Explore: Jadeite (petrology)

Jadeite is a pyroxene mineral with composition NaAlSi2O6. It is hard (Mohs hardness of about 6.5 to 7.0), very tough, and dense, with a specific gravity

Igneous petrology is the study of igneous rocks—those that are formed from magma. As a branch of geology, igneous petrology is closely related to volcanology

the need for a mechanism to make up the "missing" positive charge. In jadeite and aegirine, this is added by the inclusion of a 3+ cation (aluminium

the presence of the minerals glaucophane + ( lawsonite or epidote ) +/- jadeite +/- albite or chlorite +/- garnet +/- muscovite in a rock of roughly basaltic

mantle—implications from the single-crystal thermoelastic properties of jadeite". Earth and Planetary Science Letters. 543: 116345. Bibcode:2020E&PSL.54316345H

jadeite/omphacite + garnet In metapelites: phengite + garnet + kyanite + chloritoid (Mg-rich) + quartz phengite + kyanite + talc + quartz ± jadeite The

kosmochlor (also known as ureyite), varying amounts of chromium-enriched jadeite, and albite feldspar. Maw sit sit can have a refractive index ranging from

sub-metamorphic to prehnite-pumpellyite or low-temperature blueschist (jadeite-bearing) grades of metamorphism. Mélange terranes are much smaller, found

in Earth's crust and is consequently an important diagnostic tool in petrology for identifying the composition, origin and evolution of igneous rocks

phyllosilicates. At high blueschist facies pressures, albite may break down to form jadeite and quartz. Calcite will commonly pseudomorphose into aragonite under blueschist