Muscovite Pegmatite
Chemical Process (Liquid-phase Growth) - Closed system under ground (Melt precipitation)
Abbreviation
MS
Classification
Muscovite class < Granitic pegmatite
Required Geological Setting
Middle-pressure metamorphic rocks
Occurrence
Pegmatite associated with lower Amphibolite facies in Barrovian-type middle-P metamorphism. Formation condition is 580-650 degree and 0.5-0.8 GPa (12-30 km depth). Pegmatites are observed as a part of S-type granites formed by partial melting or re-crystallization of sedimentary rocks. Pegmatites are usually concordant with schistose textures of host metamorphic rocks subjected to Amphibolite facies metamorphism. Pegmatites are massive and pockets are very rare. Mineral assemblages is very simple, and is composed of feldspar, quartz, muscovite, and few accessory minerals.
Mineral Assemblages
Quartz, Microcline, Albite, Muscovite, Biotite, Almandine, Spessartine, (Kyanite, Sillimanite)
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)