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Related to actinolite: epidote, tremolite
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  • noun

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a green mineral of the amphibole group

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References in periodicals archive ?
This produces minerals that contain water in their structure as hydroxyl ions (e.g., chlorite, epidote, actinolite and serpentine).
However, the Raman spectra of actinolite may be very similar, and therefore caution must be exercised when interpreting the spectra (Figure 18).
Ongoing controversy exists with respect to the potency of various forms of asbestos (i.e., crocidolite, anthophyllite, tremolite, actinolite, amosite, chrysotile).
Subsolidus alteration is manifested by the formation of a secondary paragenesis mainly consisting of chlorite, sericite and a secondary green--to colourless amphibole (Mg-hornblende to actinolite and cummingtonite) at the expense of the primary minerals.
The presence of Al in marbles promoted the formation of several minerals, such as clinochlore, epidote-group minerals, garnet, muscovite, actinolite and tremolite distributed in different reaction zones of marbles.
The binding values have been set for the following substances: asbestos (actinolite, anthophyllite, chrysotile, gruenerite, crocidolite, tremolite), benzene, hardwood dusts, lead and its inorganic compounds, vinyl chloride monomer [9,14,15].
From visual inspection it appears that the holes intersected the same mineralized system consisting of upper amphibolite-metamorphosed mafic and felsic gneiss that have suffered intense pre-metamorphic, volcanogenic massive sulphide style ("VMS") hydrothermal alteration which strongly metasomatized the rocks, in some cases transforming them locally to massive actinolite. The system is clearly large and anomalous with regard to the amount of sulphides present and in base metal and arsenic content.
In the chlorite rock it is observed to a great extent, because actinolite is not formed in this stone and we can conclude that the rock still is not reached at the green sheet mass (figure 13).
Non-metallic minerals are apatite, quartz, hornblende, actinolite, epidote, chlorite, Saussure, pomegranate.
Pervasive sodic-calcic alteration grades into zones of layered, actinolite crystals intergrown with magnetite.
Specifically, they are defined as being long and thin (having an aspect ratio greater than 3:1), and falling into categories of either "serpentine" (chrysotile) or "amphibole" (tremolite, amosite, crocidolite, actinolite, and anthophyllite) [7].
"This area is blessed with unlimited and heavy deposits of precious and semi-precious stones, precious and semi-precious metals, and industrial stones like Ruby, Gold, Topaz, Aquamarine, Tourmaline, Epidote, Paragasite, Zircon, Actinolite, Lead, Moonstone, Himalayan Quartz, Emerald, Marble, Granite, Feldspar, Mica, Calcite, Feldspar, Antimony, Graphite, Alum, Coal, Copper, Barite, China Clay etc".