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Takovite

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Aghbar Mine (Arhbar Mine), Aghbar, Bou Azer District (Bou Azzer District), Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
© Georges Favreau 2011

Show Takovite Photos (12)



Formula:
Ni
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
System:TrigonalColour:Yellowish-green, ...
Hardness:2
Member of:Hydrotalcite Group
Name:Named after its discovery locality, Takovo, Serbia.


Hydrotalcite Group.

Classification of Takovite

IMA status:Approved
Strunz 8th edition ID:5/E.03-50
Nickel-Strunz 10th (pending) edition ID:5.DA.50

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Dana 8th edition ID:16b.6.3.2

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1
Hey's CIM Ref.:7.22.5

7 : Oxides and Hydroxides
22 : Oxides of Ni
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Type Occurrence of Takovite

Type Locality:Takovo, Serbia
Year of Discovery:1957

Physical Properties of Takovite

Diaphaneity (Transparency):Translucent
Colour:Yellowish-green, bluish-green
Hardness (Mohs):2

Crystallography of Takovite

Crystal System:Trigonal
Cell Parameters:a = 3.02Å, c = 22.59Å
Ratio:a:c = 1 : 7.48
Unit Cell Volume:V 178.43 ų (Calculated from Unit Cell)

Optical Data of Takovite

Type:Uniaxial (-)
RI values: nω = 1.601 - 1.602 nε = 1.600
Maximum Birefringence:δ = 0.001 - 0.002

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Takovite

Formula:
Ni
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Essential elements:Al, C, H, Ni, O
All elements listed in formula:Al, C, H, Ni, O

Relationship of Takovite to other Species

Member of:Hydrotalcite Group
Other Members of Group:

- +
Desautelsite
Mg
 
6
Mn
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Hydrotalcite
Mg
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Hydrowoodwardite
(Cu,Al)
 
9
(SO
 
4
)
 
2
(OH)
 
18
 · nH
 
2
O
Iowaite
Mg
 
6
Fe
3+
2
(OH)
 
16
Cl
 
2
 · 4H
 
2
O
Pyroaurite
Mg
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Stichtite
Mg
 
6
Cr
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Wermlandite
Mg
 
7
(Ca,Mg)(Al,Fe)
 
2
(SO
 
4
)
 
2
(OH)
 
18
 · 12H
 
2
O
Woodwardite
Cu
 
4
Al
 
2
(SO
 
4
)(OH)
 
12
 · 2-4H
 
2
O
Zincowoodwardite
Zn
 
1-x
Al
 
x
(SO
 
4
)
 
x/2
(OH)
 
2
 · nH
 
2
O (x=0.32-0.50)
Related Minerals - Nickel-Strunz Grouping):

- +
5.DA.05Dypingite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
 · 5H
 
2
O
5.DA.05Giorgiosite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
 · 5-6H
 
2
O
5.DA.05Hydromagnesite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
 · 4H
 
2
O
5.DA.05Widgiemoolthalite
Ni
 
5
(CO
 
3
)
 
4
(OH)
 
2
 · 5H
 
2
O
5.DA.05UM1986-10-CO:ClHMgMnZn
Mg
 
5
(Zn,Mn)
 
3
(CO
 
3
)
 
2
(OH,Cl)
 
12
 · H
 
2
O
5.DA.05UM1987-01-CO:HMgS
Mg
 
4
(CO
 
3
)
 
2
(OH)
 
2
 · 6H
 
2
O ?
5.DA.10Artinite
Mg
 
2
(CO
 
3
)(OH)
 
2
 · 3H
 
2
O
5.DA.10Indigirite
Mg
 
2
Al
 
2
(CO
 
3
)
 
4
(OH)
 
2
 · 15H
 
2
O
5.DA.10Chlorartinite
Mg
 
2
(CO
 
3
)(OH)Cl · 2H
 
2
O
5.DA.15Otwayite
Ni
 
2
(CO
 
3
)(OH)
 
2
 · H
 
2
O
5.DA.15Zaratite
Ni
 
3
(CO
 
3
)(OH)
 
4
 · 4H
 
2
O
5.DA.20Kambaldaite
NaNi
 
4
(CO
 
3
)
 
3
(OH)
 
3
 · 3H
 
2
O
5.DA.25Callaghanite
Cu
 
2
Mg
 
2
(CO
 
3
)(OH)
 
6
 · 2H
 
2
O
5.DA.30Claraite
(Cu,Zn)
 
3
(CO
 
3
)(OH)
 
