tsavorite
Sign in to saveTsavorite or tsavolite is a variety of the garnet group species grossular, a calcium-aluminium garnet with the formula Ca3Al2Si3O12. Trace amounts of vanadium or chromium provide the green color.
Key facts
- Mineral.name
- Tsavorite
- Mineral.category
- Nesosilicate
- Mineral.boxbgcolor
- 338760
- Mineral.boxtextcolor
- FFFFFF
- Mineral.image
- Graphite-Grossular-Strontiumapatite-d06-195a.jpg
- Mineral.caption
- Tsavorite garnet on matrix of silvery black graphite and a minor blue apatite
- Mineral.formula
- Ca3Al2Si3O12
- Mineral.color
- Light to deep green
- Mineral.system
- Cubic
- Mineral.mohs
- 7.0–7.5
- Mineral.refractive
- 1.740
- Mineral.opticalprop
- Single refractive
- Mineral.dispersion
- 0.028
- Mineral.gravity
- 3.60–3.68
via Wikipedia infobox
Wikidata facts
- Image
- Grossular-4jg61a.jpg
Show 2 more facts
- Commons category
- Tsavorite
- density
- 3.62
Sources (2)
via Wikidata · CC0
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Article
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Tsavorite or tsavolite is a variety of the garnet group species grossular, a calcium-aluminium garnet with the formula Ca3Al2Si3O12. Trace amounts of vanadium or chromium provide the green color.
In 1967, British gem prospector and geologist Campbell R. Bridges discovered a deposit of green grossular in the mountains of Simanjiro District of Manyara Region of north-east Tanzania in a place called Lemshuko, away from Komolo, the first village. The specimens he found were of very intense color and of high transparency. The find interested the gem trade, and attempts were made to export the stones, but the Tanzanian government did not provide permits.