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Narrow Streak mine

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Mica Mine in Avery county, North Carolina

Narrow Streak mine

Principal periods worked 1909, WWII
Workings Cut, 35; 3 prospect pits
Description of muscovite Light brown, reeved, haircracked, small
Production Small sheet
Shape Tabular
Size 6 T
Strike NE
Dip SE
Relation to wallrock Concordant
Wallrock Mica gneiss
Extent of weathering Unweathered
Remarks Pl-Q-P-M pegmatite.
Source of information USGS, CMC

Geographic context

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Geologic map unit -82.044079134, 36.046869455
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