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Toshio Sudo
White to light green
Pearly, Earthy
2½ - 3½
Crystal System:
Member of:
Named by W. von Engelhardt, G. Müller, and H. Kromer in honor of Toshio Sudo (1911-2000), professor of mineralogy, University of Tokyo, Japan. He was an expert in clay mineralogy, especially in the alteration processes by which clay minerals are formed. The mineral tosudite is also named in his honor.
A dioctahedral chlorite.

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Classification of SudoiteHide

Approval Year:

9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
4 : Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra

16 : Silicates Containing Aluminum and other Metals
19 : Aluminosilicates of Fe and Mg

Physical Properties of SudoiteHide

Pearly, Earthy
White to light green
2½ - 3½ on Mohs scale

Optical Data of SudoiteHide

Biaxial (-)
RI values:
nα = 1.581 - 1.583 nβ = 1.584 - 1.589 nγ = 1.591 - 1.601
Measured: 64° to 70°, Calculated: 68° to 72°
Max Birefringence:
δ = 0.010 - 0.018
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of SudoiteHide

IMA Formula:
Common Impurities:

Crystallography of SudoiteHide

Crystal System:
Cell Parameters:
a = 5.23 Å, b = 9.07 Å, c = 14.28 Å
β = 97.03°
a:b:c = 0.577 : 1 : 1.574
Unit Cell V:
672.30 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
14.2 (80)
4.74 (80)
4.52 (85)
3.55 (65)
2.501 (100)
2.409 (50)
1.511 (60)

Type Occurrence of SudoiteHide

Synonyms of SudoiteHide

Other Language Names for SudoiteHide

Simplified Chinese:铝绿泥石

Relationship of Sudoite to other SpeciesHide

Member of:
Other Members of this group:
ClinochloreMg5Al(AlSi3O10)(OH)8Mon. 2/m : B2/m
Cookeite(Al2Li)Al2(AlSi3O10)(OH)8Mon. 2/m
DonbassiteAl4.33(AlSi3O10)(OH)8Mon. 2 : B2
FranklinfurnaceiteCa2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8Mon. 2 : B2
GlagoleviteNa(Mg,Al)6(AlSi3O10)(OH,O)8Tric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
Manganite1 photo of Sudoite associated with Manganite on

