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Related to phlogopite: biotite


A yellow to dark brown mica, K(Mg,Fe)3AlSi3O10(OH)2, used in insulation.

[Greek phlogōpos, fiery-looking (phlox, phlog-, flame; see bhel- in Indo-European roots + ōps, ōp-, eye, face; see okw- in Indo-European roots) + -ite.]


(Minerals) a brownish mica consisting of a hydrous silicate of potassium, magnesium, and aluminium, occurring principally in metamorphic limestones and ultrabasic rocks. Formula: KMg3AlSi3O10(OH)2. See also mica
[C19: from Greek phlogōpos of fiery appearance, from phlox flame +ōps eye]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.phlogopite - a brown form of mica consisting of hydrous silicate of potassium and magnesium and aluminum
isinglass, mica - any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
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References in periodicals archive ?
Toksoy-Koksal F, Turkmenoglu AG, Gonciioglu MC (2001) Vermiculitization of phlogopite in metagabbro, Central Turkey.
Comparison of the Surface Structure of the Tetrahedral Shets of Muscoviet Phlogopite by AFM," Phys.
2003), biotite (Wallander, 2000b), phlogopite (Paris et al.
A cursory appraisal of the results (Table 1) indicates that the metacarbonates are predominantly dolomitic with calcite as subordinate, while quartz, talc, phlogopite and probably muscovite constitute the accessory phases.
There are just two types of mica which can be used in electrical technology muscovite and phlogopite (properties of muscovite and phlogopite are shown in table 1).
The high water content of NE Pacific alkalic magmas suggests that one trace phase in the enriched mantle source is a hydrous phase, possibly phlogopite or amphibole.
There are two main types of mica used in industrial applications, phlogopite and muscovite.
The intersected rock is interpreted as serpentine and calcite kimberlite carrying visually identified pyrope garnet, chrome diopside, phlogopite, and mantle peridotite xenoliths, as well as abundant limestone xenoliths (most less than 10 cm across), some of which carry fossils.
A natural phlogopite mica sample is heat-treated, and the phase transformation and the shape deformation of the sample can be considered as the cause of the pearlescent appearance.
The company's 5000 series phlogopite mica line has been expanded to include five grades ranging in particle size from 7 to 61 microns; surface treated grades are also available.