Quantico Formation - Micaceous quartzite (VAOqq;0)

Quantico Formation - Micaceous quartzite

Light-gray, fine- to medium grained quartzite and quartzose muscovite schist. Mineralogy: quartz + muscovite + plagioclase ± microcline. This lithology occurs as thin discontinuous lenses at the base of the Quantico; thin diopsidic calcsilicate layers are also found locally in the lower part of the Quantico (Pavlides, 1980).

State	Virginia
Name	Quantico Formation - Micaceous quartzite
Geologic age	Ordovician
Lithologic constituents	Major Metamorphic > Metasedimentary > Metaclastic > Quartzite Minor Metamorphic > Schist
Comments	Central Virginia Volcanic-Plutonic Belt
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	NGMDB product page for 34878
Counties	Fluvanna - Goochland - Louisa - Spotsylvania - Stafford

Quantico Formation - Micaceous quartzite

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.