Related Minerals - Nickel-Strunz GroupingHide

9.EC.05MinnesotaiteFe2+3Si4O10(OH)2Tric. 1 : P1
9.EC.05TalcMg3Si4O10(OH)2Tric. 1 : P1
9.EC.10PyrophylliteAl2Si4O10(OH)2Tric. 1
9.EC.15CeladoniteK(Mg,Fe2+)Fe3+(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.15MuscoviteKAl2(AlSi3O10)(OH)2Mon. 2/m : B2/b
9.EC.15RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2Mon. 2/m : B2/b
9.EC.15ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2Mon. 2/m : B2/b
9.EC.15FerroaluminoceladoniteK(Fe2+,Mg)(Al,Fe3+)(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.15FerroceladoniteK(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.20AnniteKFe2+3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20HendricksiteK(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20NorrishiteKLiMn3+2(Si4O10)O2Mon. 2/m : B2/m
9.EC.20PhlogopiteKMg3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20PolylithioniteKLi2Al(Si4O10)(F,OH)2Mon. 2/m : B2/b
9.EC.20FluorotetraferriphlogopiteKMg3(Fe3+Si3O10)F2Mon. 2/m : B2/m
9.EC.20Wonesite(Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4Mon. 2/m : B2/m
9.EC.20TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2Mon. 2/m : B2/b
9.EC.20ShirokshiniteKNaMg2(Si4O10)F2Mon. 2/m : B2/m
9.EC.20ShirozuliteK(Mn2+,Mg)3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20AspidoliteNaMg3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20FluorophlogopiteKMg3(AlSi3O10)(F,OH)2Mon. 2/m : B2/m
9.EC.20Suhailite(NH4)Fe2+3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20YangzhumingiteKMg2.5(Si4O10)F2Mon. 2/m : B2/m
9.EC.20OrloviteKLi2Ti(Si4O10)OFMon. 2 : B2
9.EC.20OxyphlogopiteK(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2Mon. 2/m : B2/m
9.EC.35Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2Mon. 2/m : B2/b
9.EC.35BityiteLiCaAl2(AlBeSi2O10)(OH)2Mon. 2/m : B2/b
9.EC.35ClintoniteCa(Mg,Al)3(Al3SiO10)(OH)2Mon. 2/m : B2/m
9.EC.35Oxykinoshitalite(Ba,K)(Mg,Ti,Fe3+,Fe2+)3((Si,Al)4O10)(O,OH,F)2Mon. 2/m : B2/m
9.EC.35FluorokinoshitaliteBaMg3(Al2Si2O10)F2Mon. 2/m : B2/m
9.EC.40Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.40Kurumsakite(Zn,Ni,Cu)8Al8V5+2Si5O35 · 27H2O (?)
9.EC.40Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2OMon. 2/m : B2/m
9.EC.40NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.40VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2OMon.
9.EC.40Yakhontovite(Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2OMon.
9.EC.45SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.45SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2OMon.
9.EC.45SpadaiteMgSiO2(OH)2 · H2O (?)
9.EC.45SwineforditeLi(Al,Li,Mg)4((Si,Al)4O10)2(OH,F)4 · nH2OMon.
9.EC.45ZincsiliteZn3(Si4O10)(OH)2 · 4H2OMon.
9.EC.45FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
9.EC.50VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2OMon. 2/m
9.EC.55ClinochloreMg5Al(AlSi3O10)(OH)8Mon. 2/m : B2/m
9.EC.55Cookeite(Al2Li)Al2(AlSi3O10)(OH)8Mon. 2/m
9.EC.55FranklinfurnaceiteCa2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8Mon. 2 : B2
9.EC.55DonbassiteAl4.33(AlSi3O10)(OH)8Mon. 2 : B2
9.EC.55GlagoleviteNa(Mg,Al)6(AlSi3O10)(OH,O)8Tric. 1 : P1
9.EC.60AliettiteCa0.2Mg6((Si,Al)8O20)(OH)4 · 4H2OMon.
9.EC.60Corrensite(Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2OOrth.
9.EC.60HydrobiotiteK(Mg,Fe2+)6((Si,Al)8O20)(OH)4 · nH2OMon.
9.EC.60Karpinskite(Ni,Mg)2Si2O5(OH)2 (?)
9.EC.60Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2OMon.
9.EC.60TosuditeNa0.5(Al,Mg)6((Si,Al)8O18)(OH)12 · 5H2OMon. 2 : B2
9.EC.60BrinrobertsiteNa0.3Al4(Si4O10)2(OH)4 · 3.5 H2OMon.
9.EC.70BurckhardtitePb2(Fe3+Te6+)[AlSi3O8]O6Trig. 3m (3 2/m) : P3 1m
9.EC.75Ferrisurite(Pb,Ca)2.4Fe3+2(Si4O10)(CO3)1.7(OH)3 · nH2OMon.
9.EC.75Niksergievite(Ba,Ca)2Al3(AlSi3O10)(CO3)(OH)6 · nH2OMon.

Related Minerals - Dana Grouping (8th Ed.)Hide 2 : B2 2/m 2/m : B2/m,Mg,Al)6((Si,Al)4O10)(OH)8Mon.,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8Tric.,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.19.1IndialiteMg2Al3(AlSi5O18)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
16.19.2Cordierite(Mg,Fe)2Al3(AlSi5O18)Orth. mmm (2/m 2/m 2/m) : Cccm
16.19.5StauroliteFe2+2Al9Si4O23(OH)Mon. 2/m : B2/m
16.19.6Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2Mon. 2/m : B2/b
16.19.7AmesiteMg2Al(AlSiO5)(OH)4Tric. 1 : P1
16.19.9YoderiteMg(Al,Fe3+)3(SiO4)2O(OH)Mon. 2/m : P21/m
16.19.11Ferrocarpholite(Fe2+,Mg)Al2(Si2O6)(OH)4Orth. mmm (2/m 2/m 2/m) : Ccca
16.19.15Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4Mon. m : Bm
16.19.16Odinite(Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4Mon. m : Bm
16.19.17ClinochloreMg5Al(AlSi3O10)(OH)8Mon. 2/m : B2/m
16.19.22VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2OMon. 2/m
16.19.23Corrensite(Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2OOrth.

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.

