| Main commodities | Pb; Zn |
|---|---|
| Other commodities | Cu |
| Ore minerals | arsenopyrite; chalcopyrite; galena; sphalerite |
| Gangue minerals | calcite |
| Quadrangle map, 1:250,000-scale | AN |
|---|---|
| Quadrangle map, 1:63,360-scale | B-7 |
| Latitude | 61.42 |
| Longitude | -149.39 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | Located on northwestern slope (1,500 ft elevation) of Mount Eklutna, 3,500 ft southeast of Mirror Lake. Accurate within 1,000 ft. Labeled as 'Lead-zinc prospect' by Clark and Bartsch (1967), locality 38 of Cobb (1972), and locality 28 of MacKevett and Holloway (1977). |
Geologic descriptionCountry rock is greenstone and silicified rhyolite of Jurassic to Permian age. A vertical zone about 3 ft wide contains disseminations and small masses of arsenopyrite, pyrite, sphalerite and galena. In addition, a 2 inch wide calcite vein found within a zone of rusty gouge contains disseminated sphalerite, galena, and chalcopyrite (Landes, 1927). | |
| Geologic map unit | (-149.392216897646, 61.4194609010009) |
|---|---|
| Mineral deposit model | Kuroko massive sulfide? (Cox and Singer, 1986; model 28a?). |
| Mineral deposit model number | 28a? |
| Age of mineralization | Jurassic or younger. |
| Workings or exploration | Surface mapping and sampling. |
|---|---|
| Indication of production | None |
Additional commentsNot enough base metal mineralization exposed to encourage development work (Landes, 1927). | |
| MRDS Number | A011639 |
|---|---|
References | |
| Reporters | D.P. Bickerstaff (USGS contractor); S.W. Huss (USGS) |
| Last report date | 7/30/1998 |