| Basis for focus area |
Mining district boundaries from McLemore (2017). |
| Identified resources |
Historical production of copper, gold, lead, manganese, molybdenum, silver, tungsten and zinc. |
| Production |
Historical production: Lake Valley district (1878-1957): 100,000 lbs Cu, 6,126,000 oz Ag, >500,000 lbs Pb, 45,540 long tons of 23% Mn and 57,800 long tons 25% Mn; Hermosa district: 1,850 lbs Cu, 1,250,000 oz Ag, 47,600 lbs Pb, and 8,000 lbs Zn; Tierra Blanca district: 92,784 lbs Cu, 97 oz Au, 165.000 oz Ag, 318.687 lbs Pb, and 464,055 lbs Zn (as well as 10,000 tons WO3); Macho district: 31.4 oz Au, 20,000 oz Ag, 679,000 lbs Pb, and 11,000 lbs Zn; Kingston district: 2,520 long tons of 34-39% Mo ore plus 1,651 long tons of 35 to 40% Mo, 111.950 lbs Cu, 124 oz Au, 6,126,000 oz Ag, 378,820 lbs Pb, and 566,900 lbs Zn (McLemore and Nutt, 2002). |
| Status |
Past mining. |
| Estimated resources |
Unknown. |
| Geologic maps |
O'Neill and others (2002), scale 1:24,000. |
| Geophysical data |
See Klein and others (2002). |
| Favorable rocks and structures |
Carbonates surrounding Emery caldera. |
| Deposits |
Columbia mine (MRDS dep_id: 10013459), Sierra Grande (Bridal Chamber) (MRDS dep_id: 10272486), Sierra Bella (MRDS dep_id: 10248293). |
| Evidence from mineral occurrences |
MRDS; McLemore and others (2005); McLemore and Nutt (2002); McLemore (1998). |
| Geochemical evidence |
As much as 2,800 ppm Te and 1310 ppm W from Tierra Blanca; see McLemore and Nutt (2002), Korzeb and Kness (1994), Korzeb and others (1995). |
| Geophysical evidence |
Klein and others (2002). |
| Evidence from other sources |
McLemore and Nutt (2002). |
| Comments |
The BLM has developed the Lake Valley historical townsite as a recreation area. |
| Cover thickness and description |
Potential for buried deposits. |
| Authors |
Virginia T. McLemore. |
| New data needs |
Detailed and alteration mapping. |
| Geologic mapping and modeling needs |
Lake Valley is mapped in detail, the other mining districts require detailed mapping. |
| Geophysical survey and modeling needs |
High resolution, Rank 1 aeromagnetic and aeroradiometric coverage. |
| Digital elevation data needs |
Lidar complete. |
