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Dioctahedral mica

A group of related mineral species

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Photos of Dioctahedral mica (2871)Recorded Ages and Analyses Discuss Dioctahedral mica

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Glauconite

Roubaix, Galena Mining District, Lawrence County, South Dakota, USA

Glauconite, etc.

Bertocchi quarry, San Pietro Mussolino, Vicenza Province, Veneto, Italy

Glauconite

Moscow Oblast, Russia

Glauconite

Roubaix, Galena Mining District, Lawrence County, South Dakota, USA

Glauconite, etc.

Bertocchi quarry, San Pietro Mussolino, Vicenza Province, Veneto, Italy

Glauconite

Moscow Oblast, Russia

Glauconite

Roubaix, Galena Mining District, Lawrence County, South Dakota, USA

Glauconite, etc.

Bertocchi quarry, San Pietro Mussolino, Vicenza Province, Veneto, Italy

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About Dioctahedral micaHide

Member of:

Mica Group

A major subgroup of the micas, where there are two octahedrally coordinated D cations per formula unit.
AD2T4O10(OH,F)2,
in which generally
A is K or Na,
D is Al, Mg, Li, Fe etc.;
T is mostly Si +/- Al.

Unique IdentifiersHide

Mindat ID:

53391

Long-form identifier:

mindat:1:1:53391:1

View all 234 analyses with additional filters.

Age distributionHide

Recorded ages:

Mesoarchean to Quaternary : 2890 Ma to 1.22 ± 0.06 Ma - based on 234 recorded ages.

Sample ages:

Sample ID	Recorded age	Geologic Time	Dating method
1	1.22 ± 0.06 Ma	Pleistocene	K-Ar
2	3.5 ± 0.9 Ma	Pliocene
3	15.3 ± 0.6 Ma	Miocene	K-Ar
4	61.6 ± 1.2 Ma	Paleocene	K-Ar
5	78.9 ± 1.8 Ma	Late/Upper Cretaceous	K-Ar
6	94.6 ± 2.8 Ma	Late/Upper Cretaceous	K-Ar
7	139.8 ± 2.8 Ma	Early/Lower Cretaceous	K-Ar
8	182 to 178 Ma	Early Jurassic	Ar-Ar
9	231 Ma	Late/Upper Triassic	K-Ar
10	243 Ma	Middle Triassic	K-Ar
11	276.1 ± 5.1 Ma	Cisuralian	K-Ar
12	295 to 280 Ma	Cisuralian	Ar-Ar
13	339 Ma	Mississippian	K-Ar
14	354 Ma	Mississippian	Rb-Sr
15	362.8 ± 1 Ma	Late/Upper Devonian	Ar-Ar
16	370 Ma	Late/Upper Devonian	Rb-Sr
17	386 Ma	Middle Devonian	Rb-Sr
18	412 to 403 Ma	Early/Lower Devonian	Ar-Ar
19	670 to 660 Ma	Cryogenian	Ar-Ar
20	2890 Ma	Mesoarchean	Rb-Sr

Sample references:

