Pinnacle Formation - amphibolitic greenstone member (VTCAZpva;0)

Pinnacle Formation - amphibolitic greenstone member

Calcite-biotite-sphene-albite-actinolite-epidote-chlorite greenstone with dark-green porphyroblasts of actinolitic hornblende. Cover rocks of the Lincoln Mountain massif and northwestern flank of the Green Mountain massif.

State	Vermont
Name	Pinnacle Formation - amphibolitic greenstone member
Geologic age	Cambrian and Neoproterozoic
Lithologic constituents	Major Metamorphic > Metaigneous > Greenstone (Amphibolite)Calcite-biotite-sphene-albite-actinolite-epidote-chlorite greenstone with dark-green porphyroblasts of actinolitic hornblende.
References	Ratcliffe, N.M., Stanley, R.S., Gale., M.H., Thompson, P.J., and Walsh, G.J., 2011, Bedrock geologic map of Vermont: U.S. Geological Survey Scientific Investigations Map 3184, 3 sheets, scale 1:100,000. https://pubs.er.usgs.gov/publication/sim3184
NGMDB product	NGMDB product page for 96860
Counties	Chittenden - Franklin

Pinnacle Formation - amphibolitic greenstone member

Ratcliffe, N.M., Stanley, R.S., Gale., M.H., Thompson, P.J., and Walsh, G.J., 2011, Bedrock geologic map of Vermont: U.S. Geological Survey Scientific Investigations Map 3184, 3 sheets, scale 1:100,000.