References for SudoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Brindley, G.W., Gillery, F.H, (1956) X-ray identification of chlorite species. American Mineralogist: 41: 169-186.
Weaver, C.E. (1958) Geologic interpretation of argillaceous sediments Part I. Origin and significance of clay minerals in sedimentary rocks. Bulletin of the American Association of Petroleum Geologists: 42: 254-271.
Brydon, J.E., Clark, J.S., Osborne, V. (1961) Dioctahedral chlorite. The Canadian Mineralogist: 6: 595-609.
von Engelhardt, W., Müller, G., Kromer, H. (1962) Dioktaedrischer Chlorit ("Sudoit") in Sedimenten des Mittleren Keupers von Plochingen (Württ.). Naturwissenschaften: 49: 205-206.
Fleischer, M. (1963) New mineral names. American Mineralogist: 48: 209-217.
Eggleston, R.A., Bailey, S.W. (1967) Structural aspects of dioctahedral chlorite. American Mineralogist: 52: 673-689.
Aleksandrova, V.A., Drits, V.A., Sokolova, G.V. (1973) Crystal structure of ditrioctahedral chlorite. Soviet Physics - Crystallography: 18: 50-53.
Percival, J.B., Kodama, H. (1989) Sudoite from Cigar Lake, Saskatchewan. The Canadian Mineralogist: 27: 633-641.
(1992) Minerali: 4(2): 161.
Jambor, J.L., Puziewicz, J. (1992) New mineral names. American Mineralogist: 77: 1116-1121.
Theye, T., Seidel, E., Vidal, O. (1992) Carpholite, sudoite, chloritoid in low-grade high-pressure metapelites from Crete and the Peloponnese, Greece. European Journal of Mineralogy: 4: 487-507.
Vidal, O., Goffé, B., Theye, T. (1992) Experimental study of the stability of sudoite and magnesiocarpholite and calculation of a new petrogenic grid for the system FeO-MgO-Al2O3-SiO2-H2O. Journal of Metamorphic Geology: 10: 603-614.
Ruiz Cruz, M.D., Sanz de Galdeano, C. (2005) Compositional and structural variation of sudoite from the Betic Cordillera (Spain): a TEM/AEM study. Clays and Clay Minerals: 53: 639-652.
Kameda, J., Miyawaki, R., Kitagawa, R., Kogure, T. (2007) XRD and HRTEM analyses of stacking structures in sudoite, di-trioctahedral chlorite. American Mineralogist: 92: 1586-1592.

