Rare-element Pegmatite (Albite)
Chemical Process (Liquid-phase Growth) - Closed system under ground (Melt precipitation)
Abbreviation
REL-Li
Classification
Albite type < Lithium subclass < (LCT family) < Rare-element class < Granitic pegmatite
Required Geological Setting
Occurrence
Pegmatites formed by fractional crystallization of S-type granite magma associated with upper Greenschist facies to Amphibolite facies in Barrovian-type middle-P metamorphism. The rare-element class pegmatites emplace at shallow depth. The albite type pegmatites are rare and are not understood well. Pegmatites are composed of fine to saccharoidal albite and less abundant quartz with minor K-feldspar, spodumene, and lepidolite. Pegmatites are massive to layered with dyke-like outer shape, and pockets are very rare. The albite type is characterized by abundant Na.
Mineral Assemblages (Major minerals)
Quartz, Albite, (Orthoclase, Microcline)
Mineral Assemblages
Columbite-(Fe), Tantalite-(Fe), Beryl, Spodumene, Lepidolite, (Cassiterite)
Localities
Related Occurrences
- Pegmatite (Abyssal)
- Pegmatite (Muscovite)
- Pegmatite (Muscovite-Rare element)
- Pegmatite (Rare element, Allanite)
- Pegmatite (Rare element, Euxenite)
- Pegmatite (Rare element, Gadolinite)
- Pegmatite (Rare element, Titanium)
- Pegmatite (Rare element, Beryl)
- Pegmatite (Rare element, Phosphate)
- Pegmatite (Rare element, Spodumene)
- Pegmatite (Rare element, Petalite)
- Pegmatite (Rare element, Lepidolite)
- Pegmatite (Rare element, Elbaite)
- Pegmatite (Rare element, Amblygonite)
- Pegmatite (Rare element, Albite-Spodumene)
- Pegmatite (Rare element, Albite)
- Pegmatite (Miarolitic, REE)
- Pegmatite (Miarolitic, Li)
- Pegmatite (Gabbro)