Principal periods worked |
WWII, 1953-60 |
Workings |
3, adits, stopes, drifts in area 300 by 450. |
Description of muscovite |
Green, clear, moderately bent, ruled, tied. |
Production |
Large sheet, feldspar. |
Shape |
Irregular, branching, pinch and swell. |
Size |
1-10 T |
Strike |
Variable |
Dip |
Variable |
Plunge |
Variable |
Relation to wallrock |
Discordant |
Wallrock |
Interlayered hornblende and biotite gneiss, biotite alteration |
Extent of weathering |
Unweathered |
Remarks |
Pl-Q-M walls zone, medium to coarse grained; P-Q core, coarse grained, discontinuous; accessory garnet, allanite, pyrite, thulite. Cut by numerous joints and faults and a diabase dike. |
Source of information |
USGS, CMC, OF. |