آدلیت

Also known as CaMgAsO4OH

The rare mineral adelite, is a calcium, magnesium, arsenate with chemical formula CaMgAsO4OH. It forms a solid solution series with the vanadium-bearing mineral gottlobite. Various transition metals substitute for magnesium and lead replaces calcium leading to a variety of similar minerals in the adelite–duftite group.

Key facts

Mineral.name: Adelite
Mineral.category: Adelite-descloizite group
Mineral.image: Adelite.jpg
Mineral.caption: Pinkish crystal aggregates of adelite from the Franklin deposit in Ogdensburg, New Jersey
Mineral.formula: CaMg(AsO4)(OH)
Mineral.IMAsymbol: Ade
Mineral.strunz: 8.BH.35
Mineral.dana: 41.5.1.1
Mineral.system: Orthorhombic
Mineral.class: 2 2 2 – Disphenoidal
Mineral.symmetry: P212121
Mineral.color: Colourless, white, grey, bluish grey, yellowish grey, yellow, pale green, pinkish brown, brown
Mineral.habit: Elongate crystals, massive
Mineral.cleavage: None observed
Mineral.luster: Vitreous, greasy
Mineral.diaphaneity: Transparent, translucent
Mineral.mohs: 5
Mineral.gravity: 3.73 to 3.79