Carmi Moly deposit, Beaverdell, Greenwood Mining Division, British Columbia, Canadai

Regional Level Types
Carmi Moly deposit	Deposit
Beaverdell	Village
Greenwood Mining Division	Division
British Columbia	Province
Canada	Country

The CARMI MOLY deposit is located approximately 10 kilometres north-west of Beaverdell and 45 kilometres south-southeast of Kelowna, British Columbia.
The following quote is from B.C. Government site “Minfile”- Minfile No. 082ENW 036, current to 1990:
“An unnamed Middle Jurassic intrusion overlies a partially unroofed stock of the Valhalla Complex (Tertiary?). The Jurassic intrusive rocks are medium-grained foliated biotite granodiorites, cut by smaller bodies of related quartz diorite and quartz monzonite. The Valhalla Complex is a leucocratic muscovite-biotite quartz monzonite with several late-stage derivatives, including feldspar porphyry dikes and the matrix of the mineralized breccia zones.
Two mineralized breccia zones, the E and Lake zones, are localized within a thin fault-dissected cover of Nelson granodiorite.
The E zone breccia is characterized by a series of flat-lying to gently-dipping tabular breccia bodies along a 110 degree strike, over a length of 1800 metres with a width up to 500 metres. In the central part of the E zone breccia, the matrix is granodiorite intermixed with pegmatite, quartz, aplite, muscovite and biotite. Molybdenite occurs as rosettes within fragments, as thin lamellae on fragment/matrix boundaries, and as discrete flakes within the matrix. Where alteration within the breccia zone is intense, a greisen zone, consisting of quartz, muscovite, fluorite, sericite, epidote, chlorite and molybdenite, is developed in alaskite stocks of the Valhalla Complex. Pyrite, magnetite, chalcopyrite and minor bornite occur as fracture-fillings, blebs and disseminations within the mineralized zones. Associated uranium mineralization, represented by brannerite, is sporadically disseminated in the granodiorite, accompanied by purple fluorite. A drillhole (V8) intersected 0.038 per cent uranium (0.045 per cent U308) and 0.336 per cent molybdenum over 10.7 metres (Assessment Report 5203). This intersection, from 93 to 104 metres, included a 7.6 metre intersection of 0.05 per cent uranium (0.06 per cent U3O8).
The Lake Zone is about 750 metres west of the E zone. It dips steeply north and strikes 110 degrees. It is about 600 metres long, up to 150 metres wide and extends up to 400 metres depth. The matrix of the breccia consists of quartz monzonite intermixed with pegmatite, abundant quartz and aplite. Within the porphyry, quartz-sericite alteration zones form along incipient fractures. These zones average 15 centimetres in width and locally are up to 6 metres wide. Disseminated molybdenite occurs within the sericitized rock. Silver and gold values were also reported in core (Assessment Report 5203).
A third zone of molybdenite mineralization, referred to as the Pegmatite zone, is located approximately 1750 metres south east of the E zone. At the Pegmatite zone disseminated molybdenite occurs in a sheared pegmatite zone located at the top of a leucocratic quartz monzonite stock. The zone was tested by a percussion drill hole (79-P-94) in 1979 and is reported to have yielded 0.113 per cent molybdenum over 9.2 metres near surface and 0.03 per cent molybdenum over 12.2 metres at depth (Ewert, W. (2008-09-25): Technical Report and Resource Estimate on the Carmi Molybdenum Deposit, Kettle River Property).
The porphyry-breccia deposit is thought to have evolved by explosive venting of the underlying stock with breccia formation in structurally controlled cap rocks. Simultaneous magmatic emplacement of mineral phases from the stock developed in breccia voids. Subsequently, mineralized greisens formed in root zones of the stock.”

Comments by Giles Peatfield regarding some of the minerals reported:
Amethyst: Pease (1990) reported amethyst as a minor component of breccia and greisen bodies.
Bornite: Christopher (1977) reported bornite as a minor component of breccia, but it was not reported by Kenyon (1978) and I would regard it as tentative.
Brannerite: Kenyon (1978) reported brannerite, stating that “The U mineral at Carmi has been identified as brannerite by electron microprobe energy dispersive analysis by Dr. D.G.W. Smith (University of Alberta).” Christopher (1976, 1977) had reported uraninite, but in light of Kenyon’s research this would not seem to be valid.
Diopside?: Kenyon (1978) reported phenocrysts of pyroxene (“probably diopside”) in late-stage lamprophyre dykes.
Plagioclase: Kenyon (1978) noted many occurrences of plagioclase, mostly of intermediate composition.
Pyrolusite?: Kenyon (1978), noted that “A black, often dendritic manganese hydroxide stain (probably pyrolusite) occurs occasionally on fractures and joints within the mineralized and unmineralized areas.”
Stilbite: Kenyon (1978) described two varieties of stilbite. One he called “platey stilbite”, the other “stilbite (variety stellerite).”

Other Databases

Link to British Columbia Minfile:	082ENW036

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References