Turmalina Chorlo
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Turmalina is a mineral with formula Na(Fe²⁺)₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH), in the Silicatos (Ciclosilicatos) group. This specimen comes from Erongo Mountains, Karibib, Erongo, Erongo Region, Namibia.
Description
Cristales negros prismáticos.
About Turmalina
Schorl is the black variety of tourmaline, typical of pegmatites.
Technical data
- Catalogue No.
- 0570
- Internal reference
- X0253
- Composition
- Na(Fe²⁺)₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
- Name
- Turmalina
- Variety
- Chorlo
- Group
- Silicatos (Ciclosilicatos)
- Mine
- Erongo Mountains
- District / Municipality
- Karibib
- Province
- Erongo
- Region
- Erongo Region
- Country
- Namibia
- Etymology
- It derives from the Sinhalese (language of Sri Lanka) 'turmali' (තුරමලි), the name used for the variously colored gems that came from the island. 'Schorl' is an old German mining term used for valueless minerals that accompanied ores.
- Quality
- Buena
- Value trend
- Estable
Related specimens
- Azurita — Namibia
- Berilo (Aguamarina) — China
- Berilo (Aguamarina) — Pakistán
- Berilo (Aguamarina) — Namibia
- Berilo (Aguamarina) — Myanmar
- Boltwoodita — Namibia
- Cordierita — España
- Cuarzo (Ahumado) — Namibia