Item talk:Q162217

Mindat Short Description

Feldspar Group.

Ca-rich end member of the plagioclase (Albite-Anorthite Series).

High- and low-temperature structural modifications exist.

Geoscience Ontology Status Notes

Rose G (1823) Ueber den Feldspath, Albit, Labrador und Anorthit, Annalen der Physik und der Physikalischen Chemie 73, 173-208

IMA Formula (from Mindat)

Ca(Al₂Si₂O₈)

RRUFF Formula (from Geoscience Ontology)

CaAl₂Si₂O₈

Additional References

• http://www.handbookofmineralogy.com/pdfs/anorthite.pdf

• http://www.webmineral.com/data/Anorthite.shtml