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File Created: 18-May-2006 by Garry J. Payie (GJP)
Last Edit:  25-May-2006 by Laura deGroot (LDG)

Summary Help Help

NMI
Name BLACK BEAR CREEK, RDN, ARCTIC Mining Division Skeena
BCGS Map 104G017
Status Showing NTS Map 104G02E
Latitude 057º 06' 21'' UTM 09 (NAD 83)
Longitude 130º 39' 39'' Northing 6330400
Easting 399400
Commodities Gold, Lead, Zinc Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The RDN property covers a felsic centre which lies near the top of the Early to Middle Jurassic Hazelton Group. Variably altered dacitic to trachytic volcanics and subvolcanic intrusives, with lesser rhyolite, are overlain by carbonaceous, pyritic argillite and pillow basalt.

Mapping and sampling in 2004 located numerous sub-vertical, roughly north trending, quartz-carbonate veins and breccia zones cutting felsic volcanic and minor sedimentary rocks near the mouth of Black Bear Creek. The veins commonly contain galena and sphalerite and pyrite is ubiquitous. Quartz veining and clay alteration is common in the wall rocks to these zones, along with shearing, creating broken altered zones several metres across. Select samples from this area assayed up to 3.3 grams per tonne gold, 1.2 per cent lead and 4.5 per cent zinc. (Assessment Report 27692). The numerous small veins, sampled in the Upper Triassic Stuhini Grouprocks, may provide the source of Au-Ag-As-Cu-Pb-Zn geochemical anomalies in the area. Altered breccia zones in dacitic tuff may also be the source of geochemical anomalies.

Additional veining and alteration occurs north along Black Bear Creek, which may be following a structural zone north from More Creek. Quartz-carbonate vein stockwork and pervasive alteration occurs about 250 metres north of More Creek. Two samples from this location returned strongly anomalous gold and arsenic values, including one result of 1.1 grams per tonne gold. (Assessment Report 27692).

Please refer to the RDN (Wedge) MINFILE description - 104G 144, for a history of the property.

Bibliography
EMPR EXPL 1996-B11; 1999-1-11; 2000-1-8; 2001-1-9,65-71; 2004-30; 2005-32
EM INF CIRC 2000-1, p. 14; 2001-1, p.10
EMPR FIELDWORK *1991, pp. 161-178
EMPR OF 1999-2; 1999-14
EMPR PF (Rimfire Minerals Corporation Website (Dec. 1999; Feb.2000):
RDN Property; Awmack, H.J. (1999): The RDN 1-18 claims: An Eskay
Creek Analogue)
N MINER Sept. 16, 1991, July 17, 2000; Aug.12, Dec.2, Dec.30, 2002
Rimfire Minerals Corporation, July 13, Aug.23, Oct.1, 1999; Jun.21,23, Aug.31, Nov.30, Dec.19, 2001; Apr.25, Aug.2, Oct. 15, Dec.17, 2002; Jan.12, Mar.25, Oct.20, 2004; Jun.29, Sept.8, Dec.15, 2005; Apr.3, 13, 2006
Vancouver Stockwatch Aug.23, Sept.7,11,18, 1990
EMPR PFD 373

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