Provenite

Teófilo Otoni

AreaDraft data

17.8578° S, 41.5050° W · Region only

Aquamarine from Minas Gerais, Brazil, with photos of specimens from this locality.

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Minerals found here

Aquamarine

Aquamarine at Teófilo Otoni

Gem aquamarine crystal about 8 cm long from Teófilo Otoni, Minas Gerais, Brazil.
Gem aquamarine crystal about 8 cm long from Teófilo Otoni, Minas Gerais, Brazil.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Deep blue, slightly etched transparent aquamarine crystal from Teófilo Otoni, Minas Gerais, Brazil.
Deep blue, slightly etched transparent aquamarine crystal from Teófilo Otoni, Minas Gerais, Brazil.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Formula
Be₃Al₂Si₆O₁₈
Morphology
Transparent gem crystals, some slightly rounded and etched
Typical size
About 8 cm
Color / luster
Deep blue, transparent
Surface features
Some crystals etched
Availability
Unknown

Sources: SRC-776 SRC-777 SRC-266

About Aquamarine →

Geology of the locality

Setting
Gem pegmatite district mined for aquamarine, topaz, brazilianite and quartz
Region
Minas Gerais
Country
Brazil

City in the Mucuri valley and major gem-trading centre; labels give only the city, so the coordinate (Wikipedia) stands for the surrounding pegmatite district.

Sources: SRC-776

Sources

  1. SRC-776 · Website
    Teófilo OtoniWikipedia contributors · Wikipedia
  2. SRC-777 · Website
    File:Beryl-66355.jpgRobert M. Lavinsky · Wikimedia Commons
  3. SRC-266 · Book
    Handbook of Mineralogy - BerylAnthony, J.W.; Bideaux, R.A.; Bladh, K.W.; Nichols, M.C. · 2001 · Mineralogical Society of America / Mineral Data Publishing

Draft data from the Provenite workbook. Check entries against the cited sources before relying on them. Photos are open-licence images from Wikimedia Commons; the author and licence are given with each photo.