ID	Locality	Reference
1	Far Southeast Cu-Au deposit, Mankayan, Benguet Province, Cordillera Administrative Region, Luzon, Philippines	Arribas, A., Hedenquist, J. W., Itaya, T., Okada, T., Concepci
2	Tirad deposit, Guinaoang, Mankayan, Benguet Province, Cordillera Administrative Region, Luzon, Philippines	Arribas, A., Hedenquist, J. W., Itaya, T., Okada, T., Concepci
3	Tonopah Mining District, San Antonio Mountains, Nye County, Nevada, USA	Silberman, M. L., Bonham, H. F. Jr., Garside, L. J., Ashley, R. P. (1978) Radiometric ages of volcanic and plutonic rocks and hydrothermal alteration-mineralization in the Tonopah Mining District and vicinity, Nye and Esmerelda Counties, Nevada. United States Department of the Interior Geological Survey Open-File Report 78-841. 1-48.
4	Round Mountain Mining District, Toquima Range, Nye County, Nevada, USA	Shawe, D. R., Marvin, R. F., Andriessen, P. A. M., Mehnert, H. H., Merritt, V. M. (1986) Ages of igneous and hydrothermal events in the Round Mountain and Manhattan gold districts, Nye County, Nevada. Economic Geology, 81 (2) 388-407 doi:10.2113/gsecongeo.81.2.388
5	Manhattan Mining District, Toquima Range, Nye County, Nevada, USA	Shawe, D. R., Marvin, R. F., Andriessen, P. A. M., Mehnert, H. H., Merritt, V. M. (1986) Ages of igneous and hydrothermal events in the Round Mountain and Manhattan gold districts, Nye County, Nevada. Economic Geology, 81 (2) 388-407 doi:10.2113/gsecongeo.81.2.388
6	Fujigatani mine, Iwakuni City, Yamaguchi Prefecture, Japan	Shibata K, Ishihara S (1974): K-Ar ages of the major tungsten and molybdenum deposits in Japan. Economic Geology 69(8) 1207-1214.
7	Ilbo mine, Cheonan City, South Chungcheong Province, South Korea	So, Chil-Sup, Shelton, Kevin L. (1987) Stable isotope and fluid inclusion studies of gold- and silver-bearing hydrothermal vein deposits, Cheonan-Cheongyang-Nonsan mining district, Republic of Korea; Cheonan area. Economic Geology, 82 (4) 987-1000 doi:10.2113/gsecongeo.82.4.987
8	Koktokay pegmatite field, Fuyun Co., Altay Prefecture, Ili Kazakh Autonomous Prefecture, Xinjiang, China	Li J., Zou T., Liu X., Wang D. and Ding X. (2015). The Metallogenetic Regularities of Lithium Deposits in China. Acta Geologica Sinica (English Edition), 89(2), 652-670.
9	Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK	Ineson, P. R., Mitchell, J. G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111 (6). 521-537 doi:10.1017/s0016756800041571
10	Old Sandbed Mine, Caldbeck, Allerdale, Cumbria, England, UK	Ineson, P. R., Mitchell, J. G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111 (6). 521-537 doi:10.1017/s0016756800041571
11	Rožná deposit, Rožná, Žďár nad Sázavou District, Vysočina Region, Czech Republic	K?
12	Yubileinoye Ta deposit, Krasnokordon, Asubulak ore field, Ulan District, East Kazakhstan Region, Kazakhstan	Murzintsev N.G., Oytseva T.A., Kotler P.D., Vladimirov A.G., Travin A.V., Khromykh S.V., D'yachkov B.A., Kuz'mina O.N., Annikova I.Yu. (2016). Ar/Ar Isotopic age and structural control of spodumene-pegmatite deposits of eastern Kazakhstan. Conference on the Altaids and Uralides March 29
13	Thornthwaite Mine, Thornthwaite, Above Derwent, Allerdale, Cumbria, England, UK	Ineson, P. R., Mitchell, J. G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111 (6). 521-537 doi:10.1017/s0016756800041571
14	Sweetwater Mine, Ellington, Reynolds County, Missouri, USA	Grant N K, Laskowski T E, Foland K A (1984): Rb-Sr and K-Ar ages of Paleozoic glauconites from Ohio-Indiana and Missouri, U.S.A. Isostope Geoscience 2, 217-239.
15	Lake Boga granite quarry, Lake Boga, Swan Hill Rural City, Victoria, Australia	Mills, S. J., Birch, W. D., Maas, R., Phillips, D., Plimer, I. R. (2008) Lake Boga Granite, northwestern Victoria: mineralogy, geochemistry and geochronology. Australian Journal of Earth Sciences, 55 (3) 281-299 doi:10.1080/08120090701769449
16	Magmont Mine, Bixby, Iron County, Missouri, USA	Stein, Holly J., Kish, Stephen A. (1985) The timing of ore formation in Southeast Missouri; Rb-Sr glauconite dating at the Magmont Mine, Viburnum Trend. Economic Geology, 80 (3) 739-753 doi:10.2113/gsecongeo.80.3.739
17	Sweetwater Mine, Ellington, Reynolds County, Missouri, USA	Grant N K, Laskowski T E, Foland K A (1984): Rb-Sr and K-Ar ages of Paleozoic glauconites from Ohio-Indiana and Missouri, U.S.A. Isostope Geoscience 2, 217-239.
18	Khovu-Aksy Ni-Co deposit, Chedi-Kholsky District, Tuva, Russia	Tretiakova, I.G., Borisenko, A.S., Lebedev, V.I., Pavlova, G.G., Goverdovsky, V.A., Travin, A.V. (2010) Cobalt mineralization in the Altai–Sayan orogen: age and correlation with magmatism. Russian Geology and Geophysics, 51 (9) 1078-1090 doi:10.1016/j.rgg.2010.08.012
19	Udereiskoe, Krasnoyarsk Krai, Russia	Nozhkin, A. D., Borisenko, A. S., & Nevol
20	Wodgina Tantalite Mine, Wodgina, Abydos Station, Port Hedland Shire, Western Australia, Australia	Sweetapple, Marcus T., Collins, Peter L. F. (2002) Genetic Framework for the Classification and Distribution of Archean Rare Metal Pegmatites in the North Pilbara Craton, Western Australia. Economic Geology, 97 (4) 873-895 doi:10.2113/gsecongeo.97.4.873

Chemical AnalysisHide

Oxide wt%:

Showing 12 of 19 analyses on this page.

	1	2	3	4	5	6	7	8	9	10	11	12
SiO₂	48.21 %	46.49 %	47.25 %	52.82 %	49.40 %	49.32 %	51.03 %	48.93 %	51.72 %	51.25 %	48.30 %	44.96 %
TiO₂	1.06 %	0.10 %	0.12 %	0.29 %	0.45 %	0.19 %	0.32 %	0.39 %	0.02 %	0.32 %	0.29 %	0.04 %
Al₂O₃	32.13 %	38.92 %	39.73 %	23.34 %	31.66 %	29.03 %	26.63 %	28.05 %	27.14 %	23.94 %	6.77 %	37.39 %
FeO	5.46 %	0.51 %	0.70 %	0.12 %	1.65 %	2.20 %	1.36 %	2.25 %	3.27 %	3.06 %		0.04 %
MgO	0.25 %	0.44 %	0.15 %	5.93 %	2.39 %	3.08 %	4.18 %	3.36 %	3.34 %	4.40 %	5.78 %	0.02 %
MnO	0.09 %	0.02 %	0.03 %	0.04 %			0.10 %	0.09 %	0.04 %	0.00 %	0.07 %	0.02 %
Na₂O	1.04 %	6.97 %	6.96 %	0.16 %	0.91 %		0.66 %	0.68 %	0.04 %	0.36 %	0.05 %	0.81 %
K₂O	8.56 %	0.97 %	1.05 %	11.07 %	10.9 %	11.07 %	10.61 %	10.30 %	8.95 %	10.66 %	9.88 %	10.68 %
P₂O₅	0.03 %			0.00 %
Cr₂O₃		0.11 %	0.07 %				0.16 %	0.15 %	0.07 %	0.32 %	17.30 %	0.01 %
CaO		0.38 %	0.43 %	0.00 %	0.05 %		0.10 %	0.06 %	0.31 %	0.00 %	0.02 %	0.01 %
V₂O₃											0.77 %
Fe₂O₃*											3.63 %
CoO											0.01 %
NiO											0.01 %
ZnO											0.07 %
SrO											0.02 %
F											0.33 %	0.00 %
Cl											0.01 %	0.02 %
H₂O (by stoichiometry)											3.82 %
-O=(F+Cl)											-0.14 %
Sc₂O₃
BaO												0.01 %
H₂O												4.46 %
O=F,Cl
Total:	96.83 %	94.91 %	96.49 %	93.77 %	97.41 %	94.89 %	95.15 %	94.26 %	94.9 %	94.31 %	96.99 %	98.47 %

Empirical formulas:

