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Takanelite

Formula:
(Mn,Ca)Mn
 
4
O
 
9
·H
 
2
O
System:HexagonalColour:Grey, black, gray-brown
Lustre:DullHardness:5
Name:Named after Katsutoshi Takane (1899-1945), Professor of Mineralogy, Tohoku University, Sendai, Japan.


Birnessite Group. Rancieite-Takanelite Series. The manganese analogue of Ranciéite.

Classification of Takanelite

IMA status:Approved 1970
Strunz 8th edition ID:4/D.12-20
Nickel-Strunz 10th (pending) edition ID:4.FL.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
L : Hydroxides with H2O +- (OH); sheets of edge-sharing octahedra
Dana 8th edition ID:7.10.1.2

7 : MULTIPLE OXIDES
10 : AB4X9
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Type Occurrence of Takanelite

Type Locality:Nomura mine, Ehime prefecture, Shikoku Island, Japan
Year of Discovery:1971

Physical Properties of Takanelite

Lustre:Dull
Colour:Grey, black, gray-brown
Streak:Dark brown
Hardness (Mohs):5

Crystallography of Takanelite

Crystal System:Hexagonal
Cell Parameters:a = 8.68Å, c = 9Å
Ratio:a:c = 1 : 1.037
Unit Cell Volume:V 587.24 ų (Calculated from Unit Cell)

Chemical Properties of Takanelite

Formula:
(Mn,Ca)Mn
 
4
O
 
9
·H
 
2
O
Essential elements:H, Mn, O
All elements listed in formula:Ca, H, Mn, O

Relationship of Takanelite to other Species

Series:Forms a series with Ranciéite (see here)
Related to:
  • Birnessite Group
    • Related Minerals - Nickel-Strunz Grouping):
    4.FL.05Woodallite
    Mg
     
    6
    		Cr
     
    2
    		(OH)
     
    16
    		Cl
     
    2
    		·4H
     
    2
    		O
    4.FL.05Iowaite
    Mg
     
    4
    		Fe(OH)
     
    8
    		OCl·4H
     
    2
    		O
    4.FL.05Jamborite
    (Ni
    2+
     
    		,Ni
    3+
     
    		,Co,Fe)(OH)
     
    2
    		(OH,S,H
     
    2
    		O)
    4.FL.05Meixnerite
    Mg
     
    6
    		Al
     
    2
    		(OH)
     
    18
    		·4H
     
    2
    		O
    4.FL.05Muskoxite
    Mg
     
    7
    		Fe
     
    4
    		O
     
    13
    		·10H
     
    2
    		O
    4.FL.05Fougèrite
    (Fe
    2+
     
    		,Mg)
     
    6
    		Fe
    3+
    2
    		(OH)
     
    18
    		 · 4H
     
    2
    		O
    4.FL.10Hydrocalumite
    Ca
     
    2
    		Al(OH)
     
    7
    		·2H
     
    2
    		O
    4.FL.15Kuzelite
    Ca
     
    4
    		Al
     
    2.4
    		(OH)
     
    12.8
    		(SO
     
    4
    		)·6H
     
    2
    		O
    4.FL.20Aurorite
    (Mn
    2+
     
    		,Ag,Ca)Mn
    4+
    3
    		O
     
    7
    		 · 3H
     
    2
    		O
    4.FL.20Chalcophanite
    (Zn,Fe,Mn)Mn
     
    3
    		O
     
    7
    		·3H
     
    2
    		O
    4.FL.20Ernienickelite
    NiMn
     
    3
    		O
     
    7
    		·3H
     
    2
    		O
    4.FL.20Jianshuiite
    (Mg,Mn)Mn
     
    3
    		O
     
    7
    		·3H
     
    2
    		O
    4.FL.25Woodruffite
    Zn(Mn
    4+
     
    		,Mn
    3+
     
    		)
     
    5
    		O
     
    10
    		·3½H
     
    2
    		O
    4.FL.30Asbolane
    (Ni,Co)
     
    2-x
    		Mn
    4+
     
    		(O,OH)
     
    4
    		 · nH
     
    2
    		O
    4.FL.35Buserite
    Na
     
    4
    		Mn
     
    14
    		O
     
    27
    		 ·21H
     
    2
    		O
    4.FL.40Ranciéite
    (Ca,Mn)Mn
     
    4
    		O
     
    9
    		·3H
     
    2
    		O
    4.FL.45Birnessite
    (Na,Ca)
     
    0.5
    		(Mn
    4+
     
    		,Mn
    3+
     
    		)
     
    2
    		O
     
    4
    		 · 1.5H
     
    2
    		O
    4.FL.55Cianciulliite
    Mn(Mg,Mn)
     
    2
    		Zn
     
    2
    		(OH)
     
    10
    		·2-4H
     
    2
    		O
    4.FL.60Jensenite
    Cu
     
    3
    		[TeO
     
    6
    		] · 2H
     
    2
    		O
    4.FL.65Leisingite
    Cu(Mg,Cu,Fe,Zn)
     
    2
    		[TeO
     
    6
    		] · 6H
     
    2
    		O
    4.FL.70Akdalaite
    4Al
     
    2
    		O
     
    3
    		 · H
     
    2
    		O
    4.FL.75Cafetite
    (Ca,Mg)(Fe,Al)
     
    2
    		Ti
     
    4
    		O
     
    12
    		·4H
     
    2
    		O
    4.FL.80Mourite
    UMo
     
    5
    		O
     
    12
    		(OH)
     
    10
    4.FL.85Deloryite
    Cu
     
    4
    		(UO
     
    2
    		)(MoO
     
    4
    		)
     
    2
    		(OH)
     
    6

    Other Names for Takanelite

    German names:
    Takanelit
    Japanese names:
    高根鉱
    Spanish names:
    Takanelita

    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 Takanelite

    Reference List:Journal of the Japanese Association Min. Petr. Econ. Geol. (1971), 65, 1-15.

    American Mineralogist (1971): 56: 1487.

    American Mineralogist (1991): 76: 1426-1430.

    Internet Links for Takanelite

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  • Look for Takanelite on Wikipedia
  • Look for Takanelite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Takanelite in the Natural History Museum (London) online catalogue
  • Takanelite details from Handbook of Mineralogy (PDF)
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    Localities for Takanelite

    Hide Locality List
    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.
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    (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
     
    • Tasmania
      • Hampshire district
        • Kara Mines
    		Whitehead, 1990; Ralph Bottril 6/10/2005.
    Austria
     
    • Styria
      • Koralpe Mts
        • Wies
          • Oberhaag
            • Lieschengraben
    		Taucher, J. & Postl, W. (1992), Exel, R. (1993)
    Germany
     
    • Bavaria
      • Upper Palatinate
        • Oberpfälzer Wald
          • Vohenstrauß
            • Waidhaus
    		M.E. Ciriotti - 05.06.2008 - Probed
    Japan
     
    • Shikoku Island
      • Ehime prefecture
    		J.Jap.Assoc.Min.Petr.Econ.Geol.(1971) 65, 1-15
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Lovozero Massif
    South Korea
     
    • Gyeongsangbuk-do (Kyongsang-bukto; Gyeongsangbugdo)
      • Bonghwa-gun
    		Amer. Mineral. 76, 1426-1430
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Albula Valley
        • Oberhalbstein (Surses; Sursass)
          • Tinizong (Tinzen)
    • Wallis (Valais)
      • Turtmann Valley
    		The Canadian Mineralogist Vol. 44, pp. 000 (2006) page 205
    Mineral and/or Locality
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