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Mica Group

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Probably used in the mineralogical sense by 1706 and originally "smicka" and from the Latin micare - to flash or glisten in allusion to the material's appearance. Isinglass predates the use of mica as a mineral term and known from at least 1535, but isinglass also referred to the matter from the sturgeon fish that also had pearly flakes from the scales.
A group of sheet silicates that can be parted into flexible or brittle sheets. Includes the True Micas and the Brittle Micas. Also known as the "mica family."

Classification of Mica Group

Relationship of Mica Group to other Species

Group Members:
Aluminoceladonite K(Mg,Fe2+)Al(Si4O10)(OH)2
Anandite (Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2
Annite KFe32+(AlSi3O10)(OH)2
Aspidolite NaMg3(AlSi3O10)(OH)2
Balestraite KLi2V5+Si4O12
Bityite LiCaAl2(AlBeSi2O10)(OH)2
Boromuscovite KAl2(BSi3O10)(OH)2
Brammallite (Na,H3O)(Al,Mg,Fe)2((Si,Al)4O10)(OH)2
Celadonite K(Mg,Fe2+)Fe3+(Si4O10)(OH)2
Chernykhite (Ba,Na)(V3+,Al,Mg)2((Si,Al)4O10)(OH)2
Chromceladonite K(Mg,Fe2+)(Cr,Al)(Si4O10)(OH)2
Chromphyllite K(Cr,Al)2(AlSi3O10)(OH,F)2
Clintonite Ca(Mg,Al)3(Al3SiO10)(OH)2
Eastonite KMg2Al(Al2Si2O10)(OH)2
Ephesite LiNaAl2(Al2Si2O10)(OH)2
Ferroaluminoceladonite K(Fe2+,Mg)(Al,Fe3+)(Si4O10)(OH)2
Ferroceladonite K(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2
Ferrokinoshitalite (Ba,K)(Fe2+,Mg)3(Al2Si2O10)(OH,F)2
Fluorannite KFe32+(AlSi3O10)(F,OH)2
Fluorophlogopite KMg3(AlSi3O10)(F,OH)2
Ganterite (Ba,Na,K)(Al,Mg)2(AlSi3O10)(OH)2
Glauconite (K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
Hendricksite K(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2
Illite K0.65Al2.0[Al0.65Si3.35O10](OH)2
Kinoshitalite (Ba,K)(Mg,Mn2+,Al)3(Al2Si2O10)(OH)2
Luanshiweiite KLiAl1.50.5(Si3.5Al0.5)O10(OH,F)2
Manganiceladonite KMgMn3+Si4O10(OH)2
Margarite CaAl2(Al2Si2O10)(OH)2
Masutomilite (K,Rb)(Li,Mn3+,Al)3(AlSi3O10)(F,OH)2
Montdorite (K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
Muscovite KAl2(AlSi3O10)(OH)2
Nanpingite CsAl2(AlSi3O10)(OH,F)2
Natro-glauconite (Na,K)(Fe3+,Al,Mg)2((Si,Al)4O10)(OH)2
Norrishite KLiMn23+(Si4O10)O2
Oxykinoshitalite (Ba,K)(Mg,Ti,Fe3+,Fe2+)3((Si,Al)4O10)(O,OH,F)2
Oxyphlogopite K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2
Paragonite NaAl2(AlSi3O10)(OH)2
Phengite KAl2(AlSi3O10)(OH)2
Phlogopite KMg3(AlSi3O10)(OH)2
Polylithionite KLi2Al(Si4O10)(F,OH)2
Preiswerkite NaMg2Al(Al2Si2O10)(OH)2
Roscoelite K(V3+,Al)2(AlSi3O10)(OH)2
Shirokshinite KNaMg2(Si4O10)F2
Shirozulite K(Mn2+,Mg)3(AlSi3O10)(OH)2
Siderophyllite KFe22+Al(Al2Si2O10)(OH)2
Sokolovaite CsLi2Al(Si4O10)F2
Suhailite (NH4)Fe32+(AlSi3O10)(OH)2
Tainiolite KLiMg2(Si4O10)F2
Tetraferriannite KFe32+((Fe3+,Al)Si3O10)(OH)2
Tetraferriphlogopite KMg3(Fe3+Si3O10)(OH,F)2
Tobelite (NH4,K)Al2(AlSi3O10)(OH)2
Trilithionite K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Voloshinite Rb(LiAl1.51.5)(Al0.5Si3.5)O10F2
Wonesite (Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4
Yangzhumingite KMg2.5(Si4O10)F2
Zinnwaldite KLiFe2+Al(AlSi3O10)(F,OH)2

Other Names for Mica Group

Name in Other Languages:
Norwegian (Bokmål):Glimmer
Norwegian (Nynorsk):Glimmer
Simplified Chinese:云母族

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Mica Group in petrology

An essential component of (items highlighted in red)
Common component of (items highlighted in red)
Accessory component of (items highlighted in red)

References for Mica Group

Reference List:
Hanks, H.G. (1882) Notes on mica, Min. Sci. Press: 44: 113, 129.

