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Serpentine
Serpentinite is a metamorphic rock composed predominantly of one or more serpentine group minerals formed by near to complete serpentinization of mafic or ultramafic rocks.
Colors It Comes In - Mostly comes in green, but it can also vary from white or yellowish to gray, and from brown to black. Most serpentine rocks are veiny or spotted and may exhibit areas of chatoyancy, which can appear lighter or darker depending on the viewing angle.
Fracture Pattern - granular or irregular
Shape - masses, fibrous grains, and flat-like plates. The stones often have a fine-grained and compact appearance, but they can also be granular, fibrous, or platy.
Luster - way and greasy to even silky
Texture - smooth and slippery like that of a snake
Where It Can Be Found -
The Ural Mountains of Russia
Greece and Cyprus
Mountain ranges of New Zealand, Austria, France, Italy and the U.S.
Central and northern California in the Coast Ranges, the Klamath Mountains, and in the Sierra Nevada foothills.
The Balkan Peninsula, Turkey, Cuba, and New Caledonia.
Hardness On The Mohs Scale - 2.5 To 5.5 Out Of 10
