Takanelite
A valid IMA mineral species
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About Takanelite
Formula:
(Mn,Ca)Mn4O9 · H2O
Colour:
Grey, black, gray-brown
Lustre:
Dull
Hardness:
5
Specific Gravity:
3.41
Crystal System:
Hexagonal
Member of:
Name:
Named in honor of Katsutoshi Takane (高根勝利) (1899-1945), Professor of Mineralogy, Tohoku University, Sendai, Japan.
Isostructural with:
Ranciéite-Takanelite Series. The manganese analogue of Ranciéite.
Compare 'UM1989-13-O:HMn' and 'manganogel'.
Compare 'UM1989-13-O:HMn' and 'manganogel'.
Unique Identifiers
Mindat ID:
3871
Long-form identifier:
mindat:1:1:3871:9
IMA Classification of Takanelite
Approved
IMA Formula:
(Mn2+,Ca)2xMn4+1-xO2·0.7H2O
Approval year:
1970
First published:
1971
Classification of Takanelite
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
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
7.10.1.2
7 : MULTIPLE OXIDES
10 : AB4X9
7 : MULTIPLE OXIDES
10 : AB4X9
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 |
|---|---|---|
| Tkn | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Tkn | 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 Takanelite
Dull
Colour:
Grey, black, gray-brown
Streak:
Dark brown
Hardness:
5 on Mohs scale
Density:
3.41 g/cm3 (Measured) 3.98 g/cm3 (Calculated)
Optical Data of Takanelite
Anisotropism:
Moderate, yellowish gray to light brorvnish-gray .
Colour in reflected light:
Yellowish gray.
Pleochroism:
Weak
Comments:
Yellowish-white to yellowish light gray.
Chemistry of Takanelite
Mindat Formula:
(Mn,Ca)Mn4O9 · H2O
Elements listed:
Crystallography of Takanelite
Crystal System:
Hexagonal
Cell Parameters:
a = 2.83 Å, c = 7.24 Å
Ratio:
a:c = 1 : 2.558
Unit Cell V:
50.22 ų (Calculated from Unit Cell)
Comment:
UCD from ICDD 25-164 superceded by Strunz and Nickel (2001)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.57 Å | (100) |
| 4.43 Å | (18) |
| 3.765 Å | (25) |
| 2.462 Å | (15) |
| 2.349 Å | (20) |
| 2.065 Å | (10) |
| 1.754 Å | (7) |
| 1.420 Å | (17) |
Comments:
ICDD 25-164 (Nomura Mine, Japan). Close to PXRD pattern of ranciéite, variable with hydration state.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45b : [Other oxidized fumarolic minerals] | |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Takanelite
General Appearance of Type Material:
Irregularly shaped nodules 1-15 cm across, composed of microscopic intergrowths with other minerals.
Place of Conservation of Type Material:
Tohoku University, Sendai, Japan.
Geological Setting of Type Material:
Oxidation zone of a braunite-rhodochrosite-caryopilite bedded deposit, in low-grade metamorphosed Permian cherts.
Associated Minerals at Type Locality:
Other Language Names for Takanelite
Relationship of Takanelite to other Species
Member of:
Other Members of Birnessite Group:
| Birnessite | (Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O | Mon. 2/m : B2/m |
| Ranciéite | (Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O | Trig. 3 : P3 |
Forms a series with:
Common Associates
Related Minerals - Strunz-mindat Grouping
| 4.FL. | Trébeurdenite | Fe2+2Fe3+4O2(OH)10CO3 · 3H2O |
| 4.FL. | Mariakrite | [Ca4Al2(OH)12(H2O)4][Fe2S4] |
| 4.FL.05 | Muskoxite | Mg7Fe4O13 · 10H2O |
| 4.FL.05 | Jamborite | Ni2+1-xCo3+x(OH)2-x(SO4)x · nH2O |
| 4.FL.05 | Mössbauerite | Fe3+6O4(OH)8[CO3] · 3H2O |
