Intergrown radiating masses of pale green, fibrous actinolite with pale gray calcite. Originally part of the famed SPEX/Gerstmann collection, it is now on display in the Franklin Mineral Museum under catalog number FMM-959.
Identifier: ACT1a Locality: Sterling mine, Ogdensburg Specimen size: 10 x 8 x 6 cm Photo credit: Earl R. Verbeek