Internet Links for SudoiteHide

Localities for SudoiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Hainaut Province (Henegouwen; Hennegau)
    • Montigny-le-Tilleul
Hatert, F., Deliens, M., Fransolet, A.-M. & van der Meersche, E. (2002): Les minéraux de Belgique. 2ème édition, Muséum des Sciences Naturelles, Bruxelles, Ed., 304 p.
  • Liège Province
    • Stavelot Massif
Hatert, F., Blondieau, M., Puccio, S., Baijot, M. et Gustine, C. (2014) - Le gisement de manganèse de la vallée de la Lienne, Belgique. Le Règne Minéral, 117, pp. 5-28, editions du Piat.
  • Luxembourg Province
    • Stavelot Massif
      • Vielsalm
Jose Dehove collection
Hatert, F., Deliens, M., Fransolet, A.-M. & van der Meersche, E. (2002): Les minéraux de Belgique. 2ème édition, Muséum des Sciences Naturelles, Bruxelles, Ed., 304 p.
        • Salmchâteau
- Blondieau, M. (2005): Les gisements minéraux du Salmien dans le massif de Stavelot. Published by M. Blondieau, Tellin, Belgium, 90 pp.
  • Alberta
    • Maybelle River project (Maybelle River shear zone)
  • Nunavut
    • Kivalliq Region
      • Baker Lake
RIEGLER, T., LESCUYER, J.-L., WOLLENBERG, P., QUIRT, D. & BEAUFORT, D. (2014) Alteration related to uranium deposits in the Kiggavik-Andrew Lake structural trend,Nunavut, Canada: New insight from petrography and clay mineralogy. Canadian Mineralogist 52, 27-46.
  • Ontario
    • Thunder Bay District
      • Gemmell Township; Canadian Mineralogist Vol. 30,pp. 1127-1142 (1992)
  • Saskatchewan
    • Athabasca Basin
Reid, K.D., Creighton, S. & Potter, E.G. (2016) Composition of large zoned aluminum phosphate sulfate minerals: implications for fluid evolution in the Centennial uranium deposit area, Athabasca basin, Saskatchewan, Canada. Canadian Mineralogist 54, 1205-1228.
Canadian Mineralogist, Vol. 27: 633-641; Geological Association of Canada (2014) Abstracts Fredericton Vol 37; Adlakha, E.E. & Hattori, K. (2016): Paragenesis and composition of tourmaline types along the P2 fault and Mcarthur River uranium deposit, Athabasca Basin, Canada. Canadian Mineralogist, 54, 661-679.
  • Fujian Province
    • Fuzhou Prefecture
      • Jin'an District
        • Shoushan
Jiang Aigeng (1995): Journal of Fuzhou University, Natural Sciences Edition 23(1)
  • Guangxi Zhuang Autonomous Region
    • Baise Prefecture
Yaxiu Yang, Sumei Di, and Wei Zhang (1992): Acta Mineralogica Sinica 12(3), 206-213
  • Occitanie
    • Tarn
      • Castelnau-de-Brassac
        • Fumade
Lheur, C. & Meisser, N. (2013): Nouveautés à Fumade (Tarn): clinobisvanite, meurigite-K, sigloite et sudoite. Le Règne Minéral, 110, 52-53.
  • Haut-Ogooué Province
    • Franceville
Dymkov, Y., Holliger, P., Pagel, M., Gorshkov, A., and Artyukhina, A. (1997): Mineralium Deposita 32, 617-620.
  • Baden-Württemberg
    • Black Forest
      • Triberg
K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
    • Stuttgart
      • Plochingen
        • Lützelbach
Amer.Min.(1963) 48, 213
  • Hesse
    • Cornberg
Müller, G. (1967): Contributions to Mineralogy and Petrology 14, 176-189.
  • Saxony-Anhalt
    • Harz
Theye, T., & Siedel, H. (1993). Chloritoid, carpholite and sudoite in very low-grade metamorphic rocks of the Wippra Metamorphic Zone (Harz, Germany). Neues Jahrbuch fur Mineralogie-Monatshefte, (2), 73-96.
  • Thuringia
    • Harz
      • Nordhausen
        • Ilfeld
XRD and SEM-EDX analysis (T. Witzke)
  • Crete Department (Kriti)
    • Crete Island (Kriti)
      • Lasithi Prefecture
        • Sitía
          • Rousa Eklissia (Roússa Ekklissia)
Eur. J. Mineral. , 1992, 4, pp. 487-507.
Eur. J. Mineral. , 1992, 4, pp. 487-507.
  • Borsod-Abaúj-Zemplén Co.
    • Bükk Mts
      • Miskolc
Mineral Species of Hungary, 2005
  • Veszprém Co.
    • Bakony Mts
      • Eplény
Koch: Minerals of Hungary, 1985
  • Lombardy
    • Sondrio Province
      • Valtellina
        • Valfurva
Bedognè,F,,Montrasio; A. & Sciesa;E. (2006): I minerali della media-alta Valtellina delle Orobie valtellinesi e della Val Poschiavo. Bettini, Sondrio, Italia, 255.
Bedognè, F., Montrasio, A., Sciesa, E. (2006) I minerali della media-alta Valtellina, delle Orobie valtellinesi e della Val Poschiavo. Aggiornamenti sulle altre località della provincia di Sondrio. Bettini, Sondrio, 255 pp.
Luigi Chiappinno
Bedognè, F., Montrasio, A., Sciesa, E. (2006) I minerali della media-alta Valtellina, delle Orobie valtellinesi e della Val Poschiavo. Aggiornamenti sulle altre località della provincia di Sondrio. Bettini, Sondrio, 255 pp.
  • Tuscany
    • Grosseto Province
No reference listed
