actinolite

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actinolite

(ăktĭn`əlīt): see amphiboleamphibole
, any of a group of widely distributed rock-forming minerals, magnesium-iron silicates, often with traces of calcium, aluminum, sodium, titanium, and other elements.
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actinolite

[‚ak′tin·ə‚līt]
(mineralogy)
Ca2(Mg,Fe)5Si8O22(OH)2 A green, monoclinic rock-forming amphibole; a variety of asbestos occurring in needlelike crystals and in fibrous or columnar forms; specific gravity 3-3.2.
References in periodicals archive ?
In the middle and upper workings, euhedral uralite "crystals" to three centimeters have been found sparingly in small pockets along with "byssolite"-included quartz.
Ferro-actinolite and actinolite are the main so-called asbestose minerals, also referred to as "byssolites," which fill most of the veins in the area.
Ted Johnson of Yankee Minerals had some interesting specimens of byssolite on white pericline from Val d' Ala, Piemonte, Italy.