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Charles Rock mine

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Mica Mine in Avery county, North Carolina

Charles Rock mine

Principal periods worked WWII
Workings 2 cuts, each 20
Description of muscovite Light green, tied, cracked, small
Production Small sheet
Shape Tabular
Size 15 T, 100 L
Strike NE
Dip SE
Relation to wallrock Concordant
Wallrock Hornblende gneiss
Extent of weathering Unweathered
Remarks Pl-Q-M pegmatite, fine to medium grained; accessory sericite, biotite, garnet, allanite.
Source of information USGS

Geographic context

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Geologic map unit -82.047207649, 36.05628412
Nearby scientific data Find additional scientific data near this location

Abbreviations

Principal periods worked
WWI World War I
WWII World War II
int intermittent
Production
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