Taikanite
A valid IMA mineral species
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About Taikanite
Formula:
Sr3BaMn2+2(Si4O12)O2
Colour:
Emerald-green, blackish green
Lustre:
Vitreous
Hardness:
6 - 7
Specific Gravity:
4.72
Crystal System:
Monoclinic
Name:
Named after its discovery locality, the Taikan Range, Khabarovsk Territory, Russia.
This page provides mineralogical data about Taikanite.
Unique Identifiers
Mindat ID:
3869
Long-form identifier:
mindat:1:1:3869:6
Similar Names
| Taconite | A synonym of 'Banded-ferruginous chert' | |
| Tucanite | A synonym of Scarbroite |
IMA Classification of Taikanite
Approved
IMA Formula:
BaSr2Mn3+2O2(Si4O12)
Approval year:
1984
First published:
1985
Classification of Taikanite
9.DH.25
9 : SILICATES (Germanates)
D : Inosilicates
H : Inosilicates with 4-periodic single chains, Si4O12
9 : SILICATES (Germanates)
D : Inosilicates
H : Inosilicates with 4-periodic single chains, Si4O12
65.3.3.1
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
3 : Single-Width Unbranched Chains, W=1 with chains P=4
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
3 : Single-Width Unbranched Chains, W=1 with chains P=4
14.7.10
14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn
14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Tka | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Taikanite
Vitreous
Transparency:
Translucent
Colour:
Emerald-green, blackish green
Hardness:
6 - 7 on Mohs scale
Hardness:
VHN100=831 - 1059 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
{001}
{001}
Fracture:
Conchoidal
Density:
4.72 g/cm3 (Measured) 4.81 g/cm3 (Calculated)
Optical Data of Taikanite
Type:
Biaxial (+)
RI values:
nα = 1.775(3) nβ = 1.792 nγ = 1.814(2)
2V:
Measured: 74° to 80°, Calculated: 84°
Max. Birefringence:
δ = 0.039
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
Dispersion:
r < v medium
Optical Extinction:
X = a; Y = b; Z ∧ c = 44°; X ∧ c = 46°.
Pleochroism:
Strong
Comments:
X = violet to black; Y = Z = emerald-green.
Chemistry of Taikanite
Mindat Formula:
Sr3BaMn2+2(Si4O12)O2
Element Weights:
Common Impurities:
Al,Pb,Mg,Ca,Na,K
Crystallography of Taikanite
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
B2
Setting:
C2
Cell Parameters:
a = 14.600(2) Å, b = 7.759(4) Å, c = 5.142(1) Å
β = 93.25(2)°
β = 93.25(2)°
Ratio:
a:b:c = 1.882 : 1 : 0.663
Unit Cell V:
581.56 ų (Calculated from Unit Cell)
Z:
1
Twinning:
Observed in thin section.
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0001616 | Taikanite | Armbruster T, Oberhansli R, Kunz M (1993) Taikanite, BaSr2Mn2O2[Si4O12], from the Wessels mine, South Africa: A chain silicate related to synthetic Ca3Mn2O2[Si4O12] American Mineralogist 78 1088-1095 |  | 1993 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.912 Å | (100) |
| 2.832 Å | (90) |
| 2.569 Å | (80) |
| 3.270 Å | (70) |
| 1.946 Å | (60) |
| 3.440 Å | (40) |
| 1.718 Å | (40) |
Comments:
Irnimi deposit, Russia. Data from type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits |
Type Occurrence of Taikanite
Co-Type Localities:
General Appearance of Type Material:
Equant grains several tenths of a millimeter in size; rarely elongate to 1.6 mm.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 84394.
Geological Setting of Type Material:
Hydrothermal manganese ores.