Costantini A., Decandia F.A., Elter F.M., Franceschelli M., Giorgetti G., Lazzarotto A., Liotta D., Memmi I., Sandrelli F., Tavernelli E. (1995): Low-temperature metamorphism in Southern Tuscany: P-T indicators and geodynamic implications. Workshop on Low-T Metamorphism, Siena, 24-26/5/1995. Guidebook for the Post-Workshop Field Excursion, 1-35; Reinhardt J., Rossetti F. (2004): Monte Argentario and Isola del Giglio (Southern Tuscany, Italy): a record from continental break-up to subduction, orogenic wedge formation, and post-orogenic extension. 32nd International Geological Congress (IGC), Florence, August 20-28, 2004. Post-Congress P61. Field Trip Guide Book - P61, 19 pp.; Theye T., Reinhardt J., Goffé B., Jolivet L., Brunet C. (1997): Ferro- and magnesiocarpholite from the Monte Argentario (Italy): First evidence for high-pressure metamorphism of the metasedimentary Verrucano sequence, and significance for P-T path reconstruction. Eur. J. Mineral., 9, 859-873.
Giorgetti G., Goffé B., Memmi I., Nieto F. (1998): Metamorphic evolution of Verrucano metasediments in northern Apennines: new petrological constraints. Eur. J. Mineral., 10, 1295-1308.
    • Lucca Province
      • Apuan Alps
        • Vagli di Sotto
Orlandi, P. & Campostrini, I. (2005): Zibaldone. Aggiornamenti di mineralogia italiana 2004. Rivista Mineralogica Italiana, 3/2005, 184-191
  • Hokkaido
    • Iburi Province
      • Shiraoi-gun
        • Shiraoi-cho
米田哲朗. (1989). 北海道南白老重晶石・カオリン鉱床の粘土鉱物組成. 粘土科学, 29(2), 69-80.
  • Honshu Island
    • Chugoku Region
      • Okayama Prefecture
        • Bizen City
Cureton label
        • Ihara City (Ibara City)
          • Higashi-Mihara
Akira Kato (2011) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, No. 34 (January, 2011).
    • Tohoku Region
      • Akita Prefecture
        • Kosaka
Bailey, S. W., & Lister, J. S. (1989). Structures, compositions, and X-ray diffraction identification of dioctahedral chlorites. Clays and Clay Minerals, 37(3), 193-202.
          • Kosaka mine
Bailey, S. W., & Lister, J. S. (1989). Structures, compositions, and X-ray diffraction identification of dioctahedral chlorites. Clays and Clay Minerals, 37(3), 193-202.
        • Odate
Bailey, S. W., & Lister, J. S. (1989). Structures, compositions, and X-ray diffraction identification of dioctahedral chlorites. Clays and Clay Minerals, 37(3), 193-202.
Kimbara K., Nagata H. (1974) Clay minerals in the core samples of the mineralized zone of Niida, Southern part of Odate, Akita prefecture, Japan, with special reference to the mineralogical properties of sudoite and tosudite, - J. Japan Miner. Economic Geology, 69(7), p.239-254.
      • Aomori Prefecture
Dana VIII; Bailey, S. W., & Lister, J. S. (1989). Structures, compositions, and X-ray diffraction identification of dioctahedral chlorites. Clays and Clay Minerals, 37(3), 193-202.
  • Kyushu Region
    • Kagoshima Prefecture
Kawano, M., & Tomita, K. (1991). Mineralogy and genesis of clays in postmagmatic alteration zones, Makurazaki volcanic area, Kagoshima Prefecture, Japan. Clays and Clay Minerals, 39(6), 597-608.
  • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
    • Betpakdala Desert (Bet-Pak-Dal Desert)
  • Svalbard
    • Spitsbergen
Agard, P., Labrousse, L., Elvevold, S., & Lepvrier, C. (2005). Discovery of Paleozoic Fe-Mg carpholite in Motalafjella, Svalbard Caledonides: A milestone for subduction-zone gradients. Geology, 33(10), 761-764.
Republic of Macedonia
  • Prilep
Altherr, R., Soder, C., Meyer, H.-P., Ludwig, T., Böhm, M. (2017): Ardennite within a high-P/T metamorphic conglomerate near Vitoliste in the westernmost Vardar zone, Republic of Macedonia. European Journal of Mineralogy, 29, (in press).
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Ekaterinburg (Sverdlovsk)
          • Berezovskii (Berezovskii Zavod)
            • Berezovskoe Au Deposit (Berezovsk Mines)
- Yushkin N.P., Ivanov O.K., Popov V.A. (1986) Introduction in topomineralogy of Ural. Nauka, Moscow, 294 pp. (in Russian).
South Africa
  • Free State Province
    • Lejweleputswa District
      • Witwatersrand field
Minerals of South Africa
  • Andalusia
    • Almería
      • Adra
B. Goffé et al. , Eur. J. Mineral. , 1996, 8, pp. 335-348.
    • Granada
      • Salobreña unit
B. Goffé et al. , Eur. J. Mineral. , 1996, 8, pp. 335-348.
J.M. Azanon and B. Goffé, Eur. J. Mineral., 1997, 9, pp. 1035-1051.
  • Asturias
    • Pola de Lena
Niels van Velzen collection Mindat Photo ID: 619034. Obtained from dealer Münchener Mineralienfreunde at Mineralientage 2009, Munich, Germany.
  • Michigan
    • Marquette Co.
      • Marquette iron range
        • Negaunee
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Bailey, S. W., & Lister, J. S. (1989). Structures, compositions, and X-ray diffraction identification of dioctahedral chlorites. Clays and Clay Minerals, 37(3), 193-202.
  • New York
    • Westchester Co.
      • Peekskill
Alfredo Petrov specimens (ID confirmed by microprobe)
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