kyanite - определение. Что такое kyanite
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Что (кто) такое kyanite - определение

NESOSILICATE MINERAL
Cyanite; Disthene; Kianite; Cyanites; Kayonit
  • Kyanite within quartz, [[Hunterian Museum]], Glasgow

kyanite         
['k???n??t]
¦ noun a blue or green mineral consisting of aluminium silicate, used in heat-resistant ceramics.
Origin
C18: from Gk kuanos, kuaneos 'dark blue' + -ite1.
Cyanite         
·noun A mineral occuring in thin-bladed crystals and crystalline aggregates, of a sky-blue color. It is a silicate of aluminium.
Disthene         
·noun Cyanite or kyanite;
- so called in allusion to its unequal hardness in two different directions. ·see Cyanite.

Википедия

Kyanite

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.

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.