Kemmlitzite

Formula: (Sr,Ce)Al3(AsO4)(SO4)(OH)6

Origin of name:  Locality; Kemmlitz deposit, Saxony

 

Crystal system:  Hexagonal

Crystal class:  -3 2/m

Twinning: 

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Colour:  Light brown, colourless, cloudy brownish, zoned

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Habit:  Crystals pseudocubic rhombohedral, microscopic

Hardness:  5.5

Specific gravity:  3.63

Cleavage:  1; basal indistinct

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