ilvaite
Sign in to saveIlvaite is a sorosilicate of iron and calcium with formula: . Both manganese and magnesium substitute in the structure. Ilvaite crystallizes in the monoclinic system in black prismatic crystals and columnar masses. It is black to brownish black to gray and opaque. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.8 to 4.1. Ilvaite is structurally related to lawsonite.
Key facts
- Mineral.name
- Ilvaite
- Mineral.image
- Ilvaite-es111c.jpg
- Mineral.category
- Sorosilicates
- Mineral.formula
- Ca(Fe2+)2Fe3+[O
- Mineral.IMAsymbol
- Ilv
- Mineral.strunz
- 9.BE.07
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- P21/a
- Mineral.mohs
- 5.5–6.0
- Mineral.streak
- black
- Mineral.gravity
- 3.8–4.1
via Wikipedia infobox
Wikidata facts
- Image
- Ilvaite-Quartz-233498.jpg
Show 6 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.BE.07
- Nickel-Strunz 9th edition (updated 2009)
- 9.BE.07
- Commons category
- Ilvaite
- IMA Mineral Symbol
- Ilv
- chemical formula
- CaFe³⁺Fe²⁺₂(Si₂O₇)O(OH)
- Strunz 8th edition (series ID, updated)
- VIII/B.05
Sources (1)
via Wikidata · CC0
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Article
1 sectionsContents
- References
Ilvaite is a sorosilicate of iron and calcium with formula: . Both manganese and magnesium substitute in the structure. Ilvaite crystallizes in the monoclinic system in black prismatic crystals and columnar masses. It is black to brownish black to gray and opaque. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.8 to 4.1. Ilvaite is structurally related to lawsonite.
It occurs in contact metamorphic rocks and skarn ore deposits. It also occurs less commonly in syenites.
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