Chocolate dogtooth calcite, large Wulfenite Note: I was able to

Note: I was able to remove the chip of matrix between the two larger formations (apparent in images 1 and 3) so it is less distracting from the aesthetics of the piece

This point looks quite light colored from some angles

The matrix is a soft weathered iron oxide referred to as gossan

There are quite a few colors and varieties of picture jasper

Chocolate dogtooth calcite, large Wulfenite Note: I was able toLocale: Santa Eulalia, Chihuahua, Mexico Approx size: 4 x 3 x 2. 5" Approx weight: 652g (about 1 1 3 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 later