Main commodities | Cu |
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Ore minerals | chalcopyrite; pyrite; pyrrhotite |
Gangue minerals | quartz |
Quadrangle map, 1:250,000-scale | CV |
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Quadrangle map, 1:63,360-scale | C-5 |
Latitude | 60.644 |
Longitude | -145.581 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | Site is at an elevation of about 2000 feet near the head of Snyder Falls Creek. It is in the NE1/4 sec. 21, T. 14 S., R. 2 W., of the Copper River Meridian. Location of site is accurate to within 1000 ft. Location is the same as site C-24 of Jansons and others (1984). |
Geologic descriptionThis occurrence consists of small veinlets of chalcopyrite and of disseminated pyrite and pyrrhotite in greenstone 'pods' in sedimentary rocks of the Orca Group (Jansons and others, 1984; Nelson and others, 1985). These pods probably represent localized mafic flows or structurally disrupted flows. Ten grab samples analyzed from the area contained from 29 ppm to 3.35% Cu (Jansons, 1984). | |
Geologic map unit | (-145.582956954135, 60.6434532813638) |
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Mineral deposit model | Cyprus massive sulfide (Cox and Singer, 1986; model 24a) |
Mineral deposit model number | 24a |
Age of mineralization | Probably Tertiary based on the age of the host rocks. |
Workings or exploration |
Site was visited as part of a regional mineral assessment of the Chugach National Forest (Nelson and others, 1984; 1985; Jansons and others, 1984). Ten grab samples analyzed from the area contained from 29 ppm to 3.35% Cu (Jansons, 1984). |
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Indication of production | None |
Additional commentsChugach Alaska Corporation, Anchorage, Alaska has control of these lands. |
MRDS Number | 10307379 |
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References | |
Reporters | S.W. Nelson, Anchorage, AK |
Last report date | 6/10/2000 |