http://ediss.uni-goettingen.de/handle/11858/00-1735-0000-0006-B2E6-3?show=full&locale-attribute=en

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Rock-Forming Minerals: Orthosilicates, Volume 1A - William Alexander Deer, R. A. Howie, J. Zussman - Google Books

https://books.google.de/books?id=uwsIAYz7-QIC&pg=PA161#v=onepage

A second edition, in two parts, of Volume 1 of this well-known reference series. This volume deals mainly with the olivine and garnet groups and also the humite group, zircon, sphene, vesuvianite, the Al2SiO5 (including mullite), topaz, staurolite and…

Mineralienatlas Lexikon - Indien

https://www.mineralienatlas.de/?l=691

Keine Beschreibung vorhanden.