Chocolate dogtooth calcite, large Stalactitic chalcedony (If you want more than

(If you want more than one set

this pair of long straight points is completely coated in a dull mineral crust

and small dark spots nearby

The two larger points are tipped with bubbly black hematite

Chocolate dogtooth calcite, large Stalactitic chalcedony (If you want more thanLocale: Santa Eulalia, Chihuahua, Mexico Approx size: 5 x 3 x 1. 75" Approx weight: 372g 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 dark brown appearance from iron oxides; a layer of hematite included calcite is deposited on the surface during a later phase of