Pitman prospect

Mica Prospect in Avery county, North Carolina

Pitman prospect

Principal periods worked 1954
Workings 150 diameter
Description of muscovite Ruby, hard, tied, stained, spent
Production Small sheet
Shape Pinch and swell.
Size 1-15 T
Dip Flat
Relation to wallrock Concordant
Wallrock Biotite gneiss
Remarks P-Po-Q-B-M pegmatite, medium to coarse-grained; graphic texture, and; accessory sulfides. Biotite in strips 1.5 ft long.
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