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File Created: 24-Nov-2009 by Sarah Meredith-Jones (SMJ)
Last Edit:  11-Apr-2021 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name TAS-WEST, WEST, TAS Mining Division Omineca
BCGS Map 093K099
Status Prospect NTS Map 093K16W
Latitude 054º 54' 12'' UTM 10 (NAD 83)
Longitude 124º 19' 32'' Northing 6084829
Easting 415000
Commodities Gold, Copper Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The Tas-West occurrence is located 50 kilometres almost due north of the town of Fort St. James and accessed via the Germansen North Road and then west on the Inzana Lake Forestry Road for 10 kilometres.

The Tas-West property is mainly underlain by augite-phyric intermediate flows of the Upper Triassic Takla Group, Inzana Lake Formation. Late Triasic to Early Jurassic syenitic to monzonitic intrusive rocks intrude to the south.

The Tas-West occurrence comprises a strong shear zone hosting bands of massive to stringer pyrite, pyrrhotite and chalcopyrite in widths up to 2.0 metres. The shear zone trends 350 degrees and has been traced for at least 100 metres. Numerous east-west shears cause small, approximately 1-metre, offsets of the mineralization to the north west. The zone is reported to open along strike and at depth.

In 1986, trenching on the Tas West zone yielded up to 9.00 grams per tonne gold in trench no. 7 (Assessment Report 15687).

In 1987, chip sampling of the Tas West zone is reported to have yielded up to 37.8 grams per tonne gold over 1.5 metres, whereas drilling yielded up to 17.01 grams per tonne gold over 1.3 metres in hole 271-87-14 and 2.10 grams per tonne gold over 3.2 metres in hole 271-87-15 (Assessment Reports 16763 and 17234).

In 1999, Omni Resources Inc. optioned the Tas claims and followed up with a 691.9 metre, 7-hole NQ diamond-drill hole program on the West and Far East zones. Four of the holes were on the West zone. Omni reported that they discovered a previously unknown but significant mineralized zone on the West zone where gold was encountered in semi-massive to massive pyrrhotite plus/minus pyrite plus/minus chalcopyrite veins. The best mineralized zone intersected in the 1999 drill program was from 23.29 to 30.78 metres in hole TAS 99-5. The last 4.36 metres of this zone assayed 8.47 grams per tonne gold; in addition, significant values of approximately 2.47 grams (0.077 ounces) per tonne gold were assayed over the first 2.03 metres starting at 23.29 metres down hole (Assessment Report 26185).

Navasota Resources Ltd. optioned the nearby Tas property (093K 080) from Derry Halleran and proceeded to drill 7 holes in 2002 to test the West zone and a strong gold geochemical anomaly. Drillholes that tested the gold geochemical anomaly intersected a swarm of plagioclase porphyry dikes and intrusion breccia locally carrying disseminated to semi-massive and massive pyrite, pyrrhotite, lesser chalcopyrite and traces of arsenopyrite. Hole TS-066 cut 12.45 metres of semi-massive to massive pyrrhotite-pyrite-chalcopyrite grading 2.3 grams per tonne gold and 0.23 per cent copper (Assessment Report 27152). Other drilling intercepts included 0.37 gram per tonne gold over 56.65 metres in hole TS-065 and 2.40 grams per tonne gold over 19.00 metres in hole TS-067 (Assessment Report 27152).

See Tas (093K 080) for details of the related Tas work history.

Bibliography
EMPR BULL 99
EMPR EXPL 1985-C308; 1987-B48-49,C299; 1992-69-106
EMPR FIELDWORK 1990, pp. 89-110; 1992, pp. 475-482
EMPR MP MAP 1992-4
EMPR OF *1991-3
EMPR PF (Location Map, Noranda Expl., 1987; Excerpt from Report, unknown source and date; Cyprus Anvil (Richards, J.B. (1991-03-01): Summary Report on the Kalder Lake Prospect)
EMPR PF Placer Dome (Pinsent, R.H. (1985-07-05): Memo to I. Thomson re: TAS)
GSC MAP 630A; 907A; 1424A
GSC OF 2593; 2801; 2846
GSC P 90-1F, pp. 115-120; 91-1A, pp. 7-13
GCNL #15, 1990
N MINER Aug.28, 1989
PR REL Navasota Resources Ltd., Sept.10,*24, 2002; Jan.21, 2003; Golden Hat Resources Inc., Feb.25, 2004
V STOCKWATCH Jul.31; Aug.4, 1989
Placer Dome File

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