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Varlamoffite
Year of discovery: 1946 (Kalima, Congo (Zaïre)), 1970 (Japan)
Locality list: 2 localities of varlamoffite
- SnO2
- (Sn4+,Fe3+)(O,OH)2
- [Sn4+][O2]4-
- Class: Oxide
- Questionable if this is an independent species.
- Color: Yellow, Brown
- Streak: Pale yellow
- Luster: Waxy
- Diaphaneity: Translucent-Opaque
- Cleavage: No
- Hardness: 6-6.5
- Density: 2.6
- System: Tetragonal
- Group: 4/mmm, P41/mnm
- Lattice: a=4.7, c=3.1