A Geoscience Digital Image Library

TitleGrunerite (amosite), iron amphibole
DescriptionGrunerite is member of the amphibole group. It has the chemical formula of Fe7(Si8O22)(OH)2. When it is asbestiform (formed as fine asbestos needles and threads), as in this sample, it is called amosite. This sample is about 9 cm.
LocationCanada ▹ Quebec
PhotographerShannon Heinle. 2001-11-08.
CollectionUniversity of North Dakota Mineralogy Collection #1407.
Key wordsgrunerite, asbestos, amosite, amphibole
Tech details870 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera.
GeoDIL number1779