Justice mine

Mica Mine in Avery county, North Carolina

Justice mine

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

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