Wolf Ridge mine

Mica Mine in Avery county, North Carolina

Wolf Ridge mine

Principal periods worked 1924, 1926, 1930, 1937-38, WWII.
Workings Cut 100, incline 100, other caved or filled inclines.
Description of muscovite Pinkish buff, "A" structure, reeved, tied, bent, cracked, ruled, minor biotite intergrowths.
Production Moderate sheet, feldspar.
Shape Irregular lenses.
Size 10-20 T
Strike NW
Dip SW
Plunge S
Relation to wallrock Partly concordant
Wallrock Mica gneiss
Extent of weathering Unweathered
Remarks Pl-P-Q-M pegmatite, medium to coarse grained; accessory biotite, garnet, sericite, apatite. Other pegmatite to east mined for feldspar.
Source of information USGS

Geographic context


Principal periods worked
WWI World War I
WWII World War II
int intermittent
Small < 500 lb
Moderate 500-10,000 lb
Large > 10,000 lb
Size of pegmatite
D depth
L length
T thickness
avg average
Internal structure
B biotite
F feldspar
M muscovite
P perthite
Pl plagioclase
Q quartz
Source information
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