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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  28-Feb-1995 by Dorthe E. Jakobsen (DEJ)

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NMI
Name CHRIS, NITHI, A-LINE, LINDA 10 Mining Division Omineca
BCGS Map 093F096
Status Showing NTS Map 093F15W
Latitude 053º 58' 05'' UTM 10 (NAD 83)
Longitude 124º 51' 11'' Northing 5981557
Easting 378447
Commodities Molybdenum Deposit Types L05 : Porphyry Mo (Low F- type)
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Chris showing is located about 9 kilometres south of Fraser Lake on the Nithi claim on the southern slopes of Nithi Mountain.

In 1963, R and P Metals Corp. conducted soil sampling, trenching and diamond drilled 14 holes on Nithi Mountain. In 1975, Amax Potash Ltd. completed mapping, soil sampling and geophysical surveys on ground partly covered by the Nithi claim. In 1976, Amax completed 975 metres of percussion drilling before dropping their option on the property. In 1980, Rockwell Mining Corp. conducted soil and rock sampling, prospecting and trenching on the ground covered by the Nithi claim. In 1981, 1818 metres of drilling was completed, with 4 out of the 10 holes located on the Nithi claim near the Chris showing. In 1991, Equity Engineering Ltd. conducted prospecting and mapping and examined the 1963 drill core stored on the property.

The region is within the Intermontane Belt, underlain dominantly by Lower to Middle Jurassic volcanic and sedimentary rocks of the Hazelton Group. These assemblages are overlain by the Upper Cretaceous to Lower Tertiary Ootsa Lake Group and Miocene plateau basalt. Intruding Lower Jurassic rocks of the Hazelton Group in the northeastern part of the map sheet is a belt of granodiorite, diorite and quartz diorite plutons of the Lower Jurassic Topley intrusive suite. Felsic plutons of probable Cretaceous age intrude both Lower and Middle Jurassic Hazelton strata. The Topley intrusive suite ranges in composition from diorite to alaskite but consists mainly of quartz monzonite and diorite. In the area of the showings two main intrusive phases have been recognized, the Nithi quartz monzonite and the Casey quartz monzonite to alaskite.

Mineralization consists of quartz-molybdenite veins and molybdenite stringers within fractured quartz veins. The veins are up to 20 centimetres in width and strike 060 to 070 degrees. Disseminated molybdenite is rare but when present is often associated with quartz veins. Molybdenite occurs locally along the vein walls but more commonly fills later fractures within the quartz veins. Trace pyrite, iron staining and hematite, commonly lining fractures, are present. Mineralization is hosted within argillically altered Nithi quartz monzonite. Phyllic and potassic alteration are present to a much lesser degree.

The eastern extension of the Chris showing, located immediately to the east, consists of parallel veins containing molybdenite stringers. A 1.4 metre wide chip sample across this showing assayed 0.1055 per cent molybdenum (Assessment Report 22194). The A-line showing, about 1500 metres northwest of the Chris showing, resembles a stockwork and consists of quartz-molybdenite veins, 4 to 10 centimetres wide, and pods. A 4.0 metre chip sample across this showing assayed 0.0705 per cent molybdenum (Assessment Report 22194).

Bibliography
EMPR ASS RPT 5489, 5714, 5915, 8399, 8470, 9110, 9368, 10314, *22194
EMPR EXPL 1975-E132; 1976-E142; 1978-E202; 1980-323; 1982-292; 1992-69-106
EMPR AR 1965-Figure 24; 1966-118
EMPR FIELDWORK 1992, pp. 475-481; 1993, pp. 9-14; 1994, pp. 167-170, 193-197
EMPR PF (See 093F General File, Nithi Mountain Area Maps; See 093K General file, Endako Area Maps)
GSC P 90-1F, pp. 115-120
GSC MEM 324
GSC MAP 1131A; 1424A
EMPR PFD 680667, 680668, 680669

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