Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
monoclinicuncommonsulfates
Glauberite
Na₂Ca(SO₄)₂
The image displays a cluster of pale, translucent, tabular glauberite crystals. Glauberite typically forms tabular to prismatic crystals, often colorless to white or yellowish.
Glauberite Physical Properties
Mohs Hardness
2.5Crystal System
monoclinicLuster
vitreousStreak Color
whiteCleavage
perfect on {110}, distinct on {001}Fracture
conchoidalSpecific Gravity
2.7Colors
colorless, white, gray, yellowish, reddish-brownTransparency
transparentType Locality
Bertram Mine (Bertram Siding Sulfate deposit; Bertram Sodium Sulphate deposits), Bertram siding, Imperial County, California, USAMineral Group
sulfatesUses
industrial (source of sodium sulfate), collectorAssociated Minerals
halite, gypsum, polyhalite, thenardite, mirabilite, celestineRarity
uncommonGeological Context
Glauberite is an evaporite mineral, commonly found in saline lakes, playas, and marine evaporite deposits. It forms in arid environments through the evaporation of water, concentrating dissolved salts.