Sample ID	Empirical Formula
13	(Na_0.93 K_0.02 )_Σ0.95 (Al _1.96Ca_0.02Mn_0.01Fe_0.04)_Σ2.03(Al_1.00Si_3.00O₁₀)OH₂
2	(Na_0.85Na_0.09) _Σ0.94(Al_1.91Mg_0.04 Fe_0.03 Ca_0.03Cr_0.01)_Σ2.02(Al_1.04Si_2.96)_Σ4.00O₁₀OH₂
3	(Na_0.86Na_0.08) _Σ0.94(Al_1.96Mg_0.01 Fe_0.04Ca_0.03)_Σ2.04(Al_1.01Si_2.99)_Σ4.00O₁₀OH₂
6	K_0.95Al_1.50(Mg_0.31 Fe²⁺_0.12 Al_0.11)_Σ0.5(Al_0.68Ti_0.01Si_3.31)_Σ4.00O₁₀OH₂
14	(K_0.86Na_0.11 )_Σ0.97(Al _1.46 Cr _0.01 Ca_0.01Mg_0.39Fe_0.06 Ti_0.02)_Σ1.95(Al_0.61Si_3.39O₁₀)OH₂
7	K_0.91Na_0.09(Mg_0.42 Fe_0.08 Ca_0.01Mn_0.01Al_1.51)_Σ1.93(Al_0.59Si_3.41)_Σ4.00O₁₀OH₂
8	K_0.89Na_0.09(Mg_0.34 Fe_0.13 Mn_0.01 Ti_0.02Al_1.51)_Σ2.11(Al_0.69Si_3.31)_Σ4.00O₁₀OH₂
15	K_0.93Na_0.03(Mg_0.47 Fe_0.10 Ca_0.01Ti_0.02Al_1.44)_Σ2.04(Al_0.52Si_3.48)_Σ4.00O₁₀OH₂
9	K_0.76Na_0.01(Mg_0.33 Fe_0.18 Ca_0.02 Al_1.54)_Σ2.07(Al_0.58Si_3.42)_Σ4.00O₁₀OH₂
11	(K_0.93Na_0.01◻_0.06)(Cr_1.01Mg_0.64Fe^T_0.20Al_0.17V³⁺_0.05Ti_0.02◻_0.91)[Si_3.58Al_0.42O₁₀]([OH]_1.89F_0.08O_0.03)
16	(K_0.98◻_0.02)(Mg_0.91V³⁺_0.61Fe^T_0.33Al_0.21Cr_0.19Ti_0.03◻_0.72)[Si_3.40Al_0.60O₁₀]([OH]_1.74F_0.19O_0.07)

Sample references:

