Ultramafic Rocks

Small pods and plutons of gray to greenish-gray, medium- to coarse-grained, locally porphyroblastic schist and granofels. Mineralogy: tremolite-actinolite + chlorite ± talc ± plagioclase ± quartz; locally contains relict olivine.
State Virginia
Name Ultramafic Rocks
Geologic age Proterozoic
Lithologic constituents
Major
Igneous > Plutonic > Ultramafic
Comments Central Virginia Volcanic-Plutonic Belt; Central Piedmont; Eastern Piedmont
References

Virginia Division of Mineral Resources, 1993, Geologic Map of Virginia: Virginia Division of Mineral Resources, scale 1:500,000.

Virginia Division of Mineral Resources, 2003, Digital Representation of the 1993 Geologic Map of Virginia, Publication 174, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, scale 1:500,000.

NGMDB product
Counties Amelia - Appomattox - Buckingham - Pittsylvania