Mineral iden8ca8on cleavage the breakage or spliung of

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Unformatted text preview: they absorb or transmit light. Pyrite Mineral Iden8fica8on –  Crystal form is useful for the iden8fica8on of minerals that typically show well- developed crystals. Mineral Iden8fica8on Cleavage: the breakage or spliUng of mineral crystals along one or more smooth planes Fracture refers to the irregular breakage of a mineral Cleavage in one direction Cleavage plane Micas—biotite and muscovite Cleavage in two directions at right angles Potassium feldspars, plagioclase feldspars Cleavage in three directions at right angles Halite, galena Cleavage in three directions, not at ri...
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