Lineback mine

Mica Mine in Avery county, North Carolina

Lineback mine

Principal periods worked 1916
Workings 19 shafts, adit, prospect pits in area 100 by 500.
Description of muscovite Stained
Shape Tabular (?)
Strike NE
Dip NW
Relation to wallrock Concordant(?)
Wallrock Hornblende gneiss
Extent of weathering Weathered
Remarks No exposures, shafts less than 80 ft deep. Heavy flow of water. All workings inaccessible.
Source of information USGS

Geographic context

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