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Tinaksite

A valid IMA mineral species
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08610610014947420388579.jpg
Tinaksite, etc.

Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
05053870014947460642862.jpg
Tinaksite

Grozovoi area, Sirenevyi Kamen' Deposit, Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
09155240014947247311315.jpg
Tinaksite, etc.

Apatitovyi Tsirk, Rasvumchorr Mine, Rasvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia
08610610014947420388579.jpg
Tinaksite, etc.

Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
01433680014947422046446.jpg
Tinaksite

Grozovoi area, Sirenevyi Kamen' Deposit, Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
02568270014948915686781.jpg
Tinaksite, etc.

Apatitovyi Tsirk, Rasvumchorr Mine, Rasvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia
08610610014947420388579.jpg
Tinaksite, etc.

Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
05053870014947460642862.jpg
Tinaksite

Grozovoi area, Sirenevyi Kamen' Deposit, Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
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About TinaksiteHide

Formula:
K2Na(Ca,Mn2+)2TiO[Si7O18(OH)]
Colour:
Yellowish, grayish-white
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
2.82 - 2.90
Crystal System:
Triclinic
Name:
The name reflects its composition: titanium (Ti), sodium (Na) potassium (K) and silicon (Si).
Isostructural with:
Tokkoite
The K analogue of senkevichite. Chemically somewhat similar to faizievite and odintsovite. When compared to tokkoite, it has smaller lattice constants (mainly the parameter b), shorter distances, shorter M1-M3 and O20-O2 bonds, and less distorted M1 polyhedron. There is some Fe3+ in the structure.


Unique IdentifiersHide

Mindat ID:
3966
Long-form identifier:
mindat:1:1:3966:2
GUID
(UUID V4):
68683f1a-cde8-4fd7-8d09-18133d07ec2c

IMA Classification of TinaksiteHide

IMA status:
Approved
IMA Formula:
K2NaCa2TiSi7O18(OH)O
First published:
1965

Classification of TinaksiteHide

Strunz-mindat (2024):
9.DG.75

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
Dana 8th ed.:
67.2.1.1

67 : INOSILICATES Unbranched Chains with W > 2
2 : Unbranched Chains with W>2 with W=5
Hey's CIM Ref.:
14.9.36

14 : Silicates not Containing Aluminum
9 : Silicates of Ti

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
TnkIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of TinaksiteHide

Lustre:
Vitreous
Transparency:
Transparent, Translucent
Colour:
Yellowish, grayish-white
Hardness:
6 on Mohs scale
Cleavage:
Perfect
Perfect on {010}, imperfect on {110}; (010) ∧ (110) =
131.5°.
Density:
2.82 - 2.90 g/cm3 (Measured)    2.85 g/cm3 (Calculated)

Optical Data of TinaksiteHide

Type:
Biaxial (+)
RI values:
nα = 1.593 nβ = 1.621 nγ = 1.666
Max Birefringence:
δ = 0.073
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none
Optical Extinction:
X' ∧ {010} = 1°-4°; Y ∧ {010} = 16°-18°.

Chemistry of TinaksiteHide

Mindat Formula:
K2Na(Ca,Mn2+)2TiO[Si7O18(OH)]
Elements listed:
Ca, H, K, Mn, Na, O, Si, Ti - search for minerals with similar chemistry
Common Impurities:
Al,Fe,Mg,H2O

Crystallography of TinaksiteHide

Crystal System:
Triclinic
Cell Parameters:
a = 10.37 Å, b = 12.16 Å, c = 7.05 Å
α = 90.91°, β = 99.31°, γ = 92.76°
Ratio:
a:b:c = 0.853 : 1 : 0.58
Unit Cell V:
876.02 ų (Calculated from Unit Cell)
Comment:
Mean parameters concerning the structure refinement (Lacalamita et al., 2016): a~10.373, b~12.176, c~7.057, α~90.82, β~99.22, γ~92.80, V~878.5

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0009701TinaksiteBissert G (1980) Verfeinerung der struktur von tinaksit, Ca2K2NaTiO[Si7O18(OH)] Acta Crystallographica B36 259-26319800293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.03 Å(100)
3.25 Å(80)
2.331 Å(55)
3.09 Å(50)
2.952 Å(50)
2.865 Å(50)
2.674 Å(45)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations

Type Occurrence of TinaksiteHide

Type Locality:
ⓘ Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia
General Appearance of Type Material:
Well-bounded prismatic crystals from tenths of a mm to several cm, often grouped in radiating fibrous aggregates and rosettes up to 3-5 cm in diameter.
Place of Conservation of Type Material:
n.d.
Geological Setting of Type Material:
K-feldspar metasomatites at the contact of the massif with limestones.
Associated Minerals at Type Locality:
K FeldsparAegirineQuartzCanasiteXonotlite

Other Language Names for TinaksiteHide

German:Tinaksit
Spanish:Tinaksita

Common AssociatesHide

Associated Minerals Based on Photo Data:
103 photos of Tinaksite associated with Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2O
73 photos of Tinaksite associated with AegirineNaFe3+Si2O6
7 photos of Tinaksite associated with FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2O
6 photos of Tinaksite associated with Fedorite(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O
5 photos of Tinaksite associated with PectoliteNaCa2Si3O8(OH)
3 photos of Tinaksite associated with SteacyiteK0.3(Na,Ca)2ThSi8O20
3 photos of Tinaksite associated with QuartzSiO2
3 photos of Tinaksite associated with CanasiteK3Na3Ca5Si12O30(OH)4
2 photos of Tinaksite associated with MicroclineK(AlSi3O8)
2 photos of Tinaksite associated with Charoitite

