Wikidata facts
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- Mohs' hardness
- 7.5
- Nickel-Strunz 9th edition (updated 2009)
- 9.AD.25
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.AD.25
- IMA Mineral Symbol
- Mmt
- chemical formula
- Ca₃(Ti,Fe²⁺,Fe³⁺)₂((Si,Fe³⁺)O₄)₃
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