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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  08-Jun-2023 by Karl A. Flower (KAF)

Summary Help Help

NMI 104P5 Mo3
Name RAY, CHAPPARAL, MARIE Mining Division Liard
BCGS Map 104P021
Status Showing NTS Map 104P05W
Latitude 059º 16' 09'' UTM 09 (NAD 83)
Longitude 129º 51' 51'' Northing 6570344
Easting 450741
Commodities Molybdenum, Silver Deposit Types L05 : Porphyry Mo (Low F- type)
Tectonic Belt Omineca Terrane Plutonic Rocks
Capsule Geology

The Ray occurrence is located immediately south of the Cassiar town site, 95 kilometres north of the community of Dease Lake.

Regionally, the area is underlain by granitic intrusive rocks on the eastern margin of the Lower Cretaceous Cassiar Batholith. To the east quartz arenite sedimentary rocks of the Lower Cambrian Boya Formation (Atan Group), limestone, marble and calcareous sedimentary rocks of the Lower Cambrian Rosella Formation (Atan Group), limestone, slate, siltstone and argillite of the Ordovician to Silurian Road River Group and calcareous sedimentary rocks of the McDame Group are exposed.

At the Ray showing, mineralization consisting of coarse-grained molybdenite rosettes is restricted to a 2.1-metre-wide pegmatite pod that trends 280 degrees and dips 80 degrees north. The pod is hosted in porphyritic quartz monzonite of the Lower Cretaceous Cassiar batholith.

The Marie showing, discovered in 2004, consists of molybdenite mineralization yielding 0.63 per cent molybdenum from float within a 500- by 250-metre zone of anomalous molybdenum and tungsten in rocks and soils, 700 metres north of the Ray showing. In the Marie showing area, a medium-grained quartz monzonite occurs in contact with a late-stage quartz feldspar porphyry phase intruded by mafic and felsic dikes.

A rusty cliff area, 500 metres south of the Marie showing and approximately 200 metres northwest of the Ray showing, exhibits extensive fracturing with minor molybdenite flakes noted in fractures; however, limited samples collected in 2006 (hampered by unstable slopes) did not contain significant molybdenum values.

In 1968, a chip sample from the Ray occurrence assayed 0.390 per cent molybdenum and 3.43 grams per tonne silver over 2.1 metres (Property File - Sevensma, 1968).

In 2003, a sample (7891) from the Ray occurrence assayed 0.38 per cent molybdenum (Assessment Report 27337).

In 2008, a float sample (54574) of oxidized quartz monzonite hosting molybdenite, located below a gossanous cliff approximately 500 metres southwest of the Ray occurrence, assayed 0.338 per cent molybdenum (Assessment Report 30680).

Work History

In 1969, Chapparal Mines Ltd. and Coast Silver Mines Ltd. completed a 486.0 line-kilometre airborne magnetic survey on the area. During 1979 through 1981, Shell Canada Resources Ltd. completed programs of geological mapping, geochemical (rock, silt and soil) sampling and ground geophysical (magnetic, electromagnetic and induced polarization) surveys on the area.

During 1998 through 2008, Eveready Resources Corporation completed programs of geological mapping, geochemical (rock and soil) sampling, trenching and induced polarization surveys on the Ray-Marie area of the Cassiar property. This work indicated a possible extension of the Storie (MINFILE 104P 069) molybdenite occurrence north to the Ray-Marie occurrence area. In 2014, BC Moly Ltd. completed a program of geological mapping on the Storie property.

Bibliography
EMPR AR 1968-35
EMPR ASS RPT 1962, 1990, 7912, 9262, 9548, 25889, 27203, *27337, 28052, *30680, 35420
EMPR BULL 83
EMPR FIELDWORK *1978, pp. 52,56; *1979, p. 84
EMPR GEM 1969-40
EMPR MP MAP 1992-13
EMPR OF 1989-9; 1996-11
EMPR PF (*Sevensma, P.H. (1968): Chapparel Mines Ltd.; Ray Group, 17 pages)
EMPR PFD 674005
EMR MP CORPFILE (Chapparel Mines Ltd.)
GSC MAP 1110A
GSC MEM 319
GSC OF 2779

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