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Mg6Al2CO3(OH)16 · 4H2O
White, brownish
Waxy, Pearly
First found by Prof. K. J. A. Theodor Scheerer (1813-1875) at Snarum, Buskerud, Norway. Named in 1842 by Carl Christian Hochstetter in allusion its high water content ('Hydro-') and to its resemblance to talc.
Is a member of the hydrotalcite group and hydrotalcite supergroup.

May be confused with meixnerite. Compare also quintinite. Hydrotalcite-2H, formerly manasseite, was discredited as a polytype of hydrotalcite by Mills et al. (2012). Hydrotalcite from Snarum, Norway, is dominated by the 3R polytype (Mills et al., 2016).

Classification of Hydrotalcite

Approved, 'Grandfathered' (first described prior to 1959)

D : Carbonates with additional anions, with H2O
A : With medium-sized cations

6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1

11 : Carbonates
7 : Carbonates of Al

Physical Properties of Hydrotalcite

Waxy, Pearly
Diaphaneity (Transparency):
White, brownish
Hardness (Mohs):
2.03 - 2.09 g/cm3 (Measured)    2 g/cm3 (Calculated)

Optical Data of Hydrotalcite

Uniaxial (-)
RI values:
nω = 1.511 - 1.531 nε = 1.495 - 1.529
Max Birefringence:
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of Hydrotalcite

IMA Formula:
Mg6Al2CO3(OH)16 · 4H2O

Crystallography of Hydrotalcite

Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Unit Cell Volume (calc):
Mg6Al2(CO3)(OH)16 · 4H2O
a = 3.1 Å, c = 15.32 Å
a:c = 1 : 4.942
V 127.50 ų
(Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
7.69 (100)
3.88 (70)
2.58 (20)
2.30 (20)
1.96 (20)
1.53 (20)
1.50 (20)

Type Occurrence of Hydrotalcite

General Appearance of Type Material:
As contorted, lamellar-to-fibrous white
masses of waxy or pearly lustre.
Place of Conservation of Type Material:
Neotypes is deposited at the Museum für Naturkunde Berlin, Germany. Samples MFN_MIN_1998_2751 and MFN_MIN_1998_2758 ( labelled by Gustav Rose).
Geological Setting of Type Material:
A serpentine-magnesite body

Relationship of Hydrotalcite to other Species

Other Members of Group:
DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O
DroninoiteNi6Fe32+(OH)16Cl2 · 4H2O
IowaiteMg6Fe23+(OH)16Cl2 · 4H2O
MeixneriteMg6Al2(OH)16(OH)2 · 4H2O
PyroauriteMg6Fe23+(OH)16[CO3] · 4H2O
ReevesiteNi6Fe23+(OH)16(CO3) · 4H2O
StichtiteMg6Cr2(OH)16[CO3] · 4H2O
TakoviteNi6Al2(OH)16[CO3] · 4H2O
WoodalliteMg6Cr2(OH)16Cl2 · 4H2O
Group Members:
UM1965-08-OH:FeMgNi Fe-Mg-Ni-O-H
5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl · 6H2O
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2O
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 4-5H2O
5.DA.05UM1986-10-CO:ClHMgMnZnMg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05UM1987-01-CO:HMgSMg4(CO3)2(OH)4 · 6H2O ?
5.DA.10ArtiniteMg2CO3(OH)2 · 3H2O
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.10ChlorartiniteMg2CO3Cl(OH) · 2.5H2O
5.DA.15OtwayiteNi2CO3(OH)2 · H2O
5.DA.15ZaratiteNi3CO3(OH)4 · 4H2O
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2O
5.DA.25CallaghaniteCu2Mg2CO3(OH)6 · 2H2O
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14 · 7H2O
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2O
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2O
5.DA.40CaresiteFe42+Al2(OH)12CO3 · 3H2O
5.DA.40QuintiniteMg4Al2(OH)12CO3 · 3H2O
5.DA.40CharmariteMn4Al2(OH)12CO3 · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2O
5.DA.45BrugnatelliteMg6Fe3+CO3(OH)13 · 4H2O
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 2H2O
5.DA.45Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2O
5.DA.45Pyroaurite-2HMg6Fe23+(OH)16(CO3) · 4H2O
5.DA.45ZaccagnaiteZn4Al2(OH)12(CO3) · 3H2O
5.DA.50ComblainiteNi4Co23+CO3(OH)12 · 3H2O
5.DA.50DesautelsiteMg6Mn23+CO3(OH)16 · 4H2O
5.DA.50PyroauriteMg6Fe23+CO3(OH)16 · 4H2O
5.DA.50ReevesiteNi6Fe23+CO3(OH)16 · 4H2O
5.DA.50StichtiteMg6Cr2CO3(OH)16 · 4H2O
5.DA.50TakoviteNi6Al2CO3(OH)16 · 4H2O
5.DA.50UM1998-10-CO:CoHNiCo6Fe2(CO3)(OH)16 · 4H2O ?
5.DA.55CoalingiteMg10Fe23+CO3(OH)24 · 2H2O
11.7.1ScarbroiteAl5(CO3)(OH)13 · 5H2O
11.7.2HydroscarbroiteAl14(CO3)3(OH)36 · nH2O
11.7.5Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2O
11.7.6IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
11.7.7AlumohydrocalciteCaAl2(CO3)2(OH)4 · 3H2O
11.7.8Para-alumohydrocalciteCaAl2(CO3)2(OH)4 · 6H2O
11.7.10WermlanditeMg8Al2(OH)18(SO4)2 · 12H2O
11.7.11MontroyaliteSr4Al8(CO3)3(OH)26 · 10H2O
11.7.12DresseriteBa2Al4(CO3)4(OH)8 · 3H2O
11.7.13HydrodresseriteBaAl2(CO3)2(OH)4 · 3H2O
11.7.14StrontiodresseriteSrAl2(CO3)2(OH)4 · H2O

