Item talk:Q162676

Mindat Short Description

Spinel-Hercynite Series, Gahnite-Spinel Series, and the Magnesiochromite-Spinel Series.

Intensely coloured varieties due to the incorporation of various impurity elements. A few spinels from Sri Lanka can show an alexandrite colour change effect.

Geoscience Ontology Status Notes

Mineral name has been known since antiquity and predates any formal descriptive publication

IMA Formula (from Mindat)

MgAl₂O₄

RRUFF Formula (from Geoscience Ontology)

MgAl₂O₄

Additional References

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

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