ID	Locality	Reference	Notes
1	Kawadgaon-Challanpara pegmatite field, Dantewada District, Chhattisgarh, India	Singh, Yamuna, Pandit, P. S. C., Bagora, Sanjay, Jain, P. K. (2017) Mineralogy, geochemistry, and genesis of co-genetic granite-pegmatite-hosted rare metal and rare earth deposits of the Kawadgaon area, Bastar craton, Central India. Journal of the Geological Society of India, 89 (2) 115-130 doi:10.1007/s12594-017-0574-2	Muscovite from granite pegmatite. EMPA analysis
2	Steinsteg eclogite, Frosnitz valley, Matrei in Osttirol, Lienz District, Tyrol, Austria	Hoschek, G (2001) Thermobarometry of metasediments and metabasites from the Eclogite zone of the Hohe Tauern, Eastern Alps, Austria. Lithos, 59 (3) 127-150 doi:10.1016/s0024-4937(01)00063-9	EMPA analysis of paragonite after kyanite in a kyanite-eclogite
3	" "	Hoschek, G (2001) Thermobarometry of metasediments and metabasites from the Eclogite zone of the Hohe Tauern, Eastern Alps, Austria. Lithos, 59 (3) 127-150 doi:10.1016/s0024-4937(01)00063-9	EMPA analysis of a paragonite inclusion in garnet from a post eclogite-facies mica schists.
4	Case Parigi, Martiniana Po, Cuneo Province, Piedmont, Italy	Schertl, H. -P., Schreyer, W., Chopin, C. (1991) The pyrope-coesite rocks and their country rocks at Parigi, Dora Maira Massif, Western Alps: detailed petrography, mineral chemistry and PT-path. Contributions to Mineralogy and Petrology, 108 (1) 1-21 doi:10.1007/bf00307322	Sample from fine grained matrix of coesite-phenige-pyrope schist Mineral analyses were performed by means of the Cameca electron microprobe (CAMEBAX) , using a wavelength-dispersive technique with PAP correction acceleration voltage 15 kV, beam current 15 nA, measuring time 20 s).
5	Gablor Hill eclogites, Kulp district, Diyarbakir Province, Turkey	Okay, A. I.; Arman, M. B.; Göncüoglu, M. C. (1985) Petrology and phase relations of the kyanite-eclogites from eastern Turkey. Contributions to Mineralogy and Petrology, 91 (2). 196-204 doi:10.1007/bf00377767	colorless mica-flake in kyanite-eclogite. EMPA analysis
6	Charakoma eclogite, Soufli, Evros, Eastern Macedonia and Thrace, Greece	Mposkos, E.; Baziotis, I.; Proyer, A. (2011) Pressure–temperature evolution of eclogites from the Kechros complex in the Eastern Rhodope (NE Greece). International Journal of Earth Sciences, 101 (4). 973-996 doi:10.1007/s00531-011-0699-2	EMPA analysis of a primary phengite in an kyanite-eclogite.
7	Steinsteg eclogite, Frosnitz valley, Matrei in Osttirol, Lienz District, Tyrol, Austria	Hoschek, G (2001) Thermobarometry of metasediments and metabasites from the Eclogite zone of the Hohe Tauern, Eastern Alps, Austria. Lithos, 59 (3) 127-150 doi:10.1016/s0024-4937(01)00063-9	EMPA anallysis of phengite from a kyanite-eclogite
8	" "	Hoschek, G (2001) Thermobarometry of metasediments and metabasites from the Eclogite zone of the Hohe Tauern, Eastern Alps, Austria. Lithos, 59 (3) 127-150 doi:10.1016/s0024-4937(01)00063-9	EMPA analysis of a matrix phengite in a post eclogite-facies mica schists.
9	Obidim eclogite, Bansko Municipality, Blagoevgrad Province, Bulgaria	Janák, M.; Froitzheim, N.; Georgiev, N.; Nagel, T. J.; Sarov, S. (2011) P-T evolution of kyanite eclogite from the Pirin Mountains (SW Bulgaria): implications for the Rhodope UHP Metamorphic Complex. Journal of Metamorphic Geology, 29 (3). 317-332 doi:10.1111/j.1525-1314.2010.00920.x	EMPA analysis ( State Geological Institute of Dionyz Stur in Bratislava).of a phengite inclusion in garnet from a kyanite-eclogite
10	Weiß‑Spitze eclogites, Virgen valley, Lienz District, Tyrol, Austria	THOMAS, S.; FRANZ, G. (1988) Kluftminerale und ihre Bildungsbedingungen in Gesteinen der Eklogitzone/Südvenediger-Gebiet (Hohe Tauern, Österreich). Mitteilungen der Österreichischen Geologischen Gesellschaft, 81. 189-218	Phengite from a banded eclogite. EMPA analysis
11	Srednyaya Padma mine, Zaonezhie peninsula, Medvezhyegorsky District, Republic of Karelia, Russia	Frank K. Mazdab collection; sample FKM-257; https://www.rockptx.com/fkm-251-to-fkm-275/#FKM-257	occurs as pleochroic green micaceous masses intergrown with a similar-appearing V-enriched mica corresponding to a new unnamed V-analogue of celadonite ("vanadioceladonite"?), in a V-Cr metasomatite with several Fe-Zn-Cr-V oxide species, baryte, and quartz. Although all Fe is reported here as only Fe2O3 equivalent, the empirical formula shown here is derived from an estimated Fe3+/sumFe = 0.183; if the true ratio is higher or lower, there will be concomitant minor adjustments (<±0.02) in all of the major element apfu. Hence, based on the supplied wt% data, slightly differing alternative empirical formulas can be calculated using alternative normalization schemes, and so the formula given here should be considered an approximation.
12	Beluga sapphire property, Kimmirut, Baffin Island, Qikiqtaaluk Region, Nunavut, Canada	Belley, Philippe M., Dzikowski, Tashia J., Fagan, Andrew, Cempírek, Jan, Groat, Lee A., Mortensen, James K., Fayek, Mostafa, Giuliani, Gaston, Fallick, Anthony E., Gertzbein, Paul (2017) Origin Of Scapolite-Hosted Sapphire (Corundum) Near Kimmirut, Baffin Island, Nunavut, Canada. The Canadian Mineralogist, 55 (4) 669-699 doi:10.3749/canmin.1700018	OH Calculated OH=2-F-Cl
13	Eissee eclogite, Timmelbach valley, Prägraten am Großvenediger, Lienz District, Tyrol, Austria	Hoschek, Gert (2004) Comparison of calculated P-T pseudosections for a kyanite eclogite from the Tauern Window, Eastern Alps, Austria. European Journal of Mineralogy, 16 (1) 59-72 doi:10.1127/0935-1221/2004/0016-0059	EMPA analysis of paragonite found as an inclusion in garnet in a kyanite-eclogite.
14	" "	Hoschek, Gert (2004) Comparison of calculated P-T pseudosections for a kyanite eclogite from the Tauern Window, Eastern Alps, Austria. European Journal of Mineralogy, 16 (1) 59-72 doi:10.1127/0935-1221/2004/0016-0059	EMPA analysis of a phengite inclusion in garnet from a kyanite-eclogite
15	Steinsteg eclogite, Frosnitz valley, Matrei in Osttirol, Lienz District, Tyrol, Austria	Hoschek, G (2001) Thermobarometry of metasediments and metabasites from the Eclogite zone of the Hohe Tauern, Eastern Alps, Austria. Lithos, 59 (3) 127-150 doi:10.1016/s0024-4937(01)00063-9	EMPA analysis of a phengite inclusion in amphibole from a post eclogite-facies mica schists.
16	Srednyaya Padma mine, Zaonezhie peninsula, Medvezhyegorsky District, Republic of Karelia, Russia	Frank K. Mazdab collection; sample FKM-257; https://www.rockptx.com/fkm-251-to-fkm-275/#FKM-257	occurs as pleochroic green micaceous masses intergrown with similar-appearing chromceladonite, in a V-Cr metasomatite with several Fe-Zn-Cr-V oxide species, baryte, and quartz. Although all Fe is reported here as only Fe2O3 equivalent, the empirical formula shown here is derived from an estimated Fe3+/sumFe = 0.174; if the true ratio is higher or lower, there will be concomitant minor adjustments (<±0.02) in all of the major element apfu. Hence, based on the supplied wt% data, slightly differing alternative empirical formulas can be calculated using alternative normalization schemes, and so the formula given here should be considered an approximation.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Pressure (GPa)	Temp (K)
0019255	Tobelite	Mesto E, Scordari F, Lacalamita M, Schingaro E (2012) Tobelite and NH4+ -rich muscovite single crystals from Ordovician Armorican sandstones (Brittany, France): Structure and crystal chemistry American Mineralogist 97 1460-1468	2012	Ordovician Armorican sandstones, Brittany, France	0	293
