Ed Buchanan mine

Mica Mine in Mitchell county, North Carolina

Ed Buchanan mine

Workings 2 cuts, 40 and 70
Description of muscovite Brown, biotite intergrowths, books long and thin.
Production Small sheet (?), feldspar.
Wallrock Biotite gneiss
Remarks P-Pl-Q-M-B, pegmatite, coarse grained, graphic texture common; accessory vermiculite, garnet apatite.
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