Elbaíta Verdelita
Elbaíta is a mineral with formula Na(Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, in the Silicatos (Ciclosilicatos) group. This specimen comes from Minas Gerais, Sudeste, Brasil and joined the Terrium collection in 2021.
Description
Slender, straight prism, deep green and translucent, with pronounced longitudinal striation. Natural termination with minor micro-abrasions and a complete base. Clean appearance and slender proportions.
About Elbaíta
Elbaite is a complex borosilicate of lithium, sodium and aluminium. It forms elongate prisms with longitudinal striation and green hues associated with traces of iron in granitic pegmatites.
About the locality
Minas Gerais is a classic pegmatite region, known for well-formed green tourmalines with high crystal clarity.
Technical data
- Catalogue No.
- 0348
- Composition
- Na(Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
- Name
- Elbaíta
- Variety
- Verdelita
- Group
- Silicatos (Ciclosilicatos)
- Category
- Estélites
- Province
- Minas Gerais
- Region
- Sudeste
- Country
- Brasil
- Size (cm)
- 2.4 x 0.6 x 0.4
- Weight
- 1.6 g
- Acquired
- 2021
- Ex-collection
- Diego Navarro
- Etymology
- From the German "Turmalin", derived from the Sinhalese "turmali", a name historically applied to mixtures of multicoloured crystals.
- Quality
- Buena
- Value trend
- Estable
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