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Canada
Willa Project

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 Location:
7.5 km S from Silverton, British Columbia, Canada

  Project Contacts:
900-570 Granville St.
Vancouver
British Columbia, Canada
B.C., V6C 3P1
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  • Filings & News

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Overview

StagePreliminary Economic Assessment
Mine TypeUnderground
Commodities
  • Gold
  • Copper
  • Silver
Mining Method
  • Sub-level stoping
  • Longhole open stoping
Processing
  • Gravity separation
  • Flotation
Mine Life4 years (as of Jan 1, 2015)
Latest NewsCameo Closes Acquisition of Max Mine and Mill, Willa Property     March 6, 2019


Owners

Source:
CompanyInterestOwnership
Cameo Industries Corp. 100 % Indirect
Fortytwo Metals Inc. 100 % Direct
Cameo Cobalt Corp. has received final TSX Venture Exchange approval for the purchase of mining assets in an arm’s length transaction from MX Gold Corp.

Willa Property Purchase, Sale and Assignment Agreement dated January 11, 2019, whereby the Company has agreed to purchase from the Vendor the Willa Property in British Columbia for a purchase price of CDN$1 and the assumption of certain legacy obligations associated with the Willa Property, including a net smelter royalty, advance royalty payments, and the requirement to retransfer the property back to the original optionors if the property is not in commercial production on or prior to September 28, 2020 with the underlying mineral claims in good standing for a period of not less than three years. The Company has also agreed to grant a 50% net profit interest on gross cash income from the Willa Property to the Vendor (less all expenses incurred to produce such income).

Deposit Type

  • Porphyry
  • Epithermal
  • Breccia pipe / Stockwork
  • Volcanic hosted


Summary:

The Willa deposit is a sub-volcanic breccia hosted-type deposit (L01 – BC Mineral Deposit Profiles). This type of deposit represents a transition from porphyry copper to epithermal conditions with a blending of porphyry and epithermal characteristics. The porphyry units have intruded into the volcanic rocks and a pyrite,silica-rich mineralized stockwork breccia and closely-spaced sheeted veins with local massive to disseminated replacement zones have been imprinted on the sequence. The mineralization in these types of deposits is usually polymetallic and in the case of the Willa deposit contains significant gold, copper and silver.

Other deposit types on the Property are small in size compared to the Willa deposit and some may have been superimposed on the known mineralization. The primary focus of the historic exploration and development work on the Willa deposit is based on the sub-volcanic breccia- osted mineralization.Future exploration will continue to focus on this type of deposit.

The Elise Formation (“Elise”) of the Rossland Group, the oldest rocks on the Property, comprises about 75% of a roof pendant within the Nelson Batholith. The rocks range from volcanic siltstone and tuff to coarse breccias and flows. The metavolcanic roof pendant is cut by two felsic porphyritic intrusions. The first intrusion is a quartz latite porphyry ring-dyke and two radial dykes that have a central core of feldspar porphyry and a crosscutting breccia pipe. The second intrusion consists of two sub-parallel igneous bodies consisting of white feldspar porphyry and hornblende feldspar porphyry. A heterolithic breccia intrudes the volcanic and intrusive rocks. Lamprophyre dykes and faults crosscut and sometimes displace the older lithologies.

The significant mineralization at the Willa deposit is gold-copper-silver (MINFILE 082FNW071). Minor molybdenite-bearing quartz veins occur in the quartz latite porphyry.

The gold-copper-silver mineralization is predominantly within the heterolithic breccia unit, although mineralization has been identified in the feldspar porphyry, the quartz latite porphyry and the Elsie volcanic rocks. The mineralization is controlled by extensive silica-rich micro-fractures, faults, shears and breccias, predominantly within the heterolithic breccia unit that formed a zone of weakness for the emplacement of the mineralization.

The predominant minerals are chalcopyrite (CuFeS2), with varying amounts of pyrite (FeS2) and pyrrhotite (Fe1-xS). The sulphides tend to be encapsulated within sheets of silica. Propylitic alteration occurred during mineralization, as did zones of intense silicification and minor pyritization.

