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Riebeckite
Type Locality
Socotra Island, Adan Governorate, Yemen
Mineral Data
◻[Na
2
][Fe
2+
3
Fe
3+
2
]Si
8
O
22
(
Strunz:
9.DE.25
Physical Properties
Hardness:
5.0 - 5.5
Tenacity:
brittle
Synonyms
Synonyms:
Riebeckite -
