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Potarite
Year of discovery: 1926 (Kaietur Falls, Guyana), 1999 (Japan)
Locality list: A locality of potarite
- Color: Silver white
- Streak: Silver white
- Luster: Metallic
- Diaphaneity: Opaque
- Habit: Octahedral, Fibrous
- Aggregate: Almost columnar
- Cleavage: No
- Hardness: 3.5
- Density: 14.9
- System: Tetragonal
- Group: 4/m2/m2/m, P4/mmm
- Lattice: a=3.0, c=3.7
Etymology: Potaro river in Guyana