4
 · 4H
 
2
O
5.DA.35Hydroscarbroite
Al
 
14
(CO
 
3
)
 
3
(OH)
 
36
 · nH
 
2
O
5.DA.35Scarbroite
Al
 
5
(CO
 
3
)(OH)
 
13
 · 5H
 
2
O
5.DA.40Caresite
Fe
2+
4
Al
 
2
(CO
 
3
)(OH)
 
12
 · 3H
 
2
O
5.DA.40Quintinite
Mg
 
4
Al
 
2
(CO
 
3
)(OH)
 
12
 · H
 
2
O
5.DA.40Charmarite
Mn
2+
4
Al
 
2
(CO
 
3
)(OH)
 
12
 · 3H
 
2
O
5.DA.45Barbertonite
Mg
 
6
(Cr,Al)
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.45Brugnatellite
Mg
 
6
Fe
3+
 
(CO
 
3
)(OH)
 
13
 · 4H
 
2
O
5.DA.45Chlormagaluminite
(Mg,Fe
2+
 
)
 
4
Al
 
2
(Cl
 
2
,CO
 
3
)(OH)
 
12
 · 2H
 
2
O
5.DA.45Manasseite
Mg
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.45Sjögrenite
Mg
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.45Zaccagnaite
Zn
 
4
Al
 
2
(CO
 
3
)(OH)
 
12
 · 3H
 
2
O
5.DA.50Comblainite
Ni
 
6
Co
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Desautelsite
Mg
 
6
Mn
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Hydrotalcite
Mg
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Pyroaurite
Mg
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Reevesite
Ni
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Stichtite
Mg
 
6
Cr
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50UM1998-10-CO:CoHNi
Co
 
6
Fe
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O ?
5.DA.55Coalingite
Mg
 
10
Fe
3+
2
(CO
 
3
)(OH)
 
24
 · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
7.22.1Bunsenite
NiO
7.22.3Theophrastite
Ni(OH)
 
2
7.22.4Jamborite
(Ni
2+
 
,Ni
3+
 
,Co,Fe)(OH)
 
2
(OH,S,H
 
2
O)
7.22.6Trevorite
Ni
2+
 
Fe
3+
2
O
 
4
7.22.7Nichromite
(Ni,Co,Fe)(Cr,Fe,Al)
 
2
O
 
4

Other Names for Takovite

Synonyms:
Eardleyite
Other Languages:
German:Eardleyit
Eardlyit
Takovit
Spanish:Eardleyita
Eardlyita
Takovita

Other Information

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

References for Takovite

Reference List:

- +
Maksimovic Z. (1957), Zap. Vses. Mineral. Obshchestva, 99, 595.

American Mineralogist (1972): 57: 1559.

American Mineralogist (1977): 62: 458-464.

Zapisnici srp. Geol. Društva za 1955 god: 219-224.

Internet Links for Takovite

Search Engines:
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    • External Links:
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  • Look for Takovite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Takovite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Find Takovite on www.crystalclassics.co.uk
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    • Localities for Takovite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Australia
     
    • Western Australia
      • Goldfields-Esperance region
        • Kalgoorlie-Boulder City
          • Goongarrie
    		Mineralogical Magazine 1977 41 : 37-41; Min Mag (1979) 43, 97-98
        • Leonora Shire
          • Leinster
            • Agnew
    		E. H. Nickel, E.H. et al. (1977) Eardleyite as a product of the supergene alteration of nickel sulfides in Western Australia. American Mineralogist; June 1977; v. 62; no. 5-6; p. 449-457
      • Widgiemooltha
    		No reference listed
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • St Blasien
          • Urberg
    		Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German)
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Sounion area
            • Sounion Mines
    		G. Niedermayr and F. Brandstätter (2001) Neufund aus Laurion: Takovit von Sounion, Griechenland. Mineralienwelt 2/2001 (in German)
    • Sterea Hellas Department
      • Fthiótis Prefecture
        • Lokris
    		Acta Geol. Hung., 44(1), 81–93.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azer District (Bou Azzer District)
            • Aghbar
    		Georges Favreau collection
            • Agoudal
    		Georges Favreau collection
    Romania
     
    • Suceava Co.
      • Suceava district
    		http://minerals-of-the-carpathians.eu
    Russia
     
    • Central Region
      • Moscow Oblast' (Moscovskaya Oblast')
    		Pavel M. Kartashov analytical data
    Serbia
     
    Zap.Srpskog.Geol. Drustva zo 1955 god. ; AM 62 (1977), 458
    USA
     
    • Utah
      • Utah Co.
        • Oquirrh Mts
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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