10/17/2023 0 Comments Topaz texture effects 2 keyIn kyanite, this anisotropism can be considered an identifying characteristic, along with its characteristic blue color. Kyanite is strongly anisotropic, in that its hardness varies depending on its crystallographic direction. Kyanite is also known as disthene or cyanite. 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 a typically blue aluminosilicate mineral, found in aluminium-rich metamorphic pegmatites and sedimentary rock. Trichroic, colorless to pale blue to blue perfect imperfect with 79° angle between ![]() Blue, white, rarely green, light gray to gray, rarely yellow, pink, orange, and black, can be zoned
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