Polyhalite

Crystal system- Triclinic 

Individual euhedral crystals are extremely rare in nature. It typically exhibits a massive granular or fibrous growth habit.

Mineral class- Sulfate
It specifically categorized as a hydrous multiple Sulfate of potassium,calcium and magnesium

Hardness- 3.5 on the MOHs scale

Rock formation- Sedimentary
It forms via evaporation of hyper-saline marine brines within vast evaporite sequences.
As ancient shallow seas dried up under hot,arid conditions, mineral salts precipitated out in successive layers.

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