Kyanite is a typically blue aluminosilicate mineral, found in aluminium-rich metamorphic pegmatites and sedimentary rock. It is the high pressure polymorph of andalusite and sillimanite, and the presence of kyanite in metamorphic rocks generally indicates metamorphism deep in the Earth's crust. Kyanite is also known as disthene or cyanite.[5]
Kyanite is strongly anisotropic, in that its hardness varies depending on its crystallographic direction. In kyanite, this anisotropism can be considered an identifying characteristic, along with its characteristic blue color. Its name comes from the same origin as that of the color cyan, being derived from the Ancient Greek word κύανος. This is typically rendered into English as kyanos or kuanos and means "dark blue."
Kyanite is used as a raw material in the manufacture of ceramics and abrasives, and it is an important index mineral used by geologists to trace metamorphic zones.
of kyanite in metamorphic rocks generally indicates metamorphism deep in the Earth's crust. Kyanite is also known as disthene or cyanite. Kyanite is strongly...
Kyanite Andalusite Sillimanite Sillimanite or fibrolite is an aluminosilicate mineral with the chemical formula Al2SiO5. Sillimanite is named after the...
province of Guadalajara, not Andalusia. Andalusite is trimorphic with kyanite and sillimanite, being the lower pressure mid temperature polymorph. At...
xAl2O3·ySiO2·zH2O. It is known as E number E559. Kyanite Andalusite Sillimanite Andalusite, kyanite, and sillimanite are the principal aluminium silicate...
are a group of three minerals – kyanite, andalusite, and sillimanite – which share the chemical formula Al2SiO5. Kyanite is triclinic, while andalusite...
mylonites, while feldspar and garnet are resistant to mylonitization. Kyanite Andalusite Sillimanite Phase change metamorphism is the creating of a new...
More than 72 million tons of other non-fuel resources, such as slate, kyanite, sand, or gravel, were also mined in Virginia in 2020[update]. The largest...
series but has approximately 1 kbar more pressure so these rocks form kyanite "Regional metamorphism". Tulane University. Retrieved 23 August 2019. Philpotts...
products) and mineral-based (asbestos, coal, chromite, iron ore, mica, and kyanite). Having once constituted a segment of the ancient continent of Gondwanaland...
a secondary mineral resulting from the alteration of topaz, feldspar, kyanite, etc. It is characteristic of peraluminous rock, in which the content of...
ultra-high pressures. It has the characteristic mineral assemblage of kyanite + talc, responsible for its white colour. The name was introduced in 1973...
of unusual size) of distinctive minerals, such as garnet, staurolite, kyanite, sillimanite, or cordierite. Because schists are a very large class of...
chemical environment. For example, at atmospheric pressure, the mineral kyanite transforms to andalusite at a temperature of about 190 °C (374 °F). Andalusite...
reaction, the ratio of talc and kyanite depends on aluminium content, with more aluminous rocks favoring production of kyanite. This is typically associated...
portal Amber Amethyst Aqeeq Aquamarine Citrine Diamond Emerald Garnet Geode Kyanite Labradorite List of minerals – List of minerals with Wikipedia articles...
associated with kyanite, of which it is an alteration product. It also occurs as hydrothermal deposits. Typical associated minerals include: kyanite, andalusite...
Zawar, Rikahbdev serpentinite, talc, pyrophyllite, asbestos, apatite, kyanite and beryl. Mining of copper and other metals in the Aravalli range dates...
rocks like mica schists, associated with minerals such as staurolite, kyanite, andalusite, and others. Almandine has nicknames of Oriental garnet, almandine...
of intermediate to high grade. It occurs with almandine garnet, micas, kyanite; as well as albite, biotite, and sillimanite in gneiss and schist of regional...
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