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Charlies Ridge mine (See also Ruben Green mine)

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Mica Mine in Avery county, North Carolina

Charles Ridge mine. (See also Ruben Green mine)

Principal periods worked Int. 1882-1936, WWII, 1950's.
Workings Several adits and inclines, numerous stopes. Maine, inclines 750.
Description of muscovite Pale green, common "A" structure, minor ruling, bending, haircracks, mineral inclusions.
Production Large sheet
Shape Lenses tongues.
Size 1-20 T, 100-650 L, 15-40 lateral width.
Strike NW
Dip SW
Plunge SE
Relation to wallrock Partly concordant
Wallrock Mica gneiss and schist
Extent of weathering Weathered (15 ft).
Remarks Pl (An22)-Q-M-P pegmatite, medium grained; accessory garnet, apatite, epidote. Pegmatite foliated in part. Cut by faults. Main pegmatite split by gneiss inclusions.
Source of information USGS, Sterrett (1923, p. 182), OF.

Geographic context

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Geologic map unit -82.034339141, 36.024530945
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