Associated Minerals at Type Locality:
Synonyms of Taikanite
Other Language Names for Taikanite
Common Associates
Associations Based on Photo Data:
| 4 photos of Taikanite associated with Strakhovite | NaBa3Mn2+2Mn3+2Si6O19(OH)3 |
| 4 photos of Taikanite associated with Namansilite | NaMn3+Si2O6 |
| 4 photos of Taikanite associated with Braunite | Mn2+Mn3+6(SiO4)O8 |
| 4 photos of Taikanite associated with Pectolite | NaCa2Si3O8(OH) |
Related Minerals - Strunz-mindat Grouping
| 9.DH. | Devilliersite | Ca4Ca2Fe3+10O4[(Fe3+10Si2)O36] |
| 9.DH. | 'Gageite-2M' | (Mn,Mg,Zn)42Si16O54(OH)40 |
| 9.DH. | Bavsiite | Ba2V2O2[Si4O12] |
| 9.DH. | Yuzuxiangite | Sr3Fe3+(Si2O6)2(OH) · 3H2O |
| 9.DH. | Louisfuchsite | Ca2(Mg4Ti2)(Al4Si2)O20 |
| 9.DH.05 | Leucophanite | NaCaBeSi2O6F |
| 9.DH.10 | Ohmilite | Sr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O |
| 9.DH.15 | Haradaite | SrVSi2O7 |
| 9.DH.15 | Suzukiite | BaVSi2O7 |
| 9.DH.20 | Shcherbakovite | (K,Ba)KNa(Ti,Nb)2(Si4O12)O2 |
| 9.DH.20 | Batisite | BaNaNaTi2(Si4O12)O2 |
| 9.DH.20 | Noonkanbahite | BaKNaTi2(Si4O12)O2 |
| 9.DH.30 | Krauskopfite | BaSi2O5 · 3H2O |
| 9.DH.35 | Gageite | Mn21(Si4O12)2O3(OH)20 |
| 9.DH.35 | Balangeroite | (Mg,Fe2+,Fe3+,Mn2+)42Si16O54(OH)40 |
| 9.DH.40 | Kuratite | Ca2(Fe2+5Ti)O2[Si4Al2O18] |
| 9.DH.40 | Aenigmatite | Na4[Fe2+10Ti2]O4[Si12O36] |
| 9.DH.40 | Dorrite | Ca4(Mg3Fe3+9)O4(Si3Al8Fe3+O36) |
| 9.DH.40 | Serendibite | Ca4[Mg6Al6]O4[Si6B3Al3O36] |
| 9.DH.40 | Rhönite | Ca4[Mg8Fe3+2Ti2]O4[Si6Al6O36] |
| 9.DH.40 | Khesinite | Ca4(Mg3Fe3+9)O4(Fe3+9Si3)O36 |
| 9.DH.40 | 'UM1991-29-SiO:FeMgNa' | Na4(Mg5Fe3+7)O4[Si9Fe3+3O36] |
| 9.DH.40 | Høgtuvaite | Ca4[Fe2+6Fe3+6]O4[Si8Be2Al2O36] |
| 9.DH.40 | 'Leucorhönite' | Ca2(Mg,Fe3+,Al)6(Si,Al)6O20 |
| 9.DH.40 | Welshite | Ca4Mg9Sb3O4[Si6Be3AlFe2O36] |
| 9.DH.40 | Wilkinsonite | Na2Fe2+4Fe3+2(Si6O18)O2 |
| 9.DH.40 | Krinovite | Na2Mg4Cr3+2(Si6O18)O2 |
| 9.DH.40 | Makarochkinite | (Ca,Na)4[Fe2+8Fe3+2Ti2]O4[Si8Be2Al2O36] |
| 9.DH.45 | Sapphirine | Mg4(Mg3Al9)O4[Si3Al9O36] |
| 9.DH.50 | Khmaralite | (Mg,Al,Fe)16[(Al,Si,Be)12O36]O4 |
| 9.DH.55 | 'UM1988-26-SiO:AlMg' | Mg4Al2O[Si3Al2O15] |
| 9.DH.55 | Surinamite | (Mg,Fe)3Al4BeSi3O16 |
| 9.DH.60 | Deerite | Fe2+6Fe3+3(Si6O17)O3(OH)5 |
| 9.DH.65 | Taneyamalite | (Na,Ca)Mn2+12(Si,Al)12(O,OH)44 |
| 9.DH.65 | Howieite | Na(Fe2+,Fe3+,Al,Mg)12(Si6O17)2(O,OH)10 |
| 9.DH.70 | Johninnesite | Na2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2 |
| 9.DH.75 | Agrellite | NaCa2Si4O10F |
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 Taikanite
mindat.org URL:
https://www.mindat.org/min-3869.html
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References for Taikanite
Reference List:
Jambor, L., Burke, Ernst A. J. (1993) New Mineral Names. American Mineralogist, 78 (7-8) 845-849 p.849
Localities for Taikanite
Showing 4 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.
Russia | |
| Kalinin +4 other references |
| Pekov (1998) |
| Pekov (1998) |
South Africa | |
| Armbruster et al. (1993) +1 other reference |
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Dzhavodi area, Ir-Nimi manganese deposit, Taikan Ridge, Khabarovsk Krai, Russia