| Principal periods worked |
1870-95, 1920, 1929-30, 1939-44, 1953-59. |
| Workings |
Cut 500 long, 125 deep, adit 600. Stopes, inclines, drifts above and to 200 below adit level. |
| Description of muscovite |
Light reddish brown, ruled, minor bending. |
| Production |
Large sheet scrap |
| Shape |
Lenses, pinch and swell. |
| Size |
1-12 T |
| Strike |
NE |
| Dip |
SE |
| Plunge |
S |
| Relation to wallrock |
Concordant |
| Wallrock |
Interlayered hornblende and biotite gneiss; biotite alteration |
| Extent of weathering |
Saprolite (100 ft). |
| Remarks |
Pl-Q-P-M pegmatite, medium to coarse grained; accessory, biotite, spessartite, tourmaline, apatite, thulite, pyrite, pyrrhotite. Thicker lenses tend to have Pl-Q-M wall zone and P core. |
| Source of information |
USGS (Sterrett, 1923, p. 245) Olson (1944, p. 60-63, pls. 8-10. |
