anthophyllite


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Related to anthophyllite: actinolite, gedrite

anthophyllite

(ăn'thəfĭl`īt): 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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anthophyllite

[‚an·thō′fī‚līt]
(mineralogy)
A clove-brown orthorhombic mineral of the amphibole group, a variety of asbestos occurring as lamellae, radiations, fibers, or massive in metamorphic rocks. Also known as bidalotite.
References in periodicals archive ?
Churg and Warnock (15) have noted that from a medical viewpoint the "noncommercial" types of asbestos such as anthophyllite are most likely to be encountered as natural contaminants of other minerals.
The limited data have shown that in the United States elevated exposures to anthophyllite have occurred among talc workers (16) and in commercial talc manufacturing (17).
Key observations in this case included the levels of tissue burden of anthophyllite as well as the qualitative composition of the fibers, appreciably different from expected findings in the general population (8,15).
The uncoated fiber burden in this individual indicated an appreciable number of anthophyllite asbestos fibers.
There were 24 uncoated amphibole asbestos fibers [23 anthophyllite (Figure 5) and one tremolite] in the scanned area (Table 2).
This deformation phase is defined by actinolite, chlorite and muscovite in the greenschists (Figures 3a y 3b), by hornblende in the hornblende schists (Figure 3c) and the amphibolites (Figure 3e), by chlorite, muscovite and graphite in quartz-muscovite-chlorite schists or mica schists (Figures 3h and 30, and by hornblende and anthophyllite in the anthophyllite schists (Figure 3j).
Selected-area electron diffraction, which can be performed with TEM, provides information on crystalline structure, which can be of value when different fibers have similar chemical compositions, for example, anthophyllite and talc.
Types of Asbestos Serpentine Amphiboles Chrysotile Commercially exploited Amosite Crocidolite Noncommercial amphiboles Tremolite Actinolite Anthophyllite Table 2.
Amphibole minerals include five asbestos species: amosite, crocidolite, tremolite, anthophyllite, and actinolite.
Malignant mesothelioma from neighborhood exposure to anthophyllite asbestos.
The high grade zones display typical VMS style alteration including talc-chlorite as well as cordierite and anthophyllite.