The quartz-molybdenite stockwork is weak but extensive in the quartz latite porphyry and volcanic rocks north and west of the heterolithic breccia. Molybdenite occurs within the quartz and along the quartz vein boundaries. Due to the low grade of the molybdenum and the relatively small size, no potentially economic mineralization is known.

The Au-Cu-Ag mineralization does not appear to be bound to any particular lithology; however, most of the mineralization has been observed within the breccia pipe, mostly in the heterolithic breccia but also in the feldspar porphyry. A minor amount of mineralization has been observed crossing over the pipe boundaries into the volcanic rocks. The mineralization has been observed to be somewhat bound laterally by intersecting lamprophyre dykes which may or may not be useful as an exploration tool.

Three zones of Au-Cu-Ag mineralization have been observed at the Willa deposit: The West Zone, North Zone (called the Main Zone in some historical reports), and the East Zone. Figure 7.2 illustrates the extent of drilling and observed mineralization.

The West Zone is almost entirely contained within the feldspar porphyry and heterolithic breccia units at the southwest margin within the breccia pipe. The West Zone is the largest of the three mineralized zones and most extensively explored. The zone strikes to the northwest, with the northwestern most tip trending north, following the boundary of the breccia pipe. The overall strike length is 200 m and mostly occurs within a vertical extent of 100 m. The zone is approximately 100 m wide and dips to the northeast.

The West Zone has been exposed on the 1025 Level (1000 Crosscut, 950 South Drift, 950 North Drift, 950 Crosscut and the 1025 Raise) that runs parallel to and within the mineralization at approximately midway through the vertical extent of the zone. It has been documented that the mineralized zone is cut off to the north by the Willa Fault and has been displaced to the south by crosscutting faults.

Drillhole data seem to indicate that mineralization continues beyond these faults and into other lithologie.

The North Zone lies higher and to the north of the other zones. It appears to have been offset at several locations along its crude north-south strike. This zone is exposed on surface by Aylwin Creek. The Willa No. 1 and No. 2 adits were collared in the No 1 and No. 2 adits were collared in the North Zone on either side of the creek. The exposed portion of the zone is stained with limonite and chlorite. The zone is continuous and has a strike length of approximately 175 m, a width of 50 m and a depth of 125 m. The zone is partially composed of heterolithic breccia as well as feldspar porphyry, quartz latite porphyry and volcanic rocks of the Elise. The offsets of the North Zone can be subdivided into North Zone and Upper North Zone.

The East Zone is presently the smallest of the three zones. This may be due simply to the lack of drilling in this area. The majority of the zone is below the 1013 Decline, the 1013 Level and the 993 Decline. The East Zone is discontinuous and appears to be a series of sub-parallel veins striking west and northwest up to 80 m with widths up to 5 m. Mineralization extends 175 m downdip and is mostly located east of the contact with the breccia pipe and within the Elise. Further exploration is required to better define this zone. A mineral title (542206) owned by a third party abuts the eastern portion of the East Zone.

The Little Daisy (MINFILE 082FNW070) is a gold-silver polymetallic vein in granitic rocks. On the Property and/or within the Elise there are several polymetallic silver-lead-zinc±gold veins (Figure 3). The Silver Nugget (082FNW072) and Highland Light (082FNW075) are hosted in the Elise. The Mountain Scenery (082FNW074), Silver Band (082FNW073) and Midas Touch (082FNW269) are hosted in the Nelson Batholith. At the LH (082FNW212), gold, along with pyrite, pyrrhotite and arsenopyrite, occurs in silicified shear zones within the Elise.


Mining Methods

  • Sub-level stoping
  • Longhole open stoping


Summary:

Due to the wide widths and relatively low grade of the mineral economy dictates that low-cost underground mining methods must be employed. The mining method chosen for recovery of the mineral is long-hole open-stope mining, with sub-levels developed at 15-m vertical intervals. The longhole stopes are designed for:
1) Minimum widths of 3 metres, maximum widths at times exceeding 30 m,
2) Minimum lengths of 20 m and at times, exceeding 100 m.
3) Vertical dimensions varying from 20 m to 75 m.

