Burkeite

sulphate

gaylussite

Formula: Na4(SO4)(CO3) compound sulphate
Specific gravity: 2.57
Hardness: 3Æ
Streak: White
Colour: White, light buff, grayish; colourless in transmitted light
Solubility: Soluble in cold water
Environment:

Sedimentary environments

Burkeite occurs in continental evaporite deposits. At Searles Lake, California, USA, it is associated with gaylussite, trona, sulphohalite, borax and northupite. At the Konya Basin, Central Anatolia, Turkey, burkeite occurs with halite and trona (Dana).

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