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File Created: 08-May-2023 by Karl A. Flower (KAF)
Last Edit:  08-Jun-2023 by Karl A. Flower (KAF)

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NMI
Name CASSIAR MOLY WEST, ANGEL 2, ELOISE 3-4 Mining Division Liard
BCGS Map 104P021
Status Showing NTS Map 104P04W
Latitude 059º 12' 02'' UTM 09 (NAD 83)
Longitude 129º 52' 27'' Northing 6562712
Easting 450070
Commodities Molybdenum Deposit Types L05 : Porphyry Mo (Low F- type)
Tectonic Belt Omineca Terrane Cassiar
Capsule Geology

The Cassiar Moly West occurrence is located on an east-west–trending ridge, south of Lang (Bass) Creek and approximately 7.5 kilometres west of the south end of Vines Lake.

Regionally, the area is underlain by alkali-feldspar granitic intrusive rocks of the Lower Cretaceous Cassiar Batholith.

Locally, the area is underlain by a quartz monzonite stock, at the eastern margin of the Lower Cretaceous Cassiar Batholith. Intrusive phases include a pink megacrystic porphyry, a coarse-grained porphyry, a grey porphyry and a finer-grained equigranular leucocratic quartz monzonite. All textural variants have gradational contacts. Alaskite, aplite and quartz-feldspar porphyry dikes and segregations occur throughout.

Molybdenite occurs as small rosettes and flakes in the fine-grained intrusions and in fractures and joints with pyrite within quartz-feldspar porphyries and adjoining megacrystic porphyries.

In 1967, a chip samples yielded 0.48 per cent molybdenite over 1.2 metres (Assessment Report 1700).

In 1979, three samples (VII, VIII and IX) yielded from 0.23 to 2.91 per cent molybdenite (Assessment Report 8009).

Work History

The area has been explored in conjunction with the nearby Cassiar Moly (MINFILE 104P 035) deposit and a complete exploration history can be found there.

Bibliography
EMPR AR 1967-26; 1968-36
EMPR ASS RPT *1700, 2265, 7206, *8009, 8277, 28928, 32115, 33394
EMPR BULL 83
EMPR EXPL 1976-E198; 1979-318; 1980-516
EMPR FIELDWORK *1978, pp. 55-56; *1979, p. 84; *1980, pp. 48-54; 1988, pp. 339-344
EMPR GEM 1969-41
EMPR GEOL 1977-81, pp. 188-189
EMPR MAP 65 (1989)
EMPR OF 1996-11
EMPR PF (Brown, C.J. (1980): Report of Physical Work, Son Group; Bloomer, Christopher, J.C.: The Casmo Deposit: A Geological Overview of a Late Cretaceous Molybdenite Deposit in Northern British Columbia, Paper presented at Sixth Annual District 6 Meeting - Victoria, October 1981)
EMPR PFD 20183, 20305
GSC MEM 319
GSC MAP 1110A
GSC OF 2779
Ostensoe, E.A. (2007-12-01): Review of Mt. Haskin and Cassiar Moly Molybdenum Prospects
Ostensoe, E.A. (2009-02-26): Amended Review of Mt. Haskin and Cassiar Moly Molybdenum Prospects
Ostensoe, E.A., Boyer, D.S. (2009-06-05): Technical Report and Resource Estimation Mt. Haskin Molybdenum Property

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