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Pyrophanite (Photo) [abbr. Pph ]
Year of discovery: 1890 (Harstigen mine, Sweden), 1939 (Japan)
Locality list: 61 localities of pyrophanite
- Color: Dark red, Yellowish green
- Streak: Yellowish brown
- Luster: Metallic
- Diaphaneity: Opaque
- Cleavage: Perfect on {0221} (3 planes), Good on {1012} (3 planes)
- Hardness: 5-6
- Density: 4.5
- System: Trigonal
- Group: (-3), R(-3)
- Lattice: a=5.1, c=14.3