Cow Camp South mine

Mica Mine in Avery county, North Carolina

Cow Camp South mine

Principal periods worked Pre-WWII, 1951-57.
Workings Cut 350, 6, adits, in area 150 by 350.
Description of muscovite Ruby, minor bending, ruling, small
Production Moderate sheet, large scrap.
Shape Lenses
Size 0.5-3 T, 30 L
Strike NE
Dip NW
Relation to wallrock Concordant
Wallrock Interlayed hornblende and biotite gneiss
Extent of weathering Saprolite (>30 ft).
Remarks Kaolinized F-Q-M pegmatite. Many small lenses, some very rich in muscovite.
Source of information USGS, DMEA

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