Other Names for Hydrotalcite

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.

References for Hydrotalcite

Reference List:
Foshag (1920), U.S. National Museum, Proceedings: 58: 147.

Frondel, C. (1941), American Mineralogist: 26: 295.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 653-655.

Processi verbali della Società Toscana di scienze naturali in Pisa: 24: 92-105.

American Mineralogist (1967): 52: 1036-1047.

Proceedings of the U.S. National Museum: 58: 147-153.

Bulletin de la Société française de Minéralogie: 67: 409-419.

Journal of Physical Chemistry: 100: 8527-8534.

Neues Jahrbuch für Mineralogie, Monatshefte: 544-551.

Mineralogical Magazine: 39: 377-389.

Mills, S.J., Christy, A.G., Genin, J.-M.R., Kameda, T., Colombo, F. (2012): Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289-1336.

Mills, S.J., Christy, A.G., Schmitt, R.T. (2016): The creation of neotypes for hydrotalcite. Mineralogical Magazine: 80 (in press).

Internet Links for Hydrotalcite URL:
Please feel free to link to this page.
The following Hydrotalcite specimens are currently listed for sale on

Localities for Hydrotalcite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Tasmania
    • West Coast municipality
      • Trial Harbour district
Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
  • Western Australia
    • Wiluna Shire
      • Mount Keith
Grguric, B.A. (2003) Minerals of the MKD5 nickel deposit, Mount Keith, Western Australia. Australian Journal of Mineralogy, Vol. 9, No. 2 , pg. 55-71.
  • Styria
    • Bad Gleichenberg
      • Wilhelmsdorf
Alker, A., Golob, P., Postl, W. & Waltinger, H. (1981): Hydrotalkit, Nordstrandit und Motukoreait vom Stradner Kogel, südlich Gleichenberg, Steiermark. Mitt.-Bl. Abt. Mineral. Landesmuseum Joanneum 49, 1-13.; R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Bad Radkersburg
      • Klöch
"Aus der Tiefe der Vulkane", Fritz-Jandl-Postl (2011)
    • Feldbach
      • Mühldorf
peter neschen collection
    • Leoben
      • Kraubath an der Mur
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
  • São Paulo
    • Cajati
[Hydrotalcite-2H] MinRec 15:261-270
  • Yambol Oblast
    • Tundzha Obshtina
Marcus Vau Collection
  • Ontario
    • Hastings Co.
      • Elzevir Township
Ann P.Sabina (1987), Rocks and Minerals for the Collector, Hull-Maniwaki, Quebec; Ottawa-Peterborough, Ontario. GSC Misc. Report 41, p77
  • Québec
    • Chaudière-Appalaches
      • Les Appalaches RCM
        • Saint-Joseph-de-Coleraine
Royal Ontario Museum specimen M48712; Horváth Coll. XRD ID.
Gaudard (1993)
        • Thetford Mines
          • Black Lake
Canadian Museum of Nature collection
Sabina (1967)
    • Estrie
      • Les Sources RCM
        • Asbestos
HORVÁTH, L., PFENNINGER-HORVÁTH, E. and SPERTINI, F. (2013) The Jeffrey mine, Asbestos, Québec, Canada: A mineralogical review. Mineralogical Record, 44, 375-417.
    • Outaouais
      • Les Collines-de-l'Outaouais RCM
        • Chelsea
Geological Survey of Canada Miscellaneous Report 41
        • Wakefield
Sabina, A.P. (1987) Rocks & Minerals for the collector; Hull-Maniwaki, Quebec, Ottawa-Peterborough, Ontario. GSC Misc. Report 41, 34-35 p.
  • Jilin Province (Manchuria; Dongbei Region)
    • Tonghua Prefecture
      • Ji'an Co.
Zhaobin Su and Shaoying Jiang (1984): Journal of Mineralogy and Petrology 5(3), 102-108
  • Shaanxi Province
    • Hanzhong Prefecture
      • Ningqiang Co.
Zhaobin Su and Shaoying Jiang (1984): Journal of Mineralogy and Petrology 5(3), 102-108
  • Sichuan Province
    • Ya'an Prefecture
      • Shimian Co.
Shaoying Jiang, Guangrong Zhang, Hui'e Liang, and Weiqi Huang (1984): Acta Mineralogica Sinica 4(4), 296-302