0019256	Muscovite	Mesto E, Scordari F, Lacalamita M, Schingaro E (2012) Tobelite and NH4+ -rich muscovite single crystals from Ordovician Armorican sandstones (Brittany, France): Structure and crystal chemistry American Mineralogist 97 1460-1468	2012	Ordovician Armorican sandstones, Brittany, France	0	293
0005022	Aluminoceladonite	Drits V A, Zviagina B B, McCarty D K, Salyn A L (2010) Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite Sample Name: 136 American Mineralogist 95 348-361	2010	Tushlay, Mongolia	0	293
0005021	Aluminoceladonite	Drits V A, Zviagina B B, McCarty D K, Salyn A L (2010) Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite Sample Name: 602-1 American Mineralogist 95 348-361	2010	Twin Creek formation, Wyoming	0	293
0005028	Glauconite	Drits V A, Zviagina B B, McCarty D K, Salyn A L (2010) Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite Sample Name: BAB American Mineralogist 95 348-361	2010	Leningrad region, Russia	0	293
0005027	Glauconite	Drits V A, Zviagina B B, McCarty D K, Salyn A L (2010) Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite Sample Name: PILT American Mineralogist 95 348-361	2010	Ordovician sandstone, Latvia	0	293
0005026	Glauconite	Drits V A, Zviagina B B, McCarty D K, Salyn A L (2010) Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite Sample Name: 68-69 American Mineralogist 95 348-361	2010	Baltic region, Russia	0	293
0005025	Celadonite	Drits V A, Zviagina B B, McCarty D K, Salyn A L (2010) Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite Sample Name: Z1 American Mineralogist 95 348-361	2010	Russia	0	293
0005024	Celadonite	Drits V A, Zviagina B B, McCarty D K, Salyn A L (2010) Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite Sample Name: TAIH American Mineralogist 95 348-361	2010	Taiheizan, Akita Prefecture, Japan	0	293
0005023	Celadonite	Drits V A, Zviagina B B, McCarty D K, Salyn A L (2010) Factors responsible for crystal-chemical variations in the solid solutions from illite to aluminoceladonite and from glauconite to celadonite Sample Name: 69 American Mineralogist 95 348-361	2010	Krivoi Rog mining district, Russia	0	293
0019600	Celadonite	Zhukhlistov A P (2005) Crystal structure of celadonite from the electron diffraction data Crystallography Reports 50 902-906	2005	Krivoi mine, Khibiny Massif, Kola Peninsula, Russia	0	293
0006860	Muscovite	Brigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-389	2001	Northwest Nelson - Anatoki River	0	293
0006859	Muscovite	Brigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-389	2001	Northwest Nelson - Campbell Creek	0	293
0006858	Muscovite	Brigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-389	2001	Westland	0	293
0012228	Muscovite	Tomita K, Shiraki K, Kawano M (1998) Crystal structure of dehydroxylated 2M1 sericite and its relationship with mixed-layer mica/smectite Clay Science 10 423-441	1998	Goto mine, Nagasaki Prefecture, Japan	0	293
0012352	Chromphyllite	Evsyunin V G, Kashaev A A, Rastsvetaeva R K (1997) Crystal structure of a new representative of Cr micas Crystallography Reports 42 571-574	1997	Slyudyanka, Irkutsk, Russia	0	293
0006704	Aluminoceladonite	Pavese A, Ferraris G, Prencipe M, Ibberson R (1997) Cation site ordering in phengite 3T from the Dora-Maira massif (western Alps): a variable-temperature neutron powder diffraction study European Journal of Mineralogy 9 1183-1190	1997	Dora-Maira massif, western Alps	0	293
0005446	Boromuscovite	Liang J, Hawthorne F C, Novak M, Cerny P (1995) Crystal-structure refinement of boromuscovite polytypes using a coupled Rietveld-static-structure energy-minimization method The Canadian Mineralogist 33 859-865	1995	Recice, Czech Republic	0	293
0005445	Boromuscovite	Liang J, Hawthorne F C, Novak M, Cerny P (1995) Crystal-structure refinement of boromuscovite polytypes using a coupled Rietveld-static-structure energy-minimization method The Canadian Mineralogist 33 859-865	1995	Recice, Czech Republic	0	293
0006547	Muscovite	Amisano-Canesi A, Chiari G, Ferraris G, Ivaldi G, Soboleva S V (1994) Muscovite- and phengite-3T: crystal structure and conditions of formation European Journal of Mineralogy 6 489-496	1994	Dora-Maira	0	293
0006546	Muscovite	Amisano-Canesi A, Chiari G, Ferraris G, Ivaldi G, Soboleva S V (1994) Muscovite- and phengite-3T: crystal structure and conditions of formation European Journal of Mineralogy 6 489-496	1994	Kazakhstan	0	293
0019597	Muscovite	Knurr R A, Bailey S W (1986) Refinement of Mn-substituted muscovite and phlogopite Clays and Clay Minerals 34 7-16	1986	Minas Gerais, Brazil	0	293
0019604	Muscovite	Rule A C, Bailey S W (1985) Refinement of the crystal structure of phengite-2M1 Clays and Clay Minerals 33 403-409	1985	Rio de Oro, Spanish Sahara	0	293
0014475	Muscovite	Martin-Ramos JD, Rodriguez-Gallego M (1982) Chromian mica from Sierra Nevada, Spain Mineralogical Magazine 46 269-272	1982	Sierra Nevada, Spain	0	293
0014183	Celadonite	Zhukhlistov A P, Zvyagin B B, Lazarenko E K, Pavlishin V I (1977) Refinement of the crystal structure of ferrous celadonite Kristallografiya 22 498-504	1977	Krivoi mine, Khibiny Massif, Kola Peninsula, Russia	0	293
0014740	Muscovite	Rothbauer R (1971) Untersuchung eines 2M1-muskovits mit neutronenstrahlen Neues Jahrbuch fur Mineralogie, Monatshefte 1971 143-154	1971	Diamond mine, Black Hills, South Dakota, USA	0	293
0019602	Muscovite	Guven N (1971) The crystal structures of 2M1 phengite and 2M1 muscovite Zeitschrift fur Kristallographie 134 196-212	1971	pegmatite in Georgia, USA	0	293
0019601	Muscovite	Guven N (1971) The crystal structures of 2M1 phengite and 2M1 muscovite Zeitschrift fur Kristallographie 134 196-212	1971	Tiburon Peninsula, California, USA	0	293
0010646	Muscovite	Guven N, Burnham C W (1967) The crystal structure of 3T muscovite Snohomish County, Washington, USA Zeitschrift fur Kristallographie 125 163-183	1967	in granodiorite near Sunrise Copper Prospect, Sultan Basin,	0	293
0018221	Muscovite	Guven N, Burnham C (1966) The crystal structure of 3T muscovite _cod_database_code 1100014 Carnegie Institution of Washington: Yearbook 65 290-293	1966	Sunrise copper prospect, Snohomish Co, Washington, USA	0	293
0008407	Paragonite	Comodi P, Zanazzi P F (2000) Structural thermal behavior of paragonite and its dehydroxylate: a high-temperature single-crystal study Physics and Chemistry of Minerals 27 377-385	2000		0	298
0006358	Muscovite	Catti M, Ferraris G, Ivaldi G (1989) Thermal strain analysis in the crystal structure of muscovite at 700 C European Journal of Mineralogy 1 625-632	1989		0	298
0005737	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-1180	2001		0	293
0005736	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-1180	2001		0	293
0005735	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 O4 B33 is missing a zero The Canadian Mineralogist 39 1171-1180	2001		0	293
0005734	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-1180	2001		0	293
0005733	Muscovite	Brigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-1180	2001		0	293
0012229	Muscovite	Tomita K, Shiraki K, Kawano M (1998) Crystal structure of dehydroxylated 2M1 sericite and its relationship with mixed-layer mica/smectite Clay Science 10 423-441	1998		0	293
0005550	Muscovite	Liang J, Hawthorne F C, Swainson I P (1998) Triclinic muscovite: X-ray diffraction, neutron diffraction and photo-acoustic FTIR spectroscopy The Canadian Mineralogist 36 1017-1027	1998		0	293
0005549	Muscovite	Liang J, Hawthorne F C, Swainson I P (1998) Triclinic muscovite: X-ray diffraction, neutron diffraction and photo-acoustic FTIR spectroscopy The Canadian Mineralogist 36 1017-1027	1998		0	293
