Dims: 2.0 x 1.9 x 1.1" (5.1 x 4.8 x 2.8 cm)
Wt: 2.3 oz. (66.1 g)
Betafo-war, Fort Dasphin, Madagascar
This large thumbnail specimen consists of another chunk of heavily-fractured, amorphous Thorogummite in a thin calcite matrix. There may be some subtle evidence of crystal form, but it is beyond my ability to detect. All surfaces are uneven or slightly curved and possess a dull to moderate vitreous luster. The Thorogummite has a color that ranges from dark olive green to brown to black, and ranges from opaque to transparent according to the size and coloration of the piece. The calcite matrix that holds the pieces together is massive and has a milky white coloration and a dull waxy luster.