Zhaobin Su and Shaoying Jiang (1984): Journal of Mineralogy and Petrology 5(3), 102-108
Zhaobin Su and Shaoying Jiang (1984): Journal of Mineralogy and Petrology 5(3), 102-108
Czech Republic
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Žďár nad Sázavou
        • Věžná
Canadin Mineralogist, Vol 17, 1979, pp. 583-588.; Cerny, P., Hawthorne, F. C., Laflamme, J. H. G., & Hinthorne, J. (1979). Stibiobetafite, a new member of the pyrochlore group from Vezna, Czechoslovakia. Canadian Mineralogist, 17, 583-588.
Petr Pauliš (2001): Nejzajímavější mineralogická naleziště Moravy a Slezska. Kuttna, Kutná Hora.
  • Occitanie
    • Pyrénées-Orientales
      • Prats-de-Mollo-la Preste (Prats de Molló-la Presta)
Goujou J-C., Guitard G., Berbain C. (2000), Le massif de Costabonne, 2464 m (Pyrénées-Orientales), Le Règne Minéral, n°32, pp: 5-12
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German); WALENTA, K. (1995): Neue Mineralfunde von der Grube Clara. 6. Folge, 1. Teil. - Lapis 20 (5), 33-38.
  • Bavaria
    • Franconia
      • Maroldsweisach
Wittern: "Mineralfundorte in Deutschland", 2001
  • Lower Saxony
    • Harz
      • Clausthal-Zellerfeld
        • Bockswies veins
          • Oberschulenberg
No reference listed
  • Rhineland-Palatinate
    • Eifel
      • Daun
        • Üdersdorf
Hentschel, G., Die Minerale der Üdersdorfer Lava, Lapis, Weise Verlag, München, 11/1989
      • Gerolstein
        • Birresborn
Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag, München (2. Auflage), 1987
      • Hillesheim
        • Zilsdorf
Hentschel, G., Die Mineralien des Arensberges bei Zilsdorf, Eifel, Der Aufschluß 29, 219-227, 1978
      • Niederzissen
        • Brenk
Blass, G., Els, F., Über den Erstfund von Hydrotalkit-kristallen vom Schellkopf bei Brenk in der Vulkaneifel, MW 4/1993
  • Saxony
    • Erzgebirge
      • Niederschlag-Bärenstein District
        • Bärenstein
Wittern: "Mineralfundorte in Deutschland", 2001;;topicseen#new (Thomas Witzke comment)
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Lavrion (Laurion; Laurium)
No reference listed
        • Sounion area
          • Sounion Mines
Lapis, 24, 7/8 (1999)
  • Fejér Co.
    • Szár Hill
      • Kőszárhegy
Szakáll: Minerals of Szár Hill, 2004
  • Pest Co.
    • Szentendre
      • Dunabogdány
Harangi, S. et al. (2009): Dunabogdány: Zeolites, laccolith, contact zone, Field Trip 2, 9th September 2009. MinPet2009 field trip booklet, 17 pp.
  • Negev
Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.
  • Lombardy
    • Sondrio Province
      • Valtellina
        • Malenco Valley
          • Lanterna Valley
            • Lanzada
              • Campo Moro Valley
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.
  • Piedmont
    • Torino Province
      • Canavese District
        • Léssolo
          • Cálea
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Trento Province
      • Centa San Nicolò
        • Vigolana Mount
Guida ai minerali. F.Fabbri Ed., Milano 1973.
      • Lagarina Valley
        • Ala
          • Pilcante
Giorgio Bortolozzi, visual identification; Bortolozzi, G., Boscardin, M., Rocchetti, I., Bersani, D. (2013): Cafetite e kassite della cava di Pilcante in Val d'Adige (Ala, Trento). Micro, 11, 1, 39-48.
          • San Valentino Valley
Giorgio Bortolozzi (visual identification)
"Giorgio Bortolozzi (visual identification)"
        • Terragnolo Valley
          • Terragnolo
"Giorgio Bortolozzi (visual identification)"
            • Borcola Pass
Zordan A. (2014): Provincia di Vicenza. In: Zorzi F., Boscardin M. (eds.), Minerali del Veneto. Alla scoperta sei tesori della nostra regione. Museo di Storia Naturale e Archeologia di Montebelluna - Treviso, Cierre Edizioni, Sommacampagna, 173-246.
