Takovite
A valid IMA mineral species - grandfathered
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About Takovite
Takovo, Serbia
Formula:
Ni6Al2(OH)16[CO3] · 4H2O
Colour:
Yellowish-green, bluish-green
Hardness:
2
Specific Gravity:
2.80
Crystal System:
Trigonal
Member of:
Name:
Named after its discovery locality, Takovo, Serbia.
Unique Identifiers
Mindat ID:
3874
Long-form identifier:
mindat:1:1:3874:0
IMA Classification of Takovite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Ni2+6Al2(OH)16(CO3)·4H2O
First published:
1957
Classification of Takovite
5.DA.50
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
16b.6.3.2
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZq
7.22.5
7 : Oxides and Hydroxides
22 : Oxides of Ni
7 : Oxides and Hydroxides
22 : Oxides of Ni
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Tkv | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Tkv | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of Takovite
Transparency:
Translucent
Colour:
Yellowish-green, bluish-green
Hardness:
2 on Mohs scale
Density:
2.80 g/cm3 (Measured) 2.95 g/cm3 (Calculated)
Optical Data of Takovite
Type:
Uniaxial (-)
RI values:
nω = 1.602 - 1.605 nε = 1.594 - 1.598
Max. Birefringence:
δ = 0.007 - 0.008
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Chemistry of Takovite
Mindat Formula:
Ni6Al2(OH)16[CO3] · 4H2O
Element Weights:
Crystallography of Takovite
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3m
Cell Parameters:
a = 3.0290(2) Å, c = 22.5995(15) Å
Ratio:
a:c = 1 : 7.461
Unit Cell V:
179.57 ų (Calculated from Unit Cell)
Morphology:
Microcrystalline, platy, to 1 µm; very rarely as very small six-sided platey crystals; commonly in veinlets and massive.
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019806 | Takovite | Mills S J, Whitfield P S, Kampf A R, Wilson S A, Dipple G M, Raudsepp M, Favreau G (2012) Contribution to the crystallography of hydrotalcites: the crystal structures of woodallite and takovite Journal of Geosciences 58 273-279 | 2012 | Agoudal mine, Bou Azzer district, Tazenakht, Morocco | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.566 Å | (100) |
| 3.767 Å | (90) |
| 2.552 Å | (90) |
| 1.917 Å | (90) |
| 2.264 Å | (80) |
| 1.510 Å | (80) |
| 1.481 Å | (80) |
Comments:
Takovo, Serbia. Data from the type description. Pattern is similar to that of comblainite.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 48 : Soil leaching zone minerals | <0.6 |
Type Occurrence of Takovite
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 136981.
Synonyms of Takovite
Other Language Names for Takovite
Relationship of Takovite to other Species
Member of:
Other Members of Hydrotalcite Group:
| Desautelsite | Mg6Mn3+2(OH)16[CO3] · 4H2O | Trig. 3m(32/m) |
| Droninoite | Ni6Fe3+2(OH)16Cl2 · 4H2O | Trig. 3m(32/m) : R3m |
| Hydrotalcite | Mg6Al2(CO3)(OH)16 · 4H2O | Trig. 3m(32/m) : R3m |
| Iowaite | Mg6Fe3+2(OH)16Cl2 · 4H2O | Trig. 3m(32/m) : R3m |
| Kaznakhtite | Ni6Co3+2(CO3)(OH)16 · 4H2O | Trig. 3 : R3 |
| Meixnerite | Mg6Al2(OH)16(OH)2 · 4H2O | Trig. 3m(32/m) : R3m |
| Pyroaurite | Mg6Fe3+2(OH)16[CO3] · 4H2O | Trig. 3m(32/m) : R3m |
| Reevesite | Ni6Fe3+2(OH)16(CO3) · 4H2O | Trig. 3m(32/m) : R3m |
| Stichtite | Mg6Cr3+2(OH)16[CO3] · 4H2O | Trig. 3m(32/m) : R3m |