0002023	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C3-31b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002022	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C6Bb from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002021	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C6Cb from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002020	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample B1b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002019	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C3-29b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002018	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample CC1b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-785	1998		0	293
0002017	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample H87b from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-785	1998		0	293
0002016	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample GFS15Ab from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-785	1998		0	293
0002015	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample A4b from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-785	1998		0	293
0002014	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample RA1 from a pegmatite on Antarctica American Mineralogist 83 775-785	1998		0	293
0002013	Muscovite	Brigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample GA1 from a pegmatite on Maddalena Island, Italy American Mineralogist 83 775-785	1998		0	293
0008000	Paragonite	Comodi P, Zanazzi P F (1997) Pressure dependence of structural parameters of paragonite Physics and Chemistry of Minerals 24 274-280	1997		0.00001	293
0001774	Nanpingite	Ni Y, Hughes J M (1996) The crystal structure of nanpingite-2M2, the Cs end-member of muscovite American Mineralogist 81 105-110	1996		0	293
0005485	Muscovite	Liang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-122	1996		0	293
0005484	Muscovite	Liang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-122	1996		0	293
0005483	Muscovite	Liang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-122	1996		0	293
0007910	Muscovite	Comodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-177	1995		0.0001	293
0006533	Muscovite	Catti M, Ferraris G, Hull S, Pavese A (1994) Powder neutron diffraction study of 2M_1 muscovite at room pressure and at 2 GPa European Journal of Mineralogy 6 171-178	1994		0	293
0006359	Muscovite	Catti M, Ferraris G, Ivaldi G (1989) Thermal strain analysis in the crystal structure of muscovite at 700 C T= 700 C European Journal of Mineralogy 1 625-632	1989		0	293
0001080	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0001079	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0001078	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0001077	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0001076	Muscovite	Guggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-550	1987		0	293
0019223	Celadonite	Tsipurskij S I, Drits V A (1986) Refining the crystallographic structure of celadonite Mineralogiceskij Zhurnal 8 32-40	1986		0	293
0000924	Paragonite	Lin C Y, Bailey S W (1984) The crystal structure of paragonite-2M1 American Mineralogist 69 122-127	1984		0	293
0000854	Muscovite	Richardson S M, Richardson J W (1982) Crystal structure of a pink muscovite from Archer's Post, Kenya: Implications for reverse pleochroism in dioctahedral micas American Mineralogist 67 69-75	1982		0	293
0018219	Muscovite	Birle J, Tettenhorst R (1968) Refined Muscovite structure _cod_database_code 1100010 Mineralogical Magazine 36 883-886	1968		0	293
0018279	Muscovite	Gueven N, Burnham C (1966) The Crystal Structure of 3T Muscovite _cod_database_code 1101031 Zeitschrift fur Kristallographie 65 290-293	1966		0	293
0012259	Muscovite	Gatineau L (1963) Localisation des remplacements isomorphiques dans la muscovite _cod_database_code 1000042 Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 256 4648-4649	1963		0	293
0018220	Muscovite	Radoslovich E (1960) The Structure of Muscovite, K Al2 (Si3 Al) O10 (O H)2 _cod_database_code 1100012 Acta Crystallographica 13 919-932	1960		0	293
0008408	Paragonite	Comodi P, Zanazzi P F (2000) Structural thermal behavior of paragonite and its dehydroxylate: a high-temperature single-crystal study Physics and Chemistry of Minerals 27 377-385	2000		0	483
0008409	Paragonite	Comodi P, Zanazzi P F (2000) Structural thermal behavior of paragonite and its dehydroxylate: a high-temperature single-crystal study Physics and Chemistry of Minerals 27 377-385	2000		0	723
0008410	Paragonite	Comodi P, Zanazzi P F (2000) Structural thermal behavior of paragonite and its dehydroxylate: a high-temperature single-crystal study Physics and Chemistry of Minerals 27 377-385	2000		0	873
0008001	Paragonite	Comodi P, Zanazzi P F (1997) Pressure dependence of structural parameters of paragonite Physics and Chemistry of Minerals 24 274-280	1997		0.05	293
0007908	Muscovite	Comodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-177	1995		0.05	293
0006534	Muscovite	Catti M, Ferraris G, Hull S, Pavese A (1994) Powder neutron diffraction study of 2M_1 muscovite at room pressure and at 2 GPa European Journal of Mineralogy 6 171-178	1994		2	293
0008002	Paragonite	Comodi P, Zanazzi P F (1997) Pressure dependence of structural parameters of paragonite Physics and Chemistry of Minerals 24 274-280	1997		2.54	293
0007911	Muscovite	Comodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-177	1995		2.7	293
0007909	Muscovite	Comodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-177	1995		2.8	293
0008003	Paragonite	Comodi P, Zanazzi P F (1997) Pressure dependence of structural parameters of paragonite Physics and Chemistry of Minerals 24 274-280	1997		4.05	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Tobelite'
loop_
_publ_author_name
'Mesto E'
'Scordari F'
'Lacalamita M'
'Schingaro E'
_journal_name_full 'American Mineralogist'
_journal_volume 97 
_journal_year 2012
_journal_page_first 1460
_journal_page_last 1468
_publ_section_title
;
 Tobelite and NH4+ -rich muscovite single crystals from Ordovician Armorican
 sandstones (Brittany, France): Structure and crystal chemistry
 Note: sample tob_7
;
_database_code_amcsd 0019255
_chemical_compound_source 'Ordovician Armorican sandstones, Brittany, France'
_chemical_formula_sum 'K.201 N.78 H3 Al2.872 Si3.128 O12'
_cell_length_a 9.024
_cell_length_b 5.2055
_cell_length_c 20.825
_cell_angle_alpha 90
_cell_angle_beta 99.995
_cell_angle_gamma 90
_cell_volume 963.396
_exptl_crystal_density_diffrn      2.614
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
K   0.00000   0.11400   0.25000   0.20100   0.02570
N   0.00000   0.11400   0.25000   0.78000   0.02570
H   0.00000   0.11400   0.25000   3.12000   0.02570
AlM2   0.08220   0.24920  -0.00020   1.00000   0.01090
SiT1   0.12160   0.58520   0.13160   0.78200   0.01180
AlT1   0.12160   0.58520   0.13160   0.21800   0.01180
SiT2   0.29380   0.10480   0.13180   0.78200   0.01290
AlT2   0.29380   0.10480   0.13180   0.21800   0.01290
O1   0.07700   0.55800   0.05260   1.00000   0.01240
O2   0.27000   0.13600   0.05280   1.00000   0.01640
O3   0.19500   0.32000   0.16400   1.00000   0.02070
O4   0.47000   0.14800   0.16330   1.00000   0.01690
O5   0.24800   0.81400   0.15310   1.00000   0.01410
O-H6   0.95600   0.05700   0.04800   1.00000   0.01530
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
K 0.02990 0.01900 0.02600 0.00000 -0.00100 0.00000
N 0.02990 0.01900 0.02600 0.00000 -0.00100 0.00000
H 0.02990 0.01900 0.02600 0.00000 -0.00100 0.00000
AlM2 0.00870 0.00400 0.02000 0.00100 0.00400 0.00300
SiT1 0.00480 0.00500 0.02700 -0.00100 0.00700 0.00100
AlT1 0.00480 0.00500 0.02700 -0.00100 0.00700 0.00100
SiT2 0.00850 0.00100 0.03000 0.00100 0.00500 -0.00100
AlT2 0.00850 0.00100 0.03000 0.00100 0.00500 -0.00100

