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Cassiterite (Photo) [abbr. Cst ]

Year of discovery: 1832 (World), 1875 (Japan)

Locality list: 207 localities of cassiterite

• SnO₂
• [Sn⁴⁺][O₂]^4-

• Class: Rutile group
• Class: Oxide
• Soluble in: HCl (Slightly)
• Formed by alteration of Nordenskiöldine (Nordenskioldine).

• Sn => Ge: Argutite
• Sn => Mn: Pyrolusite (β), Ramsdellite (γ), Akhtenskite (ε)
• Sn => Ti: Rutile, Anatase, Brookite
• Sn => Pb: Scrutinyite (α), Plattnerite
• Sn => Si: Quartz (α), β-Quartz (β), Tridymite, Cristobalite, Coesite, Stishovite, Mogánite (Moganite)
• Sn => V: Paramontroseite
• Sn => Mo: Tugarinovite
• Sn => U: Uraninite
• Sn => Th: Thorianite
• Sn => Ce: Cerianite-(Ce)
• Sn => Se: Downeyite
• Sn => Zr: Baddeleyite
• Sn => Te: Tellurite, Paratellurite

• Color: Brown-Pale brown
• Streak: Pale brown
• Luster: Adamantine
• Diaphaneity: Transparent-Opaque

• Habit: Short Prismatic

• Cleavage: Imperfect on {100} (2 planes), Indistinct on {110} (2 planes)
• Hardness: 6-7
• Density: 7.0

• System: Tetragonal
• Group: 4/mmm, P4₂/mnm
• Lattice: a=4.7, c=3.2

Etymology: kassiteros (tin) in Greek