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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 ?
Typically, ore extracted from the mine contains 10% apatite, 20% calcium carbonate and 65% phlogopite mica, which is hard to separate.
Phengite geobarometry based on the limiting assemblage with K-feldspar, phlogopite, and quartz.
Stevenson, Long-Term Thermal Cycling of Phlogopite Mica-Based Compressive Seals for Solid Oxide Fuel Cells, J.
phlogopite (and) iron oxides Cl 77491, Cl 77492 & Cl
Whereas phosphatic rocks are feedstock for both conventional and unconventional phosphate fertilizers, potassium silicates, such as feldspars, biotite, phlogopite, and muscovite, and rocks with feldspathoids, such as leucite, nepheline and clayrich sediments, especially illite, are the basis for alternative potassium fertilization (Straaten, 2010).
Most of the metacarbonate rocks are monomineralic (calcite or dolomite) but locally contain talc, muscovite, phlogopite, garnet, and minor tremolite.
Typical minerals found in lamproite rocks include forsterite, leucite, phlogopite, and iron-rich sanidine.
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.
Phlogopite, chromian muscovite and pyrite appear to be the pathfinder minerals for ruby.
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.