alluaivite
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Alluaivite is a rare mineral of the eudialyte group, with complex formula written as . It is unique among the eudialyte group as the only titanosilicate (other representatives of the group are usually zirconosilicates). The two dual-nature minerals of the group, being both titano- and zirconosilicates, are labyrinthite and dualite. They both contain alluaivite module in their structures. Alluaivite is named after Mt. Alluaiv in Lovozero Tundry massif, Kola Peninsula, Russia, where it is found in ultra-agpaitic, hyperalkaline pegmatites.
Wikidata facts
- Named after
- Alluaiv Mountain
Show 7 more facts
- Nickel-Strunz 9th edition (updated 2009)
- 9.CO.10
- type locality (geology)
- Alluaiv Mountain
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.CO.10
- crystal system
- trigonal crystal system
- streak color
- white
- IMA Mineral Symbol
- Aav
- chemical formula
- Na₁₉(Ca,Mn²⁺)₆(Ti,Nb)₃Si₂₆O₇₄Cl·2H₂O
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Encyclopedic overview
3 sectionsContents
- Notes on chemistry
- Occurrence and association
- References
Alluaivite is a rare mineral of the eudialyte group, with complex formula written as . It is unique among the eudialyte group as the only titanosilicate (other representatives of the group are usually zirconosilicates). The two dual-nature minerals of the group, being both titano- and zirconosilicates, are labyrinthite and dualite. They both contain alluaivite module in their structures. Alluaivite is named after Mt. Alluaiv in Lovozero Tundry massif, Kola Peninsula, Russia, where it is found in ultra-agpaitic, hyperalkaline pegmatites.
==Notes on chemistry== Alluaivite contains relatively high amounts of admixing strontium, cerium, potassium, and barium, with lesser amounts of substituting lanthanum and zirconium.
Excerpted from Wikipedia’s “alluaivite” article, available under the CC BY-SA 4.0 licence.