Gypsum
Inglaterra Mine, Francisco Portillo, West Camp, Santa Eulalia Mining District, Aquiles Serdán Municipality, Chihuahua, Mexico
13.0 x 11.3 x 6.4 cm. This is an aesthetic, jackstraw cluster of glassy and gemmy, colorless gypsum crystals, to 8.5 cm in length. The crystals are so limpid that the matrix can be seen through them. They have internal phantoms, adding character, and this also makes them distinct from the modern specimens here. The largest crystal is also doubly ...
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