Chocolate dogtooth calcite, small Sandstone The coffee-brown staining may be

The coffee-brown staining may be iron

they are concretions formed out of beautiful tones of red sandstone material

Approx dimensions: 2 x 1

Montenegro Clowns are one of my favorites

Locality: Northern Morocco

Chocolate dogtooth calcite, small Sandstone The coffee-brown staining may beLocale: Santa Eulalia, Chihuahua, Mexico Approx size: 22. 5" Approx weight: 45120g 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 growth.