Tamarugite

Tamarugite (NaAl(SO4)2·6H2O) is a colorless monoclinic sulfate mineral.

Deposits containing tamarugite are geographically dispersed with occurrences of the mineral on all seven continents (Antarctica, Oceania, North America, South America, Europe, Asia, Africa). The mineral's name comes from the Tamarugal Pampa locality in Chile. It is also known as lapparentite.