| Principal periods worked | 1913-14, 1923-24, 1942. |
|---|---|
| Workings | 4 cuts, 2 short stopes, adit 45. |
| Description of muscovite | Brown, moderately stained, biotite intergrowths, concentrated in wall zone; green "A" structure, in core. |
| Production | Moderate sheet |
| Shape | Lenses |
| Size | 3-10 T |
| Strike | NE |
| Dip | SE |
| Relation to wallrock | Concordant |
| Wallrock | Mica gneiss |
| Remarks | Pl-P-Q-M wall zones, medium to coarse grained; accessory biotite, garnet, pyrite; Q-M core, discontinuous. |
| Source of information | 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 |