Ruben Green mine (See also Charlies Ridge mine)

Mica Mine in Avery county, North Carolina

Reuben Green mine (see also Charles Ridge mine)

Principal periods worked 1890, WWII
Workings Adit and incline 500, old, caved works.
Description of muscovite Light green, common "A" structure, minor ruling, bending, cracks, inclusions.
Production Large sheet
Shape Irregular, lenses.
Size 0-5 T
Strike NW
Dip SW
Plunge SE
Relation to wallrock Partly concordant
Wallrock Mica gneiss
Extent of weathering Unweathered
Remarks Pl-Q-M pegmatite, medium grained; accessory garnet. Pegmatite layered, contains streaks of fine grained muscovite and quartz. Northeast of Charles Ridge mine.
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