Puncheon Camp mine

Mica Mine in Avery county, North Carolina

Puncheon Camp mine

Workings Cut 200
Description of muscovite Small, mostly scrap
Production Feldspar
Shape Tabular
Size 35 T
Dip Flat
Relation to wallrock Discordant(?)
Wallrock Interlayered hornblende and biotite gneiss
Remarks P-Pl-Q-M pegmatite; accessory epidote, vermiculite. Pegmatite cut by assault dikes and epidote veinlets.
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