| 4.FL.05 | Meixnerite | Mg6Al2(OH)16(OH)2 · 4H2O |
| 4.FL.05 | Woodallite | Mg6Cr2(OH)16Cl2 · 4H2O |
| 4.FL.05 | Fougèrite | Fe2+4Fe3+2(OH)12[CO3] · 3H2O |
| 4.FL.05 | Dritsite | Li2Al4(OH)12Cl2 · 3H2O |
| 4.FL.05 | Rotemite | Ca4Cr2(OH)12Cl2 · 4H2O |
| 4.FL.05 | Iowaite | Mg6Fe3+2(OH)16Cl2 · 4H2O |
| 4.FL.10 | Hydrocalumite | Ca4Al2(OH)12(Cl,CO3,OH)2 · 4H2O |
| 4.FL.15 | Kuzelite | Ca4Al2(OH)12[SO4] · 6H2O |
| 4.FL.20 | Jianshuiite | (Mg,Mn,Ca)Mn3O7 · 3H2O |
| 4.FL.20 | Ernienickelite | NiMn3O7 · 3H2O |
| 4.FL.20 | Aurorite | Mn2+Mn4+3O7 · 3H2O |
| 4.FL.20 | Chalcophanite | ZnMn4+3O7 · 3H2O |
| 4.FL.25 | Woodruffite | Zn2+x/2(Mn4+1-xMn3+x)O2 · yH2O |
| 4.FL.30 | Asbolane | (Ni,Co)2-xMn4+(O,OH)4 · nH2O |
| 4.FL.30 va | 'Lampadite' | Cu, Mn, O, H |
| 4.FL.35 | Buserite | Na4Mn14O27 · 21H2O |
| 4.FL.40 | Ranciéite | (Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O |
| 4.FL.45 | Birnessite | (Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O |
| 4.FL.55 | Cianciulliite | Mn(Mg,Mn)2Zn2(OH)10 · 2-4H2O |
| 4.FL.60 | Jensenite | Cu3[TeO6] · 2H2O |
| 4.FL.65 | Leisingite | Cu2MgTe6+O6 · 6H2O |
| 4.FL.70 | Magnesiohongruiite-(Fe3+) | (Mg2Fe3+)Fe3+NbO7(OH) |
| 4.FL.70 | Akdalaite | Al10O14(OH)2 |
| 4.FL.75 | Cafetite | CaTi2O5 · H2O |
| 4.FL.80 | Mourite | UMo5O12(OH)10 |
| 4.FL.85 | Deloryite | Cu4(UO2)(MoO4)2(OH)6 |
| 4.FL.90 | Lagalyite | Ca2xMn1-xO2 · 1.5-2H2O |
| 4.FL.95 | 'Tunnerite (of Cornu)' | |
| 4.FL.100 | Carbocalumite | Ca4Al2(OH)12(CO3) · 6H2O |
| 4.FL.100 | Mampsisite | Ca4Al2(CO3)(OH)12 · 5H2O |
Fluorescence of Takanelite
Not fluorescent in UV.
Other Information
Thermal Behaviour:
Large endothermal breaks at about 270° and 1000°, small ones at 120° and 600°. It loses 2.22% H2O at 100° and an additional 4.3% up to 200°.
Notes:
Etch reactions: Concentrated HCl, concentrated HNO3, and concentrated H2SO4 tarnish slightly grayish brown; H2SO4+H2O2 (20%) and saturated SnCl2 solutions quickly stain black.
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 Takanelite
mindat.org URL:
https://www.mindat.org/min-3871.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Takanelite
Reference List:
Dunn, Pete J., Fleischer, Michael, Francis, Carl A., Langley, Richard H., Kissin, Stephen A., Shigley, Hames E., Vanko, David A., Zilczer, Janet A. (1984) New mineral names. American Mineralogist, 69 (7-8) 810-815
Localities for Takanelite
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 | |
| Ralph Bottrill 6/10/2005. +1 other reference |
Austria | |
| Taucher et al. (1992) |
Bosnia and Herzegovina | |
| Bevandić et al. (2018) |
China | |
| Zhongtang Yang et al. (2008) +1 other reference |
Croatia | |
| Bilinski et al. (1996) |
Germany | |
| Lorenz (2004) |
| M.E. Ciriotti - 05.06.2008 - Probed |
| Witzke (2013) |
Japan (TL) | |
| Nambu et al. (1971) |
Poland | |
| Muszyński M. et al. (2009) |
Romania | |
| Munteanu (1993) +1 other reference |
Russia | |
| Kassandrov et al. (2009) |
| Kassandrov et al. (2009) | |
| Pekov et al. (2005) |
| Pekov (2000) |
| Pekov et al. (2013) | |
South Korea | |
| Kim (1991) +2 other references |
Switzerland | |
| |
| Stalder et al. (1998) +1 other reference |
USA | |
| Bargar et al. (2009) |
| Kim (1991) |
| Mineralogical Society of America - ... |
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Malyi Punkaruaiv Mountain, Lovozersky District, Murmansk Oblast, Russia