A white to dark gray amphibole mineral, Ca2Mg5Si8O22(OH)2, typically occurring in aggregates and used as a substitute for asbestos and in paints and ceramics.
[French trémolite, after Tremola, a valley in the Swiss Alps.]
tremolite
Dictionary:
trem·o·lite (trĕm'ə-līt')  |
n.
A white to dark gray amphibole mineral, Ca2Mg5Si8O22(OH)2, typically occurring in aggregates and used as a substitute for asbestos and in paints and ceramics.
A white to dark gray amphibole mineral, Ca2Mg5Si8O22(OH)2, typically occurring in aggregates and used as a substitute for asbestos and in paints and ceramics.
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| Sci-Tech Encyclopedia: Tremolite |
The name given to magnesium-rich monoclinic calcium amphibole Ca2Mg5Si8O22(OH)2 The mineral is white to gray, but colorless in thin section. Unlike other end-member compositions of the calcium amphibole group, very pure tremolite is found in nature. Substitution of Fe for Mg is common, but pure ferrotremolite, Ca2Fe5Si8O22(OH)2 is rare. Intermediate compositions between tremolite and ferrotremolite are referred to as actinolites, and are green in color and encompass a large number of naturally occurring calcium amphiboles. See also
| Rock & Mineral Guide: tremolite |
| WordNet: tremolite |
Note: click on a word meaning below to see its connections and related words.
The noun has one meaning:
Meaning #1:
a white or pale green mineral (calcium magnesium silicate) of the amphibole group used as a form of asbestos
| Wikipedia: Tremolite |
Tremolite is a member of the amphibole group of silicate minerals with composition: Ca2Mg5Si8O22(OH)2. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite. Pure magnesium tremolite is creamy white, but the color grades to dark green with increasing iron content. It has a hardness on Mohs' scale of 5 to 6. Nephrite, one of the two minerals of the gemstone jade, is a green variety of tremolite.
A fibrous variety of tremolite is used as asbestos. This material is toxic and inhaling the fibers can lead to asbestosis, lung cancer and mesothelioma.
Tremolite is an indicator of metamorphic grade since at high temperatures it converts to diopside. Calcite, grossular, talc, and serpentine are common associates of tremolite.
See also
- Libby, Montana – location of asbestos-related ailments caused by tremolite
References
- Webmineral
- Mindat
- Mineral galleries
- Mineral may unlock secrets of Venus's ancient oceans, New Scientist, 10 October 2007
| This article about a specific silicate mineral is a stub. You can help Wikipedia by expanding it. |
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 | ferritremolite (mineralogy) |
| ferrotremolite (mineralogy) |
| amphibole (mineralogy) |
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| Sci-Tech Encyclopedia. McGraw-Hill Encyclopedia of Science and Technology. Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved. Read more |
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| Rock & Mineral Guide. Peterson Field Guide to Rocks and Minerals, by Frederick H. Pough. Copyright © 1998 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Tremolite". Read more |
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- What are Tremolite?
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Mentioned in
- ferritremolite (mineralogy)
- ferrotremolite (mineralogy)
- amphibole (mineralogy)
- asbestos (mineralogy)
- actinolite
- soapstone (in geology)
- Marble (mineralogy and petrology)
- hornblende
- Cummingtonite (mineralogy and petrology)
- Anthophyllite (mineralogy and petrology)
- talc
- wollastonite
- amphiboles
- calcium (element – in chemistry)