Related Minerals - Strunz-mindat GroupingHide

9.DG.CalcinaksiteKNaCa(Si4O10) · H2OTric. 1 : P1
9.DG.Barrydawsonite-(Y)Na1.5Y0.5CaSi3O8(OH)Mon. 2/m : P21/b
9.DG.ParatobermoriteCa4(Al0.5Si0.5)2Si4O16(OH)(H2O)2 · (Ca · 3H2O)Mon. 2/m
9.DG.AlvesiteNaKZrSi6O15 · 2H2OOrth. mmm (2/m 2/m 2/m)
9.DG.02SteedeiteNaMn2[Si3BO9](OH)2Tric. 1 : P1
9.DG.02NolzeiteNaMn2[Si3BO9](OH)2 · 2H2OTric. 1 : P1
9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric. 1
9.DG.05PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05WollastoniteCa3(Si3O9)Tric. 1 : P1
9.DG.05Wollastonite-1ACaSiO3Tric. 1 : P1
9.DG.05TanohataiteLiMn2Si3O8(OH)Tric. 1 : P1
9.DG.05SchizoliteNaCaMnSi3O8(OH)Tric. 1 : P1
9.DG.05MurakamiiteLiCa2Si3O8(OH)Tric. 1 : P1
9.DG.05DalnegorskiteCa5Mn(Si3O9)2Tric. 1 : P1
9.DG.07CascanditeCaScSi3O8(OH)Tric. 1
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O)Orth.
9.DG.10Clinotobermorite[Ca4Si6O17 · 2H2O] · (Ca · 3H2O)Mon.
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
9.DG.10TobermoriteCa4Si6O17(H2O)2 · (Ca · 3H2O)Mon. 2 : P21
9.DG.12JusiteNa2Ca15Al4Si16O54 · 17H2O
9.DG.12KenotobermoriteCa4Si6O15(OH)2(H2O)2 · 3H2OMon.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric. 1 : P1
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric. 1 : P1
9.DG.20KameneviteK2TiSi3O9 · H2OOrth. 2 2 2 : P21 21 21
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth. mm2
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth. 2 2 2 : P21 21 21
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
9.DG.32Escheite Ca2NaMnTi5[Si12O34]O2(OH)3 · 12H2OOrth. mm2 : Ama2
9.DG.35XonotliteCa6(Si6O17)(OH)2Mon. 2/m : B2/m
9.DG.40HillebranditeCa2(SiO3)(OH)2Orth. mmm (2/m 2/m 2/m) : Cmcm
9.DG.45ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2OOrth.
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2OOrth. 2 2 2 : C2 2 2
9.DG.55EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
9.DG.60EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2OOrth.
9.DG.65PatyniteNaKCa4[Si9O23]Tric. 1 : P1
9.DG.67WhelaniteCu2+2Ca6[Si6O17(OH)](CO3)(OH)3 · 2H2OOrth. mm2 : Pnn2
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric. 1 : P1
9.DG.70LitidioniteCuNaKSi4O10Tric. 1 : P1
9.DG.70ManaksiteKNaMnSi4O10Tric. 1 : P1
9.DG.70YusupoviteNa2Zr(Si6O15) · 2.5H2OMon. 2/m : B2/m
9.DG.70EnricofrancoiteKNaCaSi4O10Tric. 1 : P1
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.75SenkevichiteCsKNaCa2TiO[Si7O18](OH)Tric. 1 : P1
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4Mon. m : Bm
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2OMon. m : Bm
9.DG.85MiseriteK1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2OTric.
9.DG.90FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2OTric. 1 : P1
9.DG.92Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2OMon. 2/m : P21/m
9.DG.95YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Mon. 2/m : P21/m
9.DG.97Eveslogite(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14Mon. 2/m : P2/m

Other InformationHide

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

Tinaksite in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for TinaksiteHide

References for TinaksiteHide

Localities for TinaksiteHide

This 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.

Locality ListHide

- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Aldan Shield
    • Chara and Tokko Rivers Confluence
[Lapis 1993:4 p.13-20] +2 other references
Kaneva +4 other references
Pavel.M. Kartashov (n.d.) +3 other references
- (n.d.)
Konev et al. (1996) +1 other reference
Vorob'yov E.I. (2008)
Vorob'yov E.I. (2008)
Pavel.M. Kartashov (n.d.)
  • Irkutsk Oblast
Vladykin et al. (2008)
  • Murmansk Oblast
    • Khibiny Massif
      • Rasvumchorr Mt
        • Rasvumchorr Mine
Pavel.M. Kartashov (n.d.)
      • The Carbonatite Stock in the vicinity of Tul'ilukht Bay
[Mandarino
Saudi Arabia
 
  • Medina Region
Faheha et al. (2012)
Quick NavTopAbout TinaksiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence Other LanguagesCommon AssociatesStrunz-MindatOther InformationTinaksite in petrologyInternet Links References Localities Locality List
 
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