Holly Corner Gneiss

Holly Corner Gneiss (Pavlides, 1980; 1990). Dark gray to black, fine- to medium-grained, strongly-foliated hornblende-biotite-rich gneiss. Mineralogy: hornblende + plagioclase + biotite + quartz + titanite; accessory minerals include zircon, epidote, microcline, chlorite; trace amounts of apatite, calcite, muscovite, and opaque minerals are present. Myrmekitic intergrowths are common.
State Virginia
Name Holly Corner Gneiss
Geologic age Proterozoic Z-Cambrian
Lithologic constituents
Metamorphic > Gneisshornblende-biotite gneiss
Comments Central Virginia Volcanic-Plutonic Belt

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 Spotsylvania - Stafford - Fredericksburg