A fine example of Sterling Hill actinolite in intergrown plumose masses of fibrous to acicular, pale grayish green crystals. In 1979 this specimen was obtained by John Kolic from miner Randy Ottens and entered the Kolic collection as no. 245; thirty-five years later, in early 2014, it became part of the collection of the Sterling Hill Mining Museum.
Identifier: ACT8a Locality: 1015 stope, 180 level, Sterling mine, Ogdensburg Specimen size: 12 x 7.5 x 5.5 cm Photo credit: Earl R. Verbeek
