Chelkarite

Formula:  CaMgB2O4Cl2 . 7H2O

Origin of name:  Locality; Chelkar, Kazakhstan

 

Crystal system:  Orthorhombic

Crystal class:  2/m 2/m 2/m

Twinning:

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Colour:  Colourless

Diaphaneity:  Transparent

Luster:

Habit:  Crystals long prismatic, flattened

Hardness:

Specific gravity:

Cleavage:  1; Perfect parallel to elongation

Tenacity:

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