| 'UM2002-02-COH:FeNi' | (Fe2+,Ni)6Fe3+2(CO3)(OH)16 · 4H2O | |
| Woodallite | Mg6Cr2(OH)16Cl2 · 4H2O | Trig. 3m(32/m) : R3m |
Common Associates
Associations Based on Photo Data:
| 5 photos of Takovite associated with Asbolane | (Ni,Co)2-xMn4+(O,OH)4 · nH2O |
| 3 photos of Takovite associated with Fluorite | CaF2 |
| 3 photos of Takovite associated with Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| 2 photos of Takovite associated with 'Nickel-bearing Calcite' | (Ca,Ni)CO3 |
| 1 photo of Takovite associated with Aragonite | CaCO3 |
| 1 photo of Takovite associated with Calcite | CaCO3 |
| 1 photo of Takovite associated with Smithsonite | ZnCO3 |
| 1 photo of Takovite associated with Kambaldaite | NaNi4(CO3)3(OH)3 · 3H2O |
| 1 photo of Takovite associated with Millerite | NiS |
Related Minerals - Strunz-mindat Grouping
| 5.DA. | Alexkhomyakovite | K6(Ca2Na)(CO3)5Cl · 6H2O |
| 5.DA. | Amoraite | Ca12Al6(OH)36(CO3)2(SO3) · 15H2O |
| 5.DA.05 | Dypingite | Mg5(CO3)4(OH)2 · 5H2O |
| 5.DA.05 | 'UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)' | Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O |
| 5.DA.05 | 'UM1987-01-CO:HMgS' | Mg4(CO3)2(OH)4 · 6H2O ? |
| 5.DA.05 | Giorgiosite | Mg5(CO3)4(OH)2 · 5-6H2O |
| 5.DA.05 | Hydromagnesite | Mg5(CO3)4(OH)2 · 4H2O |
| 5.DA.05 | Widgiemoolthalite | Ni5(CO3)4(OH)2 · 5H2O |
| 5.DA.10 | Artinite | Mg2(CO3)(OH)2 · 3H2O |
| 5.DA.10 | Chlorartinite | Mg2(CO3)(OH)Cl · 2H2O |
| 5.DA.10 | Indigirite | Mg2Al2(CO3)4(OH)2 · 15H2O |
| 5.DA.15 | Zaratite | Ni3(CO3)(OH)4 · 4H2O ? |
| 5.DA.15 | Otwayite | Ni2(CO3)(OH)2 · H2O |
| 5.DA.20 | Kambaldaite | NaNi4(CO3)3(OH)3 · 3H2O |
| 5.DA.25 | Callaghanite | Cu2Mg2(CO3)(OH)6 · 2H2O |
| 5.DA.30 | Claraite | (Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14 · 7H2O |
| 5.DA.35 | Hydroscarbroite | Al14(CO3)3(OH)36 · nH2O |
| 5.DA.35 | Scarbroite | Al5(CO3)(OH)13 · 5H2O |
| 5.DA.40 | Karchevskyite | Mg18Al9(OH)54Sr2(CO3)9(H2O)6(H3O)5 |
| 5.DA.40 | 'UM1987-05-OH:AlCMg' | Mg4Al2(OH)12(CO3,SO4) · 3H2O |
| 5.DA.40 | Quintinite | Mg4Al2(OH)12(CO3) · 3H2O |
| 5.DA.40 | Charmarite | Mn2+4Al2(OH)12[CO3] · 3H2O |
| 5.DA.40 | Caresite | Fe2+4Al2(OH)12[CO3] · 3H2O |
| 5.DA.45 | 'Hydrotalcite-2H' | Mg6Al2(CO3)(OH)16 · 4H2O |
| 5.DA.45 | 'Stichtite-2H' | Mg6(Cr,Al)2(CO3)(OH)16 · 4H2O |
| 5.DA.45 | Brugnatellite | Mg6Fe3+(CO3)(OH)13 · 4H2O |
| 5.DA.45 | Zaccagnaite | Zn4Al2(OH)12[CO3] · 3H2O |
| 5.DA.45 | 'Pyroaurite-2H' | Mg6Fe3+2(OH)16(CO3) · 4H2O |
| 5.DA.45 | Liudongshengite | Zn4Cr2(OH)12(CO3) · 3H2O |
| 5.DA.45 | Chlormagaluminite | Mg4Al2(OH)12Cl2 · 3H2O |
| 5.DA.50 | Pyroaurite | Mg6Fe3+2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Reevesite | Ni6Fe3+2(OH)16(CO3) · 4H2O |
| 5.DA.50 | Kaznakhtite | Ni6Co3+2(CO3)(OH)16 · 4H2O |
| 5.DA.50 | Comblainite | Ni4Co2(OH)12[CO3] · 3H2O |
| 5.DA.50 | Marioantofilliite | [Cu4Al2(OH)12](CO3) · 3H2O |
| 5.DA.50 | Hydrotalcite | Mg6Al2(CO3)(OH)16 · 4H2O |
| 5.DA.50 | Stichtite | Mg6Cr3+2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Desautelsite | Mg6Mn3+2(OH)16[CO3] · 4H2O |
| 5.DA.55 | Coalingite | Mg10Fe3+2(OH)24[CO3] · 2H2O |
| 5.DA.55 | Akopovaite | Al4Li2(OH)12(CO3)(H2O)3 |
| 5.DA.60 | Šlikite | Zn2Mg(CO3)2(OH)2 · 4H2O |
| 5.DA.65 | Marklite | Cu5(CO3)2(OH)6 · 6H2O |
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.
