Item talk:Q162311

Mindat Short Description

Carboirite-Chloritoid Series. The Fe2+ analogue of ottrélite and magnesiochloritoid.

Monoclinic and triclinic polytypes are known.

Geoscience Ontology Status Notes

Originally named chloritspath: Fiedler K G (1832) Lagerstätten des diaspor, chloritspath, pyrophyllit und monazit, aufgefund in Ural, Annalen der Physik und Chemie 25, 322-333 Name changed to chloritoid: Breithaupt A (1835) Neue specifische gewichte von mineralien, Journal für Praktische Chemie 4, 272-278

IMA Formula (from Mindat)

Fe²⁺Al₂O(SiO₄)(OH)₂

RRUFF Formula (from Geoscience Ontology)

Fe²⁺Al₂OSiO₄(OH)₂

Additional References

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

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