Dims: 3.3 x 2.7 x 1.7" (8.4 x 6.9 x 4.3 cm)
Wt: 3.96 oz. (112.3 g)
unknown (likely Mexico)
Like the previous specimen, this piece consists of a crust of intergrown calcite crystals that is the matrix for scores of tiny Fluorite cubes. These cubes do not exceed 0.1" (3 mm) along an edge- most are considerably smaller than that. Most of the exposed crystals are damaged, but not very many of them are exposed. The rest are intact and in good condition, showing a somewhat warped cubic form. However, all appear to be rather heavily intergrown and possibly trapped in a matrix of colorless, transparent calcite. These rest on a layer of what might be natrolite, as the short, radiating crystals are fine and fibrous. All of this rests on a thin, rough brown crust that I cannot quite identify. This piece and the others like it in our selection are quite mysterious.