent zinc, 1.39 per cent lead, 203g/t silver from 240m, including 7.4m at 4.88 per cent zinc, 2.08 per cent lead, 311g/t silver from 241m; and

WTRCDD122
42.45m at 1 per cent copper, 18g/t silver, 0.35g/t gold, 0.3 per cent zinc, 0.14 per cent lead from 483.55m, including 10m at 1.94 per cent copper, 30g/t silver, 0.61g/t gold, 0.14 per cent zinc, 0.13 per cent lead from 496m.

Follow-up drilling at the Fenceline prospect also encountered further mineralisation that remains open along strike and down-dip.

First-pass drilling at The Bird, located about 1.5km north of Fenceline, returned anomalous geochemistry confirming that base metal mineralisation is associated with the chargeable geophysical IP target.

Follow-up drilling at Fenceline returned:

TBRC029
8m at 6.29 per cent lead, 33g/t silver, 0.94g/t gold from 94m;

TBRC030
6m at 2.62 per cent lead, 18g/t silver, 1.76g/t gold from 97m; and

TBRC033
3m at 5.41 per cent zinc, 2.78 per cent lead, 0.25 per cent copper, 43g/t silver, 0.15g/t gold from 159m.

“A comprehensive geophysical review has recently been completed, identifying multiple targets in proximity of the Wagga Tank-Southern Nights-Fenceline prospects,” Peel Mining said in its ASXX announcement.

“Systematic drill testing of these targets is planned in the coming months.

“First-pass metallurgical testwork is also continuing.”

 

Email: info@peelmining.com.au

Website: www.peelmining.com.au

 

Alliance Resources Completes First Gundockerta South Drilling

THE DRILL SERGEANT: Alliance Resources (ASX: AGS) has completed the first phase of gold-focused aircore drilling at the company’s Gundockerta South project for gold, located 72 km east of Kalgoorlie, Western Australia.

Alliance Resources considers the project to be prospective for greenstone-hosted orogenic gold deposits.

The company completed a 66-hole aircore drilling program, totalling 3,007 metres, over the northern part of the target zone at the Gundockerta South project.

This first phase of aircore drilling was designed to test for low-level gold in regolith anomalism beneath gold in soil sample anomalism that can be used to vector towards a primary gold deposit.

All holes were drilled vertically on a 160 metre by 640 metre spaced grid and the average depth of drilling was 46m.

Four metre composite scoop samples have been submitted for gold and base metal analyses with results expected in approximately four weeks.

“The target zone overlies a flexure in the interpreted position of the Railway Fault where it truncates mafic and felsic volcanic rocks against younger Penny Dam Conglomerate,” Alliance Resources said in its ASX announcement.

“Given the size of this gold anomaly, the surface cover conditions and proximity to a flexure in a major fault truncating rocks of differing rheology contrast, this target has the potential to host primary gold mineralisation.

“Planned work includes completing aircore drilling over the southern part of the target zone in FY2019.

“Infill drilling will be dependent on the results of this first phase of drilling,”

 

Email: info@allianceresources.com.au

Website: www.allianceresources.com.au

 

Global Geoscience Unveils Rhyolite Ridge Development Plans

THE BOURSE WHISPERER: Global Geoscience (ASX: GSC) unveiled additional development plan details for the company’s 100 per cent-owned Rhyolite Ridge lithium-boron project in Nevada, USA.

Global Geoscience explained the development flowsheet is based on findings from the recently completed first phase of a Pre-Feasibility Study (PFS) and comprises three key parts:

Sulphuric acid leach to extract lithium and boron from crushed rock into a Pregnant Leach Solution (PLS).
A step similar to acid leaching commonly used in oxide copper mines;

Evaporation and concentration of the PLS followed by crystallisation of boric acid.
Using mechanical evaporators, which result in a substantial water savings, the PLS is further concentrated. The boric acid product is then further refined by flotation and recrystallisation to produce high-purity boric acid. This step is broadly similar to the process used at Rio Tinto’s Boron Mine in California; and

Further evaporation and concentration of the PLS to allow for removal of remaining impurites via precipitation and ion exchange, followed by precipitation of lithium carbonate.
This step is very similar to the process used in lithium brine operations.

Global Geoscience detailed the Rhyolite Ridge site layout, saying it has been designed with the total surface disturbance footprint of the mine and related facilities being less than one square mile (640 acres), allowing the Federal Bureau of Land Management (BLM) to consider the project for the Environmental Assessment (EA) process, which the company indicated was less time consuming than the Environmental Impact Statement (EIS) process.

The site layout includes an open pit, process plant, haul roads, overburden storage, leach residue storage and salt storage.

No evaporation ponds or tailings dams are required.

“Our PFS work to date has provided a clear path to developing Rhyolite Ridge into a major, low-cost producer of lithium and boron in an environmentally sustainable manner,” Global Geoscience managing director Bernard Rowe said in the company’s announcement to the Australian Securities Exchange.

“We are prudently progressing Rhyolite Ridge toward production and remain on track to release the PFS outcomes in Q3 2018.”

Global Geoscience said it expects to complete the necessary environmental baseline studies by the end of Q3 2018.

Once this work is complete and it has submitted the Plan of Operations to the BLM, the BLM will make the determination regarding the Environment Assessment pathway forward for permitting and approval.

 

Website: www.globalgeo.com.au