Moulton mine

Mica Mine in Avery county, North Carolina, this site also known as Big Meadow

Moulton (Big Meadow) Mine

Principal periods worked 1880-90, 1943-44, 1955.
Workings Cut 250 long, 50 deep; drifts, prospect pits.
Description of muscovite Green, soft, haircracks, ruled, clay stained.
Production Moderate sheet
Shape Irregular branching.
Size 1-8 T, 180 L
Strike NW
Dip NE., SW
Relation to wallrock Partly concordant
Wallrock Mica gneiss
Extent of weathering Saprolite (50 ft)
Remarks Kaolinized F-Q-M- pegmatite. Mining hampered by large flow of water in cut.
Source of information USGS; OF

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