Schairerite

sulphate

gaylussite

Formula: Na21(SO4)7ClF6 anhydrous sulphate containing halogen
Specific gravity: 2.616
Hardness: 3½
Streak: White
Colour: Colourless
Solubility: Slowly soluble in water
Environments:

Sedimentary environments

Schairerite was found in a drill core in a lower salt bed at Searles Lake, California, USA, with gaylussite, tychite, pirssonite and hanksite.

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