Cassiterite — the primary tin oxide mineral (SnO2) Cassiterite Cassiterite is the chief ore of tin (SnO2). A dense, hard oxide mineral, it forms prismatic crystals and placer deposits and is the main source of metallic tin for industry and met…
Geology: study of Earth's materials, processes, and history Geology Geology examines Earth's solid materials, structures and processes — rocks, minerals, tectonics, and the events that shape planetary history and resources.
Mohs scale of mineral hardness A descriptive overview of the Mohs scale: its origin, the ten reference minerals, how the scratch test works, practical uses, and limitations for modern hardness measurement.
