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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  15-Aug-1996 by Keith J. Mountjoy (KJM)

Summary Help Help

NMI
Name KOKOMO FR. (L.3067), KO KOMO FRACTION Mining Division Greenwood
BCGS Map 082E045
Status Past Producer NTS Map 082E06E
Latitude 049º 25' 40'' UTM 11 (NAD 83)
Longitude 119º 03' 52'' Northing 5477061
Easting 350304
Commodities Silver, Lead, Zinc, Gold Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Plutonic Rocks, Harper Ranch
Capsule Geology

The Kokomo Fr. (Lot 3067) past producer is located 2.5 kilometres west of the summit of Mount Wallace and 1.75 kilometres east-southeast of Beaverdell, British Columbia (Assessment Report 16772).

The Kokomo occurrence was first discovered and actively developed in 1915 by G. Barrett and associates. The first shipment of ore occurred in the following year. Other shipments were made in 1917, 1918, 1920 and 1921. In 1927, the claim was Crown granted to M.Wm. Smith. Since 1949, work has been intermittent and ownership has changed several times: 1947 - Silver Bounty Mines Ltd., 1958 - Sheritt-Lee Mines Ltd., 1963 - Ruby Silver Mines Ltd., 1971 - Copper Bounty Mines Ltd. and 1983 - Walmont Precious Metals Corp. The occurrence is currently owned by IGF Metals Inc.

For a detailed description of the geology and mineralization of the area refer to the Beaverdell (082ESW030).

The Kokomo Fr. (Lot 3067) adjoins the Tiger claim (082ESW067) in the southeast and the Sally mine (082ESW073) in the northwest. The property is underlain by chloritic granodiorite of the Westkettle batholith. Some zones of clay alteration and bleaching within the granodiorite are evident. Mineralized quartz veins occur in a shear zone striking 220 degrees and dipping 40 degrees northwest (Minister of Mines Annual Report 1967, page 224). The shear zone is 6 to 7.5 metres wide and has been intruded by fine grained, dark green massive dioritic rock, parallel to subparallel to the shear zone, most evident where brecciation is more intense. Other shears strike southeast and dip southwest 50 degrees to vertical. The shear zone hosting the veins is locally silicified, highly faulted and fractured. The veins strike 135 degrees and dip steeply southwest. Two branching veins are cut and offset by two parallel northeast- striking, northwest-dipping faults. Offset is right-lateral approximately 15 metres. Potassium feldspar flooding is locally exhibited. Oxidation mineralogy consisting of limonite and pyrolusite occurs within fractures in the quartz veins. Mineralization consists of sometimes massive sphalerite, galena, pyrite, tetrahedrite and minor native silver in a gangue of mainly quartz and lesser calcite.

Extensive work by MPH Consulting in 1969 outlined eleven vein, veinsets and mineralized zones including three on the Kokomo and Tiger (082ESW067) claims; (1) Kokomo-Tiger north vein, (2) Kokomo-Tiger central vein set and (3) Kokomo-Tiger south vein set (Assessment Report 16772). Drilling in 1987 has defined an oreshoot correlating with ore indications on the adjoining Rob Roy (082ESW073). Drillhole 87-2 intersected 0.76 metre of quartzy ore consisting of quartz hosting massive sphalerite with galena and pyrite. Samples yielded 1.03 grams per tonne gold, 2466 grams per tonne silver, 2.19 per cent zinc and 5.88 per cent lead (Assessment Report 16772). Drillhole 87-3 intersected 0.55 metre true width of massive pyrite with galena and sphalerite. Samples yielded 0.68 gram per tonne gold, 1348 grams silver, 0.49 per cent lead and 1.99 per cent zinc (Assessment Report 16772).

Total recorded production between 1916 and 1921 for the Kokomo occurrence was 56 tonnes, from which 358,680 grams of silver and 5939 kilograms of lead was recovered. Ore was sent to both the Trail and Granby smelters.

Bibliography
EMPR AR 1915-K203; 1916-K255,K518; 1917-F203,F212,F449; 1918-K210; 1920-N163; 1921-G185,G188; 1927-C481; 1928-C253; 1949-A138-A143; 1966-191; 1967-224
EMPR INDEX 3-202
EMPR ASS RPT 16771, *16772
EMPR BC METAL MM00883
EMPR GEOLOGY 1975, Figure G-17
EMPR OF 1989-5
GSC MAP 538A; 539A; 37-21; 15-1961; 1736A
GSC MEM *79, pp. 90,125-126
GSC OF 481; 637; 1505A; 1565; 1969
GSC P 37-21
CJES *Vol. 19, No. 6, pp. 1264-1274, 1984
*Watson, P.H. (1981): Genesis and Zoning of Silver-Gold Veins in the Beaverdell Area, south-central British Columbia, M.Sc. Thesis, University of British Columbia, 156 pp.
EMPR PFD 751997, 801990

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