Main commodities | Au; Cu; Zn |
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Ore minerals | chalcopyrite; pyrite; sphalerite |
Gangue minerals | calcite; quartz |
Quadrangle map, 1:250,000-scale | CR |
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Quadrangle map, 1:63,360-scale | B-2 |
Latitude | 55.49299 |
Longitude | -132.5329 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | Sainsbury (1961) reported a mineral occurrence near a logging road on the west side of Kina Cove. Hedderly-Smith (1999 [Inventory]) locates this or another nearby occurrence west of the head of Kina Cove, in the SW1/4 section 32, T. 73 S., R. 85 E. The Hedderly-Smith location is used for this record. |
Geologic descriptionSainsbury (1961) reported about 2 percent chalcopyrite in recrystallized limestone in a stream bed on the west side of Kina Cove, and as much as 5 percent chalcopyrite in a knob of recrystallized limestone on the shoreline of the cove. The limestone is probably part of the Descon Formation of Silurian and Ordovician age. At or near this location, Hedderly-Smith (1999 [Inventory]) found a 12-inch-thick quartz-pyrite vein in an altered zone in greenstone. A sample contained 904 parts per million (ppm) copper, 2.14 percent zinc, 3.7 ppm silver, and 910 parts per billion gold. | |
Geologic map unit | (-132.534567632083, 55.4926281295315) |
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Mineral deposit model | Chalcopyrite in marble and quartz vein in greenstone. |
Age of mineralization | Unknown, other than that the occurrences are in Silurian or Ordovician rocks. |
Alteration of deposit | Greenstone near a quartz vein is altered. |
Workings or exploration | Only surface sampling by government and industry geologists. |
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Indication of production | None |
MRDS Number | A010024 |
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ReferencesHedderly-Smith, D.A., 1999, Inventory of metallic mineral prospects, showings and anomalies on Sealaska lands, 1988 through 1998: Sealaska Corporation, Juneau, Alaska, 217 p. (internal report held by Sealaska Corporation, Juneau, Alaska).
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Reporters | D.J. Grybeck (Applied Geology) |
Last report date | 5/1/2004 |