Kalpana Kalpana (Editor)

Augelite

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Category
  
Phosphate mineral

Strunz classification
  
8.BE.05

Space group
  
C2/m

Formula (repeating unit)
  
Al2(PO4)(OH)3

Crystal system
  
Monoclinic

Augelite

Crystal class
  
Prismatic (2/m) (same H-M symbol)

Augelite is an aluminium phosphate mineral with formula: Al2(PO4)(OH)3. The shade varies from colorless to white, yellow or rose. Its crystal system is monoclinic.

It was first described by Christian Wilhelm Blomstrand for an occurrence in Västanå iron mine at Scania, Sweden in 1868 and derives its name from the Greek αύγή in reference to its pearly lustre.

It occurs as a product of metamorphism of phosphate bearing peraluminous sediments and in high-temperature hydrothermal ore deposits. It occurs in association with attakolite, svanbergite, lazulite, hematite, trolleite, berlinite, rutile, pyrophyllite, baryte, arsenopyrite, stannite, pyrite, andorite, cassiterite and zinkenite.

References

Augelite Wikipedia