- Datolite, Danburite, Chalcopyrite
- Small Cabinet, 8.1 x 6.4 x 4.4 cm
- Charcas, Mun. de Charcas, San Luis Potosi, Mexico
From Charcas, a specimen of large, lustrous crystals of datolite, with crystals of white danburite and little golden chalcopyrites. The largest of the crystals measures over 4 cm in two directions! They have a light greenish-gray color; the faces SHINE. Ex. Dave Stoudt Collection.