Minerals identify

Know how to recognize them

Aphthitalite

Sulfate mineral

Aphthitalite is a potassium sulfate mineral with the chemical formula: (K,Na)3Na(SO4)2.

It was first described in 1835 for an occurrence on Mount Vesuvius. The name is from the Greek άφθητος, "unalterable", and άλας, "salt", for its stability in air. incrustations in volcanic environments, as small crystals and masses in evaporite It occurs associated with thenardite , sylvite, syngenite , borax in evaporites; and with syngenite, whitlockite and gypsum

Identification

Color of mineral

White
Grey
Blue
Green

Mohs scale ( mineral hardness )

3

Density ( specific gravity )

1.487
1.492

Luster ( interacts light )

Resinous
Vitreous

Crystal ( diaphaneity )

Trigonal