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Joe mine

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Mica Mine in Avery county, North Carolina

Joe mine

Principal periods worked 1954
Workings Cut 90, adit
Description of muscovite Stained, bent, cracked
Production Small scrap
Shape Tabular
Size 2-5 T
Strike NE
Dip SE
Relation to wallrock Concordant
Wallrock Hornblende gneiss, biotite alteration
Extent of weathering Weathered (30 ft).
Remarks Kaolinized P-Pl-Q-M pegmatite; accessory biotite, garnet.
Source of information DMEA

Geographic context

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Geologic map unit -82.055551078, 36.067228099
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