| Principal periods worked | 1874-76, Int 1906-36, WWII, 1953-57. |
|---|---|
| Workings | Cut 250, old stopes, inclines. |
| Description of muscovite | Green, minor "A" structure, bent, ruled, cracked, mineral inclusions. |
| Production | Small sheet |
| Shape | Lenses |
| Size | 1-10 T |
| Strike | NW |
| Dip | SW |
| Plunge | SE |
| Relation to wallrock | Partly concordant |
| Wallrock | Mica gneiss |
| Extent of weathering | Weathered |
| Remarks | Pl-Q-M pegmatite. |
| Source of information | Sterrett (1923, p. 183), USGS |
| WWI | World War I |
| WWII | World War II |
| int | intermittent |
| Small | < 500 lb |
| Moderate | 500-10,000 lb |
| Large | > 10,000 lb |
| D | depth |
| L | length |
| T | thickness |
| avg | average |
| B | biotite |
| F | feldspar |
| M | muscovite |
| P | perthite |
| Pl | plagioclase |
| Q | quartz |
| CMC | Colonial Mica Corporation |
| DMEA | Defense Minerals Exploration Administration |
| OME | Office of Minerals Exploration |
| USGS | U.S. Geological Survey |
| OF | USGS open-file reports and maps |