Editorial material shelf
Oxide mineral species.
Keep each chapter’s scientific identity: a family, species, variety, trade label, rock and fossil are different kinds of names.
Mineral species
Spinel offers red, pink, blue and other colors in a mineral distinct from corundum. Its history includes famous stones once called ruby before modern gem identification separated them.
Robert M. Lavinsky · CC BY-SA 3.0 · Display crop
Mineral species
Cuprite is a copper oxide that can appear deep red, brown or almost black. Thin or transparent areas may show a red that is less obvious across a thick specimen.
Robert M. Lavinsky · CC BY-SA 3.0 · Display crop
Mineral species
Cassiterite is tin oxide, often brown or black with a strong reflective surface. Transparent portions and well-developed crystals make selected specimens interesting beyond their industrial importance.
CarlesMillan · CC BY-SA 3.0 · Display crop