geodil.jpg

A Geoscience Digital Image Library

538.jpg
TitleVesuvianite
DescriptionVesuvianite (also once called idocrase) is a silicate with the chemical formula Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4. It was found originally on the volcano, Mt Vesuvius. Vesuvianite forms by contact metamorphism of impure limestones, and is often found with other exotic minerals. Typical vesuvianite is brown, but green varieties such as this are not uncommon. This sample is approximately 6 cm across.
LocationUSA ▹ California
PhotographerShannon Heinle. 2001-05-22.
CollectionUniversity of North Dakota Mineralogy Collection #1271.
Key wordsidocrase, vesuvianite
Tech details286 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera.
GeoDIL number538