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File Created: 04-Jan-88 by Laura L. Coughlan(LLC)
Last Edit:  29-May-15 by Karl A. Flower(KAF)

Summary Help Help

NMI
Name JESSI 2, JESSI, TOY, J.P. II, PLAT 1, CGB Mining Division New Westminster
BCGS Map 092H044
Status Showing NTS Map 092H06E
Latitude 49º 25' 04" N UTM 10 (NAD 83)
Longitude 121º 13' 22" W Northing 5475418
Easting 628897
Commodities Copper, Gold, Nickel, Chromium, Cobalt Deposit Types I01 : Au-quartz veins
M05 : Alaskan-type Pt+/-Os+/-Rh+/-Ir
Tectonic Belt Coast Crystalline Terrane Bridge River
Capsule Geology

The Jessi 2 occurrence is located approximately 1500 metres southeast of Serpentine Lake.

The eastern margin of the Coquihalla Serpentine Belt is sharply delineated by the Hozameen fault, which is termed the "East" Hozameen fault". The serpentine belt forms an elongate, north-northwest trending, steeply dipping unit separating supracrustal rocks of the Lower-Middle Jurassic Ladner Group in the east, from the Permian-Jurassic Hozameen Complex to the west.

The Ladner Group comprises a sequence of fine- grained, poorly to well- bedded, slaty argillites and siltstones. These metasediments have undergone lower greenschist facies metamorphism. The Ladner Group overlies older greenstones, which are traceable discontinuously for more than 15 kilometres along the east side of the East Hozameen fault. The greenstone-Ladner Group contact is commonly marked by faulting and shearing, but in places the sedimentary rocks rest directly on the volcanic rocks with either an unconformable or disconformable relationship. The greenstone, comprised of altered basalts and andesites, represents either the lower part of the Ladner Group or a basement to the Ladner Group sediments.

Locally, minor disseminated pyrrhotite, chalcopyrite and pyrite are hosted in volcanic greenstones and metasediments. Also, pyritiferous argillite hosts minor pyrrhotite and chalcopyrite in quartz stringers. Alteration minerals consist of quartz, calcite, sericite and chlorite.

In 1981, samples yielded less than 0.07 gram per tonne gold with trace copper (Assessment Report 9766).

In 2010, a chip sample (CR90530-2) from an out crop of serpentinite, located in a steep creek valley immediately to the east, assayed 0.216 per cent nickel, 0.246 per cent chromium and 0.01 per cent cobalt over 2.0 metres (Assessment Report 31555).

In 1971, Mountain Pass Mines completed a program of rock sampling on the area. During 1979 through 1984, Aquarius Resources completed programs of soil and rock sampling on the area as the Jessi claims. In 2000 and 2001, Hillsbar Gold completed a program of prospecting and geological mapping on the area as the Plat 1 claim. During 2010 through 2012, New Carolin Gold completed programs of prospecting and rock, silt and soil sampling and 434.4 line-kilometres of combined electromagnetic, magnetic and radiometric airborne geophysical surveys on the area as the CGB claims.

Bibliography
EMPR ASS RPT 2999, 3000, 3620, *7595, 8533, *9766, 13046, *16245, 26066, 26684, *31555, 32726, 33283
EMPR EXPL 1979-143
EMPR FIELDWORK 1982, pp. 62-84
EMPR GEM 1971-266
EMPR OF MAP 1986-1D
GSC MAP 12-1969
GSC MEM 139
GSC P 69-47
GSC SUM RPT 1929A, pp. 144A-198A

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