Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A greenish variety of amphibole.
from The Century Dictionary.
- noun A trade-name of an apparatus by which the ultra-violet rays may be employed in the treatment of cutaneous diseases.
- noun A radiatedmineral, called by Werner strahlstein (ray-stone), consisting of silicates of calcium, magnesium, and iron.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A bright green variety of amphibole occurring usually in fibrous or columnar masses.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A
mineral withmonoclinic crystals of the chemical formulaCa 2(Mg ,Fe )5Si 8O 22(OH )2, belonging to theamphibole group.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a green mineral of the amphibole group; calcium magnesium iron silicate
Etymologies
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Examples
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In accompanying notes, a geologist identified as W.J. Hunter boasted of a rock formation from the Miocene Epoch that gleamed with boulders of "tourmaline-actinolite-quartz plutonites."
The Derrick Next Door: Suburb Explores a Crude Solution to Its Budget Woes 2009
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Greenstone, diorite, and actinolite are found, though not so abundantly as those above mentioned.
Personal Narrative of a Pilgrimage to Al-Madinah and Meccah 2003
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In particular, the minerals concerned are: chrysotile, amosite, crocidolite, anthophyllite, tremolite und actinolite, which are categorized on the basis of their chemical composition and fibrous structure as serpentine Asbestos
1. Introductory part: Asbestos - Deposits, uses, types, characteristics 1996
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The general character of the rock here is sienitic; but, besides this peculiar quality of feldspar, the hornblende appears as actinolite, (ray-stone,) so called from the form of its crystallization; while the quartz element is faintly present, or appears in separate masses.
The Atlantic Monthly, Volume 15, No. 87, January, 1865 Various
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_Chalcedony_ too (which when banded furnishes us our _agates_, and when reddish our _carnelian_) is a variety of quartz, and _prase_ is only quartz colored green by fibers of actinolite within it.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Frank Bertram Wade
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These include a dangerous fibrous asbestos as well as the harmless monoclinic amphibole, actinolite: two minerals with the same composition but very different effects on human physiology.
WHAT REALLY HAPPENED Mike Rivero 2010
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Libby vermiculite is contaminated with an especially toxic form of naturally-occurring asbestos called tremolite-actinolite asbestiform mineral fibers.
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The six types of asbestos are chrysotile, crocidolite, amosite, anthophyllite asbestos, tremolite asbestos, and actinolite asbestos.
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South - west of this, five miles above Catar6 to the west of the road, and northwest of Mount Basimo, he obtained a dark-colored actinolite slate.
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The types amosite, anthopyllite, tremolite and actinolite are quantitatively (together 50 000
1. Introductory part: Asbestos - Deposits, uses, types, characteristics 1996
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