Synonyms of Dioctahedral micaHide

Muscovite Subgroup

Relationship of Dioctahedral mica to other SpeciesHide

Member of:

Mica Group

Other Members of Mica Group:

Montdorite	KFe²⁺_1.5Mn²⁺_0.5Mg_0.5Si₄O₁₀(F,OH)₂	Mon. 2/m : B2/m
Trioctahedral mica	A major subgroup of the micas, where there are three octahedrally coordinated D cations per formula unit.
'UM1988-22-SiO:AlCaFFeHKLiMg'	KLiMgAl₂Si₃O₁₀F₂	Mon.
'UM2003-27-SiO:AlCsFFeHLi'	CsFe²⁺₃(Si₃Al)O₁₀(F,OH)₂
'UM2003-28-SiO:AlCsFFeHMg'	Cs(Mg,Fe)₃(Si₃Al)O₁₀(F,OH)₂
'UM2003-30-SiO:AlFLiRb'	RbLi₂AlSi₄O₁₀(F,OH)₂
'UM2003-31-SiO:AlHFeRb'	RbFe²⁺₃(Si₃Al)O₁₀(OH,F)₂
'Unnamed Nickel-rich Mica'	K_0.5(Ni_1.5 Al_0.6 Cr_0.4 Mg_0.2 Fe_0.1) (Si_3.3 Al_0.7)O₁₀(OH)₂
Voloshinite	Rb(LiAl_1.5◻_0.5)(Al_0.5Si_3.5)O₁₀F₂	Mon. 2/m : B2/b
Yangzhumingite	KMg_2.5(Si₄O₁₀)F₂	Mon. 2/m : B2/m

Dioctahedral mica Members:

Celadonite Subgroup
Aluminoceladonite	K(MgAl◻)(Si₄O₁₀)(OH)₂	Mon. 2/m : B2/m
Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂	Mon. 2/m : B2/m
Chromceladonite	K(MgCr◻)(Si₄O₁₀)(OH)₂	Mon. 2 : B2
Ferroaluminoceladonite	K(Fe²⁺Al◻)(Si₄O₁₀)(OH)₂	Mon. 2/m : B2/m
Ferroceladonite	K(Fe²⁺Fe³⁺◻)(Si₄O₁₀)(OH)₂	Mon. 2/m : B2/m
Manganiceladonite	K(MgMn³⁺◻)(Si₄O₁₀)(OH)₂	Mon.
'Unnamed (V-analogue of Celadonite)'	K(MgV◻)(Si₄O₁₀)(OH)₂
Boromuscovite	KAl₂(BSi₃O₁₀)(OH)₂	Mon. 2/m
Chromphyllite	KCr₂(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/b
'Glauconite'	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/b
Nanpingite	CsAl₂(AlSi₃O₁₀)(OH,F)₂	Mon. 2/m : B2/b
'Natro-glauconite'	(Na,K)(Fe³⁺,Al,Mg)₂((Si,Al)₄O₁₀)(OH)₂
Paragonite	NaAl₂(AlSi₃O₁₀)(OH)₂	Mon.
Roscoelite	KV³⁺₂(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/b
Tobelite	(NH₄)Al₂(AlSi₃O₁₀)(OH)₂	Mon. 2/m : B2/m

Click on any node to view relationships. Formula-derived relationship network for the group members above. Use Find related species to add formula-neighbour species outside the current group view. Solid links show inferred chemical differences; dashed violet links show same-formula crystallographic differences. Hydration states are not treated as relationship changes. These relationships do not imply any real-world substitution reactions between these species.

