Tychite

tychite

gaylussite

thenardite

northupite

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Formula: Na₆Mg₂(CO₃)₄(SO₄)
Compound carbonate
Crystal System: Isometric
Specific gravity: 2.456 measured, 2.59 calculated
Hardness: 4
Streak: White
Colour: Colourless
Solubility: Soluble in dilute acids
Environments:

Evaporite Deposits

Tychite occurs in continental evaporite deposits in northupite, or associated with gaylussite, thénardite, pirssonite and schairerite (Dana).

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