Colles, G.W. (1906) Mica and the Mica Industry. Philadelphia: Franklin Institute.

Stevens, R.E., Schaller, W.T. (1942) The rare alkalies in micas. American Mineralogist: 27: 525-537.

McCauley, J.W., Newnham, R.E. (1973) Structure refinement of a barium mica. Zeitschrift Kristallographie: 137: 360-367.

Boettcher, A.L., O'Neil, J.R. (1980) Stable isotope, chemical and petrographic studies of high pressure amphiboles and micas: evidence for metasomatism in the mantle source regions of alkali basalts and kimberlites. American Journal of Science: 280A: 594-621.

Ohta, T., Takeda, H., Takéuchi, Y. (1982) Mica polytypism: similarities in the crystal structures of coexisting 1M and 2M 1 oxybioites. American Mineralogist: 67: 298-310.

Baley, S.W. (1984) Crystal chemistry of the true micas. In S.W. Bailey Ed., Micas, 13: 13-60. Reviews in Mineralogy, Mineralogical Society of America, Washington, D.C.

Guidotti, C.V. (1984) Micas in metamorphic rocks. In S.W. Bailey, Ed., Micas, 13: 357-467. Reviews in Mineralogy, Mineralogical Society of America, Chantilly, Virginia.

Solie, D.N., Su, S.-C. (1987) A occurrence of Ba-rich micas from the Alaska Range. American Mineralogist: 72: 995-999.

Tlili A, Smith D C, Beny J M, Boyer H (1989) A Raman microprobe study of natural micas. Mineralogical Magazine 53, 165-179.

Mitchell, R.H. (1995) Compositional variation of micas in kimberlites, orangeites, lamproites and lamprophyres. In 6th International Kimberlite Conference, Volume 16 Kimberlites, related rocks and mantle xenoliths, vol. 38: 390-392. Russian Geology and Geophysics, Alberton Press, New York.

Rieder, M., Cavazzini, G., D'Yakonov, Y.S., Frank-Kamenetskii, V.A., Gottardi, G., Guggenheim, S., Koval', P.V., Müller, G., Neiva, A.M.R., Radoslovich, E.W., Robert, J.-L., Sassi, F.P., Takeda, H., Weiss, Z., Wones, D.R. (1998) Nomenclature of the micas. The Canadian Mineralogist: 36: 905-912.

Greenwood, J.C. (1998) Barian-titanian micas from Ilha da Trindade, South Atlantic. Mineralogical Magazine: 62: 687-695.

Rieder, M., Cavazzini, G., D'Yakonov, Y.S., Frank-Kamenetskii, V.A., Gottardi, G., Guggenheim, S., Koval', P.V., Müller, G., Neiva, A.M.R., Radoslovich, E.W., Robert, J.-L., Sassi, F.P., Takeda, H., Weiss, Z., Wones, D.R. (1999) Nomenclature of the micas. Mineralogical Magazine: 63: 267-279.

Beran, A. (2002) infrared spectroscopy of micas. In A. Mottana, F.P., Sassi, J.B. Thompson, Jr., and S. Guggenheim Eds., Micas: Crystal Chemistry and Metamorphic Petrology, 46: 351-369. Reviews in Mineralogy and Geochemistry, Mineralogical Society of America, Chantilly, Virginia.

Mottana, A., Sassi, F.B., Thompson, J.B.Jr., Guggenheim, S., editors (2002) Micas: Crystal Chemistry and Metamorphic Petrology. Reviews in Mineralogy and Geochemistry, Mineralogical Society of America, Chantilly, Virginia, 499pp.

Fleet, M.E. (2003) Rock-Forming Minerals. 3A. Micas (2nd. edition). The Geological Society, London, U.K. (740 p.).

Hetherington, C.J., Gieré, R., Graeser, S. (2003) Composition of barium-rich white micas from the Berisal complex, Simplon region, Switzerland. The Canadian Mineralogist: 41: 1281-1291.

Mercier, P.H.J., Rancourt, D.G., Redhammer, G.J., Lalonde, A.E., Robert, J.-L., Berman, R.G., Kodama, H. (2006) Upper limit of the tetrahedral rotation angle and factors affecting octahedral flattening in synthetic and natural 1M polytype C2/m space group micas. American Mineralogist: 91: 831-849.

Roda-Robles, E., Pesquera, A., Gil-Crespo, P.P., Torres-Ruiz, J., De Parseval, P. (2006) Mineralogy and geochemistry of micas from the Pinilla de Fermoselle pegmatite (Zamora, Spain). European Journal of Mineralogy: 18: 369-377.

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Localities for Mica Group

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