The 15-m interval for the sub-levels will allow for confirmatory percussion-drill testing for stope boundaries, and where possible, for aintaining blast-hole lengths at 20 m or less.


Crushing and Grinding


Processing

  • Gravity separation
  • Flotation

Source: Subscription required

Summary:

The Willa mineral responds well to the typical grinding and flotation conditions. The testwork data are considered adequate for process design purposes provided the data are interpreted conservatively and flexibility is incorporated into the flotation circuit to permit easy circuit changes. Gravity concentration is also required in order to recover the coarse gold content. With the present required grind of 80% <50 µm, the MAX mill has a production capacity for Willa mineral, of between 300 and 350 tonnes per day. With the completion of the installation of the larger ball mill, the MAX
mill will be capable of processing in excess of 500 tpd.

Three concentrates will be produced from the Willa deposit: gravity (coarse gold), chalcopyrite (copper/gold) and pyrite (gold). The gravity (gold) concentrate will make up less than 1% of the total concentrate produced.

The MAX mill is a modern mill, constructed in 2007/08, designed to treat the molybdenum ore of the MA ........

Recoveries & Grades:

CommodityParameterAvg. LOM
Copper Concentrate Grade, %  ......  Subscription required
Subscription required - Subscription is required.

Projected Production:

CommodityProductUnitsLOM
Gold Metal in conc./ doré oz 75,122
Copper Metal in conc./ doré M lbs  ......  Subscription required
Copper Concentrate dmt  ......  Subscription required
Silver Metal in conc./ doré oz  ......  Subscription required

Operational Metrics:

Metrics
Daily mining capacity 400 t *
Daily milling capacity 400 t of ore *
Annual mining capacity 146 kt *
Ore tonnes mined, LOM 617,500 Mt *
Tonnes milled, LOM 617,500 Mt of ore *
Annual milling capacity 146 kt of ore *
* According to 2015 study.

Reserves at November 30, 2015:

CategoryTonnage CommodityGradeContained Metal
Measured 198,000 t Gold 5.36 g/t 34,000 oz
Measured 198,000 t Copper 0.83 % 3,623,000 lbs
Measured 198,000 t Silver 8.3 g/t 53,000 oz
Indicated 627,000 t Gold 4.97 g/t 100,000 oz
Indicated 627,000 t Copper 0.86 % 11,888,000 lbs
Indicated 627,000 t Silver 9.5 g/t 192,000 oz
Measured & Indicated 825,000 t Gold 5.07 g/t 134,000 oz
Measured & Indicated 825,000 t Copper 0.85 % 15,460,000 lbs
Measured & Indicated 825,000 t Silver 9.2 g/t 244,000 oz
Inferred 151,000 t Gold 4.21 g/t 20,000 oz
Inferred 151,000 t Copper 0.71 % 2,364,000 lbs
Inferred 151,000 t Silver 9.8 g/t 48,000 oz

Commodity Production Costs:

CommodityUnitsAverage
Assumed price Copper USD 2.75 / lb *
Assumed price Silver USD 16.5 / oz *
Assumed price Gold USD 1,200 / oz *
* According to 2015 study / presentation.

Operating Costs:

Units2015
UG mining costs ($/t mined) CAD 24.4 *
Processing costs ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2015 study.
Subscription required - Subscription is required.

2015 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Total CapEx $M CAD  ......  Subscription required
Total OpEx $M CAD  ......  Subscription required
Gross revenue (LOM) $M CAD  ......  Subscription required
EBITDA (LOM) $M CAD  ......  Subscription required
After-tax Cash Flow (LOM) $M CAD  ......  Subscription required
After-tax NPV @ 10% $M CAD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Subscription required - Subscription is required.

Heavy Mobile Equipment:

Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Preliminary Economic Assessment 2016
Feasibility Study Report 2009
Subscription required - Subscription is required.

News:

NewsDate
Cameo Closes Acquisition of Max Mine and Mill, Willa Property March 6, 2019

Subscription required - Subscription is required.

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