Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Hydrotalcite-2H

A structural variant of Hydrotalcite
This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About Hydrotalcite-2HHide

Formula:
Mg6Al2(CO3)(OH)16 · 4H2O
Colour:
White, grey or pale blue, brownish white.
Lustre:
Waxy, Pearly
Hardness:
2
Specific Gravity:
2 - 2.1
Crystal System:
Hexagonal
Name:
Renamed as a polytype of hydrotalcite in 2012. The original name, manasseite, was named by Clifford Frondel in 1940 in honor of Ernesto Manasse [1875-1922], Professor of Mineralogy, University of Florence [Firenze], Italy.
A polytype of Hydrotalcite

Originally named manasseite, which was later recognised as a polytype of hydrotalcite and accordingly discredited (Mills et al., 2012).


Unique IdentifiersHide

Mindat ID:
2560
Long-form identifier:
mindat:1:1:2560:3
GUID
(UUID V4):
f391d146-d571-446f-abbd-0022dbf493ce

Classification of Hydrotalcite-2HHide

5.DA.45

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
16b.6.1.1

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1
11.7.5

11 : Carbonates
7 : Carbonates of Al

Physical Properties of Hydrotalcite-2HHide

Waxy, Pearly
Transparency:
Transparent
Colour:
White, grey or pale blue, brownish white.
Hardness:
Cleavage:
Perfect
{0001}
Density:
2 - 2.1 g/cm3 (Measured)    2 g/cm3 (Calculated)

Optical Data of Hydrotalcite-2HHide

Type:
Uniaxial (-)
RI values:
nω = 1.524 nε = 1.510
Max Birefringence:
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemistry of Hydrotalcite-2HHide

Mindat Formula:
Mg6Al2(CO3)(OH)16 · 4H2O

Crystallography of Hydrotalcite-2HHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 3.1 Å, c = 15.32 Å
Ratio:
a:c = 1 : 4.942
Unit Cell V:
127.50 ų (Calculated from Unit Cell)
Morphology:
Massive. Foliated or contorted structure. Lamellar on {0001}.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.67 Å(100)
2.60 Å(50)
2.34 Å(40)
2.17 Å(40)
2.00 Å(40)
1.84 Å(60)
1.52 Å(30)

First Recorded Occurrence of Hydrotalcite-2HHide

Synonyms of Hydrotalcite-2HHide

Other Language Names for Hydrotalcite-2HHide

Anglo-Saxon:Hydrotalcite-2H
German:Manasseit
Spanish:Manasseita

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Hydrotalcite-2H associated with HydrotalciteMg6Al2(CO3)(OH)16 · 4H2O
1 photo of Hydrotalcite-2H associated with MagnesiteMgCO3
1 photo of Hydrotalcite-2H associated with QuintiniteMg4Al2(OH)12(CO3) · 3H2O
1 photo of Hydrotalcite-2H associated with LizarditeMg3(Si2O5)(OH)4
1 photo of Hydrotalcite-2H associated with GorceixiteBaAl3(PO4)(PO3OH)(OH)6

Related Minerals - Strunz-mindat GroupingHide

5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl · 6H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.AmoraiteCa12Al6(OH)36(CO3)2(SO3) · 15H2O Tric. 1 : P1
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2OMon.
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2OMon. 2/m : P21/b
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2OMon. 2/m : P21/b
5.DA.05UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05UM1987-01-CO:HMgSMg4(CO3)2(OH)4 · 6H2O ?Mon.
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2OMon. 2/m : B2/m
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2OTrig. 3m : R3c
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2OOrth.
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O ?Iso.
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2OHex. 6 : P63
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2OMon. 2/m : B2/b
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14 · 7H2OTric. 1 : P1
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2OTric.
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2OTric.
5.DA.40CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig. 3 2 : P31 1 2
5.DA.40QuintiniteMg4Al2(OH)12(CO3) · 3H2OHex. 6 2 2 : P63 2 2
5.DA.40CharmariteMn2+4Al2(OH)12[CO3] · 3H2OHex.
5.DA.40KarchevskyiteMg18Al9(OH)54Sr2(CO3)9(H2O)6 (H3O)5Trig.
5.DA.40UM1987-05-OH:AlCMgMg4Al2(OH)12(CO3,SO4) · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.45Pyroaurite-2HMg6Fe3+2(OH)16(CO3) · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2OHex.
5.DA.45LiudongshengiteZn4Cr2(OH)12(CO3) · 3H2OTrig. 3m (3 2/m) : R3m
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
5.DA.50DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)
5.DA.50HydrotalciteMg6Al2(CO3)(OH)16 · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50KaznakhtiteNi6Co3+2(CO3)(OH)16 · 4H2OTrig. 3 : R3
5.DA.55CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig. 3m (3 2/m) : R3m
5.DA.55Akopovaite Al4Li2(OH)12(CO3)(H2O)3Mon. 2/m : B2/m
5.DA.60ŠlikiteZn2Mg(CO3)2(OH)2 · 4H2OTric. 1 : P1
5.DA.65MarkliteCu5(CO3)2(OH)6 · 6H2OMon. 2/m : P21/b

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.

Internet Links for Hydrotalcite-2HHide

References for Hydrotalcite-2HHide

Localities for Hydrotalcite-2HHide

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 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.
Brazil
 
  • São Paulo
    • Cajati
Menezes et al. (1984)
Oliveira et al. (2020)
Bulgaria
 
  • Yambol Province
    • Tundzha Municipality
      • Krumovo
Marcus Vau Collection
Czech Republic
 
  • Ústí nad Labem Region
    • Litoměřice District
      • Třebenice
Houzar et al. (2008)
France
 
  • Occitanie
    • Pyrénées-Orientales
      • Céret
        • Prats-de-Mollo-la-Preste
Dubru. M (1986)
Hungary
 
  • Pest County
    • Szentendre District
      • Dunabogdány
Harangi (2009)
Norway
 
  • Vestland
    • Bergen
      • Arna
Henrich Neumann (1985)
      • Fana
Collection of Naturhistorisk Museum +1 other reference
      • Ytrebygda
Knut Edvard Larsen collection MM # 2264
  • Viken
    • Modum
Mike Scott S106109 from Cureton 1999 ID ...
Mills et al (2012) +1 other reference
Poland
 
  • Silesian Voivodeship
    • Zawiercie County
      • Gmina Łazy
        • Rokitno Szlacheckie
Koszowska E.
Russia
 
  • Chelyabinsk Oblast
    • Zlatoust
      • Kusinsk Fe-Ti-V-deposit
Joe Cilen
  • Murmansk Oblast
Subbotin et al. (1998)
maurice.strahlen.org (2003)
[World of Stones 95:5-6 +2 other references
  • Sverdlovsk Oblast
    • Asbest
Antonov A.A. [Антонов А.А.] (2003)
Sweden
 
  • Värmland County
    • Filipstad
Kjell Gatedal collection and ...
USA
 
  • New York
John H. Betts (2009)
    • Orange County
      • Town of Warwick
Frondel (1941)
 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: March 28, 2024 07:59:49 Page updated: January 25, 2024 14:24:28
Go to top of page