A Geoscience Digital Image Library

TitleTremolite with phlogopite and calcite
DescriptionTremolite is a form of asbestos and a member of the amphibole family. It has the chemical of Ca2Mg5Si8O22(OH)2. Tremolite is fairly common and is an important temperature indicator for petrologists because at high temps, it will convert to dolomite. It occurs from the conversion of dolomite, silica and water into tremolite, calcite and carbon dioxide. This sample is about 6 cm.
LocationCanada ▹ Ontario. Near West Hawk Lake.
PhotographerShannon Heinle. 2001-10-25.
CollectionUniversity of North Dakota Mineralogy Collection #1377.
Key wordstremolite, asbestos, amphibole
Tech details217 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera.
GeoDIL number1707