Dims: 3.3 x 2.3 x 1.6" (8.4 x 5.8 x 4.1 cm)
Wt: 7.3 oz. (208 g)
Guerneville, Sonoma County, California, U.S.A.
This cabinet piece seems to be a partial rounded nodule of crystalline Actinolite. As the crystals are heavily intergrown, there are no actually complete ones visible on the piece. Intergrowth makes it difficult to study their individual forms, but there are some blades visible with appreciable monoclinic form; some of these reach nearly 1.5" (3.8 cm) in length. Their color is dark green with a hint of blue and their luster is pearly-to-vitreous. Portions of individual crystals are also appreciably transparent, though heavily fractured and included. There is no host rock present, and the rounded nature of the piece suggests that it may have undergone water-wear.