"Giorgio Bortolozzi (visual identification)"
  • Veneto
    • Vicenza Province
      • Arsiero
        • Riofreddo valley
          • Contrada Busati-Pasquali
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
      • Astico Valley
        • Cogollo del Cengio
"Giorgio Bortolozzi (visual identification)"
        • Valdastico
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
      • Posina
        • Borcola Pass
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
        • Pasubio Massif
          • Punta della Lucche
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
          • Sogli Bianchi
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
      • Tonezza del Cimone
"Giorgio Bortolozzi (visual identification)"
      • Tretto di Schio
        • Val Munari
          • Contrade Maglio-Pornaro
- Boscardin M., Da Meda E., Zordan A., 1988. I minerali di un nuovo giacimento di contatto presso Schio (VI) - Rivista Mineralogica Italiana, Milano, fasc. 2, pp.73-78
  • Honshu Island
    • Chubu Region
      • Aichi prefecture
        • Shinshiro city
Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
    • Kinki Region
      • Kyoto Prefecture
        • Miyazu City
Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
  • Shikoku Island
    • Kochi Prefecture
      • Kochi City
Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
  • Amman
Pitty, A. F., & Alexander, W. R. (2010). A natural analogue study of cement buffered, hyperalkaline groundwaters and their interaction with a repository host rock IV: an examination of the Khushaym Matruk (central Jordan) and Maqarin (northern Jordan) sites. NDA-RWMD Technical Report, NDA, Moors Row, UK.
  • Irbid; Khoury, H. N., Salameh, E., & Abdul-Jaber, Q. (1985). Characteristics of an unusual highly alkaline water from the Maqarin area, northern Jordan. Journal of Hydrology, 81(1), 79-91.
  • Buskerud
    • Modum
Hochstetter (1842); Manasse (1915); Frondel (1941, table 1); Neumann (1985, p. 102); Raade (1996, pp. 45-46).
Frondel, C.(1941): Constitution and polymorphism of the pyroaurite and sjögrenite groups. American Mineralogist. 26, 295-315.
Wilke, H.-J. (1976): Mineral-Fundstellen Band 4: Skandinavien. Chr. Weise Verlag, München, 370 pp.
  • Hordaland
    • Bergen
      • Arna
[Hydrotalcite-2H] Neumann, H. (1985): Norges Mineraler. Norges geologiske Undersøkelse Skrifter 68 p. 103
      • Fana
[Hydrotalcite-2H] Collection of Naturhistorisk Museum, Bergen, Norway; Selbekk R.S. (2010): Norges mineraler. En revidert utgave av Norges mineraler (Neumann 1985). Tapir-NGU-NHM. 552p (p.215)
      • Ytrebygda
[Hydrotalcite-2H] Knut Edvard Larsen collection MM # 2264
  • Telemark
    • Kragerø
      • Sannidal
        • Lona
Neumann, H. (1985): Norges Mineraler. Norges Geologiske Undersøkelse Skrifter 68. p. 98 and 102.
  • Małopolskie
    • Kraków District
      • Krzeszowice Community
        • Dębnik-Dubie area
Muszyński M., Wyszomirski P. 1998: Przeobrażenia kontaktowe węglanowych skał dewonu w okolicach Dubia koło Krakowa. Geologia 24, 3, 200-217
  • Upper Silesia (Śląskie)
    • Zawiercie District
Koszowska E., Salata D. 2001: Minerals of the hydrotalcite group in metasomatically altered carbonate rocks from Zawiercie, S Poland. Mineralogia Polonica, vol. 32, no 1, 69-84
  • Mehedinti Co.
    • Almas Mts
Minerals of Carpathians
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Zheleznogorsk
Mazurov, M.P., Grishina, S.N., Istomin, V.E., and Titov, A.T. (2007): Geology of Ore Deposits 49(4), 271-284.; Mazurov et al (2007) Geology of Ore Deposits, 49, 271–284.
American Mineralogist 49:1501
      • Aldan Shield
        • Aldan
Schreyer et al (1998), Contributions to Mineralogy and Petrology: 133: 382-388.
