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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  27-Aug-2007 by Sarah Meredith-Jones (SMJ)

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NMI 092C14 Fe4
Name SARITA RIVER, BRITISH PACIFIC (L.25), BLACK BEAR (L.23), MIDDAY (L.26), UNION (L.54), EUREKA (L.24), OMA, KID, KATHY, RC, POETT HEIGHTS, DOER Mining Division Alberni
BCGS Map 092C086
Status Showing NTS Map 092C15W
Latitude 048º 52' 44'' UTM 10 (NAD 83)
Longitude 124º 59' 15'' Northing 5415897
Easting 354281
Commodities Copper, Zinc, Lead, Gold, Silver, Iron Deposit Types
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The British Pacific showings are located 60 kilometres southwest of Port Alberni just south of the Numukamis Reserve No.1. The Doer showing (092C 006) is located just to the west. In the Sarita River area, exploration for iron is recorded in 1895 and activity apparently continued until 1922 during which time an adit was developed on the Reserve.

The area is underlain by carbonate rocks of the Upper Triassic Quatsino Formation, Vancouver Group and volcanic rocks of the Lower Jurassic Bonanaza Group. These have been intruded by Early to Middle Jurassic Island Plutonic Suite granitic rocks. The structural trend is northwest with easterly dips. Mineralization consists of pyrite, pyrrhotite, chalcopyrite, sphalerite, galena and possibly tetrahedrite in skarns and shear zones.

The skarn zones formed in the more siliceous shattered volcanics and tuffs of the Bonanza Group at the contact with Quatsino limestone as a result of the intrusive event. The contact of skarn with unreplaced rock is sharply defined but irregular. Skarn formation in volcanics is incomplete away from the limestone and mainly forms pods, tabular bodies and veins. Skarn mineralization comprises garnet, pyroxene, epidote, actinolite and chlorite.

The occurrence comprises two main skarn showings, the Upper and Lower on Lot 25, a shear zone on the Black Bear Crown grant (Lot 23) and breccia zones on the Midday Crown grant (Lot 26).

The Upper and Lower showings consist of pyritic calcic skarns in sheared acidic Bonanza volcanics, mineralized with pyrrhotite and minor chalcopyrite. Selected samples taken near the Upper showing assayed 526 grams per tonne silver and drilling results were up to 1.37 grams per tonne gold and 193.34 grams per tonne silver (Assessment Report 18662). Surface samples of the Lower showing, 366 metres to the north, assayed 1.37 grams per tonne gold and 1.71 grams per tonne silver (Assessment Report 18662). A bluff of massive magnetite occurs just west of the Lower showing hosted in mafic to intermediate Bonanza volcanics. A drilling program in 1988, on the Lower showing, had disappointing results.

Drilling, on the Black Bear Crown grant in 1979, to the north of the showings, on a shear zone assayed up to 25.362 grams per tonne gold and 30.852 grams per tonne silver (Assessment Report 18662).

On the Midday Crown grant (Lot 26), just west of the showings, limestone breccia zones are mineralized with pyrite, sphalerite and chalcopyrite.

In 1991, K.W. Resources acquired a 100% interest in the Sarita mineral claim.

Bibliography
EMPR AR 1899-784; 1896-4; 1897-566; 1902-215; 1906-189; 1916-275;
1961-111; 1965-77; 1966-77
EMPR ASS RPT 5472, 7943, 7976, *9509, 13968, *18662
EMPR EXPL 1979-124
EMPR FIELDWORK 1989, pp. 503-510
EMPR GEM 1971-227
EMPR OF 1988-24; RGS 24, 1990
EMPR PF (In 092C General File - Aeromagnetic Contour Map, Nitinat
Lake Area, Noranda Mines Ltd., date unknown; in 103P 118 -
Marshall Creek Annual Report 1965; Miscellaneous Road Maps of area
c.1973; Rattler Resource Ltd. Prospectus, May 1988)
GSC BULL 172
GSC EC GEOL No. 3, Vol. 1, p. 191-198
GSC MAP 1386A
GSC MEM 13
GSC OF 463; 821; 1272
GSC P 72-44; 76-1A; 79-30
CANMET RPT No. 47, p.12
GCNL #155,#159,#161,#233, 1979; #5,#6,#9,#27,#37,#38,#61,#95,#180,
#237, 1980; #5,#10,#80,#82, 1981; #8, 1987; #149, 1991
N MINER May 21, 1981
Carson, D.J.T. (1968): Metallogenic study of Vancouver Island with
emphasis on the relationships of mineral deposits to plutonic
rocks, Ph.D. Thesis, Carleton University
Falconbridge File

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