Internet Links for Takovite
mindat.org URL:
https://www.mindat.org/min-3874.html
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References for Takovite
Reference List:
Brown, G., Gastuche, M. C. (1967) Mixed magnesium-aluminium hydroxides. II. Structure and structural chemistry of synthetic hydroxycarbonates and related minerals and compounds. Clay Minerals, 7 (2) 193-201 doi:10.1180/claymin.1967.007.2.06
Taylor, H. F. W. (1973) Crystal structures of some double hydroxide minerals. Mineralogical Magazine, 39 (304). 377-389 doi:10.1180/minmag.1973.039.304.01
Nickel, Ernest H., Davis, Charles E. S., Bussell, Michael, Bridge, Peter J., Dunn, Jeffrey G., MacDonald, Robert D. (1977) Eardleyite as a product of the supergene alteration of nickel sulfides in Western Australia. American Mineralogist, 62 (5-6) 449-457
Bish, David L., Brindley, G. W. (1977) A reinvestigation of takovite, a nickel aluminum hydroxy-carbonate of the pyroaurite group. American Mineralogist, 62 (5-6) 458-464
Frost, Ray L., Weier, Matt L., Kloprogge, J. Theo (2003) Raman spectroscopy of some natural hydrotalcites with sulphate and carbonate in the interlayer. Journal of Raman Spectroscopy, 34 (10). 760-768 doi:10.1002/jrs.1050
Mills, S. J., Whitfield, P. S., Kampf, A. R., Wilson, S. A., Dipple, G. M., Raudsepp, M., Favreau, F. (2012) Contribution to the crystallography of hydrotalcites: the crystal structures of woodallite and takovite. Journal of GEOsciences, 57 (4) 273-279
Localities for Takovite
Showing 22 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Nickel et al. (1985) |
| Nickel et al. (1977) |
| Marston (1984) |
| Nickel et al. (1993) +1 other reference |
| Nickel et al. (1977) | |
| Nickel et al. (1977) +1 other reference |
| Sorrell (n.d.) | |
| Nickel et al. (1977) +2 other references |
France | |
| Coudray (1970) |
| Bish et al. (1977) |
Germany | |
| Walenta (1992) |
| Walenta (1991) +1 other reference |
Greece | |
| Niedermayr et al. (2001) |
| Pantó et al. (2001) +1 other reference |
Morocco | |
| Favreau (n.d.) |
| Favreau (n.d.) +2 other references | |
Romania | |
| minerals-of-the-carpathians.eu (2008) |
| Hîrtopanu (1997) +1 other reference |
Russia | |
| Pavel M. Kartashov (n.d.) +2 other references |
Serbia (TL) | |
| Zap.Srpskog.Geol. Drustva zo 1955 god. +2 other references |
Turkey | |
| Helvaci et al. (2013) |
USA | |
| Bullock (1981) |
Quick NavTopAbout TakoviteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Aghbar Mine, Aghbar, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco