Sculpture
I really do stone carving as against creating something from clay or similar material.
So far I have used soapstone. The scientific name for soapstone is talc-chlorite
slate, or steatite (from the Greek stear or steatos meaning “grease”). It belongs
to a family of greenstones. When polished, soapstone looks remarkably like marble,
yet it is among the softest of all solid materials. On the Mohs scale, the standard
hardness scale for minerals, talc is graded 1, with diamonds, the hardest mineral,
numbered 10.
I have also used Anhydrite, which is a relatively common sedimentary mineral that
forms massive rock layers. It does not form directly, but is the result of dewatering
of the rock forming mineral Gypsum (CaSO4-2H2O). This loss of water produces a reduction
in volume of the rock layer and can cause the formation of caverns as the rock shrinks.
Good mineral specimens of Anhydrite were extremely rare despite its common occurrence.