Dims: 1.1 x 0.7 x 0.7" (2.9 x 1.8 x 1.8 cm)
Wt: 0.5 oz. (15 g) w/ specimen box
Mina Ojuela, Mapimi, Durango, Mexico
The limonite base of this thumbnail specimen is partly covered with a massive Plattnerite crust. This crust shows no evidence of inherent crystal form and has a gray color and submetallic luster where exposed. It is mostly covered by a druse of tiny calcite crystals which have a brown-black color and show good trigonal form- one small cluster is large enough to be seen without magnification. A few nodules of reniform limonite/hematite are also visible on the crust. The piece is affixed inside its thumbnail box with a removable putty.