Other InformationHide

Health Risks:

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

Dioctahedral mica in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for Dioctahedral micaHide

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https://www.mindat.org/min-53391.html
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References for Dioctahedral micaHide

Reference List:

Significant localities for Dioctahedral micaHide

Showing 45 significant localities out of 39,086 recorded on mindat.org.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

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Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Austria
Lower Austria Wiener Neustadt-Land District Lanzenkirchen ⓘ Frohsdorf	[Aluminoceladonite] Rieder et al. (1998)
Wiesmath ⓘ Anna chapel	[Aluminoceladonite] rruff.info (2023)

Canada
Québec Abitibi-Témiscamingue La Vallée-de-l'Or RCM Réservoir-Dozois ⓘ Cabonga Reservoir	[Muscovite] Olivier Langelier Collection

China
Fujian Nanping Yanping District Nanping pegmatite field ⓘ Pegmatite No. 31	[Nanpingite] Rao +5 other references

Germany
Saxony Zwickau District Zwickau ⓘ Planitz	[Celadonite]

Italy
Liguria La Spezia Province Borghetto di Vara ⓘ Cerchiara Mine	[Manganiceladonite] Hålenius et al. (2015) +1 other reference
Trentino-Alto Adige/Südtirol Trento Province Brentonico ⓘ Malga Canalece-San Valentino	[Celadonite] Exel (1987)
Mori ⓘ Tierno-Besagno	[Celadonite] Exel (1987)

Japan
Ehime Prefecture Iyo district Tobe-cho ⓘ Ohgidani clay deposit	[Tobelite] Higashi (1982)
Hiroshima Prefecture Kamo District ⓘ Horou deposit	[Tobelite] Min.Journ.Japan (1982) +1 other reference

New Zealand
Southland Region Southland District ⓘ Hokonui Hills	[Ferroaluminoceladonite, Ferroceladonite] Li et al. (1997)

Peru
Ancash Pallasca Province Pampas District ⓘ Pasto Bueno	[Muscovite] collections of Rock Currier +1 other reference

Russia
Republic of Karelia Medvezhyegorsky District Zaonezhie peninsula ⓘ Srednyaya Padma mine	[Chromceladonite, Unnamed (V-analogue of Celadonite)] Frank K. Mazdab collection +2 other references
Slyudyanka Pokhabikha River Valley ⓘ Kaber's pit	[Chromphyllite] Reznitsky et al. (1997) +1 other reference

Switzerland
Ticino Leventina Faido Chironico Valley ⓘ Sponda Alp - Pizzo Forno	[Paragonite] Schaller et al. (1941) +3 other references
Valais Martigny Mont Chemin mining district ⓘ Martigny road tunnel	[Muscovite]

UK
Wales Carmarthenshire ⓘ Llandybie (Llandebie)	[Paragonite var: Brammallite] DAN Earth Sci. 208 (1973) +1 other reference

Ukraine
Lviv Oblast Stryi Raion Skole ⓘ Klódka quarry (Kłódka quarry)	[Glauconite, Glauconite var: Skolite] www.minsocam.org (2012)

USA
Alabama Clay County ⓘ M&G Mine	[Muscovite] Anonymous. (1965) +1 other reference
Arizona Mohave County Virgin Mountains Virgin Peak (Bunkerville Mountain) Hummingbird claims ⓘ Chad Mountain Pegmatite	[Muscovite] Solomon Feinstein Collection. +1 other reference
California El Dorado County West Belt Coloma Mining District Coloma ⓘ Stuckslager Mine (Stuckslacker Mine; Sam Simms Mine)	[Roscoelite] www.eldoradolibrary.org +7 other references
ⓘ Mariposa County	[Phengite var: Mariposite] Bowen et al. (1957) +2 other references
San Diego County Ramona Mining District Ramona Little Three Mine area ⓘ Little Three Mine	[Boromuscovite] Foord et al. (1989) +2 other references
San Luis Obispo County Santa Lucia Mts (Santa Lucia Range) San Simeon ⓘ Beach cliffs	[Muscovite] Ron Layton Collection
Connecticut Fairfield County Redding Branchville ⓘ Fillow Quarry	[Muscovite] Cameron +7 other references
Hartford County Glastonbury South Glastonbury ⓘ Simpson Quarry (Wiarda Quarry)	[Muscovite] Rocks & Min 74:121 (1999) +1 other reference
Middlesex County East Hampton ⓘ Nathan Hall Quarry	[Muscovite] LMSCC Newsletter +1 other reference
Haddam Haddam Neck ⓘ Gillette Quarry (J-J Mine; Haddam Neck Quarry)	[Muscovite, Muscovite var: Schernikite] Bowman (1902) +2 other references
ⓘ Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry)	[Muscovite var: Schernikite] Adam Berlutti collection
Portland Collins Hill Strickland pegmatite ⓘ Strickland Quarry	[Muscovite] USGS Professional Paper 255: 333-338. +2 other references
ⓘ Pelton's Quarry	[Muscovite] Januzzi et al. (1976)
New Haven County ⓘ Naugatuck	[Muscovite] Anthony Scalzi collection
Illinois Calhoun County Gilead ⓘ Maquoketa Shale	[Muscovite var: Illite] GSA Bulletin +3 other references
Maine Sagadahoc County Topsham ⓘ Fisher Quarry	[Muscovite var: Schernikite] Cliff Trebilcock collection +1 other reference
New York Rockland County Town of Ramapo ⓘ Wesley Hills	[Celadonite] Hershel Friedman collection (2007)
North Carolina Catawba County Hickory ⓘ Martin Marietta Quarry (Hickory Quarry)	[Muscovite] K. Wood collection
Mitchell County Spruce Pine ⓘ Chestnut Flats Mine	[Muscovite] - (2005)
Pennsylvania Delaware County Middletown Township ⓘ Sharpless' Quarry (Sharpless Quarry)	[Muscovite] Gordon (1922)
South Dakota Pennington County Keystone Mining District Keystone ⓘ Etta Mine	[Muscovite] Dana 6: 1088 +5 other references
Texas Burnet County ⓘ Cactus Jack pegmatite	[Muscovite] F Roberts
Utah San Juan County La Sal Creek Mining District ⓘ Firefly–Pigmay Mine	[Glauconite] Färber (n.d.)

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