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
[Hydrotalcite-2H] Subbotin, R. P. L. V. V., & Pakhomovsky, Y. A. (1998). A new type of scandium mineralization in phoscorites and carbonatites of the Kovdor massif, Russia. Canadian Mineralogist 36:971-980.
[Hydrotalcite-2H]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Asbest
Dana 7:I:654.; Antonov A.A. [Антонов А.А.] (2003): Mineralogy of rodingites of the Bazhenovsk ultrabasic massif [Минералогия родингитов Баженовского гипербазитого массива]. Nauka, Sankt-Peterburg, 129 pp. (in Russian).
    • Southern Urals
      • Chelyabinsk Oblast'
        • Ufaley District (Ufalei District)
Talovina, I.V., Lazarenkov, V.G., and Vorontsova, N.I. (2003): Lithology and Mineral Resources 38(5), 403-415.
        • Zlatoust
          • Kusinsk Fe-Ti-V-deposit
[Hydrotalcite-2H] Joe Cilen
South Africa
  • Limpopo Province
    • Phalaborwa
      • Loolekop
Minerals of South Africa; Gliddon, J. (1996) Minerals of the Palabora open pit. British Micromount Society 43:2-7
  • Castile-La Mancha
    • Ciudad Real
      • Campo de Calatrava volcanoes
        • Almagro
Calvo, M., Viñals, J., Sanz, A. and Martí, J. (2013). Zeolites and asociated minerals in the vacuoles of some of the Campo de calatrava volcanoes - Ciudad Real, Spain. Mineral Up,3, 54-69
  • Värmland
    • Filipstad
Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183. ; K:Gatedal
No reference listed
  • Västmanland
    • Ljusnarsberg
      • Kopparberg
        • Kaveltorp Mines
No reference listed
  • Viloyati Mukhtori Gorno-Badakhshan (Viloyati Badakhshoni Kuni)
    • Pamir Mts
      • Pyandzh River Valley
        • Kukh-i-Lal (Kukhilal; Kuhi-lal)
Pavel M. Kartashov data
  • Mediterranean Region
    • Burdur Province
      • Taurus Mts
        • Doganbaba
American Mineralogist, Volume 61, pages 825-830, 1976
  • England
    • Somerset
      • East Harptree
BMS Database
  • California
    • Fresno Co.
      • Diablo Range
        • New Idria District
          • Wright Mountain
Mumpton, F.A. Jaffe, H.W., and Thompson, C.S. (1965) Coalingite, a new mineral from the New Idria serpentinite, Fresno and San Benito counties, California. American Mineralogist: 50: 1893-1913; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 198.
    • Riverside Co.
      • Crestmore
    • San Benito Co.
      • Diablo Range
American Mineralogist 1965: 50: 1893-1913.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 199.
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
Dunn, P.J.: Min.Rec.:10:160-165 (1979); Dunn(1995):Pt4:621.
      • Vernon Township
No reference listed
  • New York
Ford, 1932. Dana's Textbook of Mineralogy, 4th ed.
[Hydrotalcite-2H] John H. Betts (2009) "The minerals of New York City", Rocks & Minerals, 84, 204-240.
    • Orange Co.
      • Town of Warwick
[Hydrotalcite-2H] Frondel (1941)
    • Putnam Co.
      • Town of Southeast
        • Brewster
(Manchester, 1931) (Trainer, 1938) (Whitlock, 1903).
Ford, 1932. Dana's Textbook of Mineralogy, 4th ed.
  • Pennsylvania
    • Lancaster Co.
      • State Line Chromite District
        • Fulton Township
[UM1965-08-OH:FeMgNi] Lapham, D.M. (1965): A new nickeliferous magnesium hydroxide from Lancaster County, Pennsylvania. American Mineralogist: 50: 1708-1716
  • Vermont
    • Orleans & Lamoille Cos.
      • Lowell & Eden
Levitan, Denise et al. (2009): Mineralogy of mine waste at the Vermont Asbestos Group mine, Belvidere Mountain, Vermont. American Mineralogist 94(7):1063-1066.
  • Washington
    • Stevens Co.
      • Chewelah District
        • Chewelah
Minerals of Washington, Bart Cannon, 1975
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