Ledford prospect

Mica Prospect in Mitchell county, North Carolina

Ledford prospect

Principal periods worked 1956
Workings Cut 150
Description of muscovite Ruby, biotite intergrowths, stained, haircracks.
Production Small sheet
Shape Lenses
Size 1-2 T, 2-20 L
Strike NE
Dip NW
Relation to wallrock Concordant
Wallrock Mica gneiss
Extent of weathering Weathered
Remarks Pl-Q-M pegmatite; accessory biotite.
Source of information USGS

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