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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  09-Jun-1993 by Moira T. Smith (MTS)

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NMI 114P8 Au1
Name GOLD CORD, STAMPEDE Mining Division Atlin
BCGS Map 114P048
Status Showing NTS Map 114P07E, 114P08W
Latitude 059º 26' 59'' UTM 08 (NAD 83)
Longitude 136º 30' 27'' Northing 6591099
Easting 414527
Commodities Gold, Silver, Copper Deposit Types
Tectonic Belt Insular Terrane Alexander
Capsule Geology

Oligocene(?) equigranular, fine to medium-grained diorite intrudes a sequence of Paleozoic or Lower Mesozoic limestones and argillite. The diorite is foliated near the Gold Cord vein, with foliation paralleling the vein. East trending faults are common. Basic dykes cut both intrusives and sediments. The Gold Cord vein follows the footwall of a shear zone in the diorite, and strikes about 115 degrees and dips 30 to 80 degrees north. It has been traced on surface for over 470 metres. The vein consists of white quartz sparsely mineralized with free gold, pyrite, local chalco- pyrite and trace sphalerite. On surface the vein ranges from 0.1 to 0.75 metres wide; underground it splits into two or three distinct 30 to 120 centimetre veins. A chip sample across 0.6 metres with visible gold assayed 72 grams per tonne gold, 190.0 grams per tonne silver, and 2.13 per cent copper.

Bibliography
EMPR FIELDWORK *1985, pp. 191-194
EMPR BULL *1, pp. 40-41; 25, pp. 59-60
EMPR AR 1915-65; 1921-77; 1926-106; 1927-111,112; 1928-122; 1929-120; 1930-122; 1931-63
EMPR PF (*Mandy, J.T. (1932): Gold Cord Group, North-South section showing geology)
EMPR ASS RPT *13590, 17896
Eakin, H.M. (1919): *The Porcupine gold placer district, Alaska, USGS BULL 699, p. 14, Plate 1
GSC OF 926, 2191
EMPR Exp. Rev. 1984, p. 6 (Schroeter, T.G.)
EMPR EXPL 1985-C414

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