Chocolate dogtooth calcite, large Picture jasper with some showing a lighter

with some showing a lighter golden brown coloration

and a bit of clarity despite the white inclusions responsible for the crazed (crackled) pattern that radiates out from the center of each face

The calcite formed a chunky druzy of icy colorless intersecting rhombohedral crystals that almost appear cubic in areas

with selenite and light-to-orange-yellow siderite on a heavy base composed of several minerals

some are masquerading as dino doo

Chocolate dogtooth calcite, large Picture jasper with some showing a lighterLocale: Santa Eulalia, Chihuahua, Mexico Approx size: 5. 5 x 3. 5 x 1. 75" Approx weight: 542g (a bit over 1 lb) Known by the trade name "chocolate dogtooth calcite," this type of calcite from the famed Santa Eulalia mining district grows in hedgehog clusters of sharp dogtooth (scalenohedral) crystals. The variety gets its distinctive opaque brown appearance from iron oxides; a layer of hematite included calcite is deposited on the surface during a