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Calcinaksite

A valid IMA mineral species
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07990140014950756312855.jpg
Calcinaksite

Bellerberg volcano, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
09248690016594716401968.jpg
Calcinaksite

Bellerberg volcano, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
07990140014950756312855.jpg
Calcinaksite

Bellerberg volcano, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
09248690016594716401968.jpg
Calcinaksite

Bellerberg volcano, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
07990140014950756312855.jpg
Calcinaksite

Bellerberg volcano, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
09248690016594716401968.jpg
Calcinaksite

Bellerberg volcano, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
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About CalcinaksiteHide

Formula:
KNaCa(Si4O10) · H2O
Colour:
Colorless to light gray
Hardness:
5
Specific Gravity:
2.62
Crystal System:
Triclinic
Name:
Calcinaksite is named for the chemical composition and by analogy to the related minerals manaksite and fenaksite.
This page provides mineralogical data about Calcinaksite.


Unique IdentifiersHide

Mindat ID:
45972
Long-form identifier:
mindat:1:1:45972:5
GUID
(UUID V4):
aa66c593-c678-43a4-9f4b-a70adb86b147

IMA Classification of CalcinaksiteHide

IMA status:
Approved
Approval year:
2013

Classification of CalcinaksiteHide

Strunz-mindat (2023):
9.DG.

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains

Mineral SymbolsHide

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

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

Physical Properties of CalcinaksiteHide

Colour:
Colorless to light gray
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
perfect on {001} and less perfect on {010}
Density:
2.62(2) g/cm3 (Measured)    2.623 g/cm3 (Calculated)

Optical Data of CalcinaksiteHide

Type:
Biaxial (+)
RI values:
nα = 1.542(2) nβ = 1.550(2) nγ = 1.565(3)
2V:
Measured: 75° (10)
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
medium, r<v.

Chemistry of CalcinaksiteHide

Mindat Formula:
KNaCa(Si4O10) · H2O
Elements listed:
Ca, H, K, Na, O, Si - search for minerals with similar chemistry

Crystallography of CalcinaksiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 7.021(2) Å, b = 8.250(3) Å, c = 10.145(2) Å
α = 102.23(2)°, β = 100.34(2)°, γ = 115.09(3)°
Ratio:
a:b:c = 0.851 : 1 : 1.23
Unit Cell V:
495.44 ų (Calculated from Unit Cell)
Z:
2
Comment:
P1¯

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.300 Å(67)
3.173 Å(95)
3.060 Å(100)
2.851 Å(83)
2.664 Å(62)
2.493 Å(52)
1.749 Å(45)
Comments:
From Type Description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations
Stage 5: Initiation of plate tectonics<3.5-2.5
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)

Type Occurrence of CalcinaksiteHide

Type Locality:
ⓘ Bellerberg volcano, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
General Appearance of Type Material:
Clusters of colourless to light-grey subhedral prismatic crystals
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4419/1
Geological Setting of Type Material:
A xenolith of metamorphosed carbonate-rich rock in an alkaline magma
Associated Minerals at Type Locality:
WollastoniteTobermoriteQuartzLarniteJennite
GehleniteEttringiteCalciteBrownmilleriteAragonite

Synonyms of CalcinaksiteHide

Relationship of Calcinaksite to other SpeciesHide

Member of:
Litidionite Group
Other Members of this group:
EnricofrancoiteKNaCaSi4O10Tric. 1 : P1
Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric. 1 : P1
LitidioniteCuNaKSi4O10Tric. 1 : P1
ManaksiteKNaMnSi4O10Tric. 1 : P1

Related Minerals - Strunz-mindat GroupingHide

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.EnricofrancoiteKNaCaSi4O10Tric. 1 : P1
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.75TinaksiteK2Na(Ca,Mn2+)2TiO[Si7O18(OH)]Tric.
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

Fluorescence of CalcinaksiteHide

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.

Internet Links for CalcinaksiteHide

References for CalcinaksiteHide

Localities for CalcinaksiteHide

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.
Germany (TL)
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Vordereifel
Mineralogical Magazine, 77, 3249-3258
Chukanov, N.V., Aksenov, S.M., Rastsvetaeva, R.K., Blass, G., Varlamov, D.A., Pekov, I.V., Belakovskiy, D.I. and Gurzhiy, V.V. (2013) Calcinaksite, IMA 2013-081. CNMNC Newsletter No. 18, December 2013, page 3254
S. M. Aksenov, R. K. Rastsvetaeva, N. V. Chukanov and U. Kolitsch (2014): Structure of calcinaksite KNa[Ca(H2O)][Si4O10], the first hydrous member of the litidionite group of silicates with [Si8O20]8- tubes. Acta Crystallogr. B70, 768-775.
Italy
 
  • Campania
    • Naples
      • Somma-Vesuvius Complex
Balassone, G.
Petti, C.
Mondillo, N.
Panikorovskii, T.L.
de Gennaro, R.
Cappelletti, P.
Altomare, A.
Corriero, N.
Cangiano, M.
D’Orazio, L. (2019) Copper Minerals at Vesuvius Volcano (Southern Italy): A Mineralogical Review. Minerals 9, 730.
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