Magnesite - Magnesium Carbonate
MgCO3
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Identification
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Color
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Colorless
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Crystal system
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Trigonal - Hexagonal Scalenohedral H-M Symbol32/m Space Group: R3c
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Lattice constant
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arh = 5.85 Å a` = 103 20` ahex = 4.59 Å chex = 14.87 Å
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Cleavage
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[1011] perfect
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Mohs scale hardness
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3.5 - 4.5
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Diaphaneity
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Transparent to translucent
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Specific gravity
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3.0 - 3.2
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Optical properties
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Unixial (-)
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Refractive index
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nಎ= 1.508 - 1.510 nԑ= 1.700
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