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Clinotobermorite

A valid IMA mineral species
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08534720017271922148507.jpg
Clinotobermorite

Bazhenovskoye deposit, Asbest, Sverdlovsk Oblast, Russia
04099920017271922177399.jpg
Clinotobermorite, etc.

Basalt quarry, S. Marco hill, Gambellara, Vicenza Province, Veneto, Italy
06780180017271922203887.jpg
Clinotobermorite

Bazhenovskoye deposit, Asbest, Sverdlovsk Oblast, Russia
08534720017271922148507.jpg
Clinotobermorite

Bazhenovskoye deposit, Asbest, Sverdlovsk Oblast, Russia
04099920017271922177399.jpg
Clinotobermorite, etc.

Basalt quarry, S. Marco hill, Gambellara, Vicenza Province, Veneto, Italy
06780180017271922203887.jpg
Clinotobermorite

Bazhenovskoye deposit, Asbest, Sverdlovsk Oblast, Russia
08534720017271922148507.jpg
Clinotobermorite

Bazhenovskoye deposit, Asbest, Sverdlovsk Oblast, Russia
04099920017271922177399.jpg
Clinotobermorite, etc.

Basalt quarry, S. Marco hill, Gambellara, Vicenza Province, Veneto, Italy
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About ClinotobermoriteHide

Formula:
Ca5Si6O17 · 5H2O
Colour:
Colorless to white
Lustre:
Vitreous
Hardness:
4½
Specific Gravity:
2.58
Crystal System:
Monoclinic
Name:
Redefined in by IMA in 2014, according to new nomenclature for the Tobermorite Group.
Dimorph of:
Tobermorite
Structurally closely related to Tobermorite.
A Ca-poor analogue may exist.
Two natural polytypes are known: Clinotobermorite-2M and Clinotobermorite-1A.


Unique IdentifiersHide

Mindat ID:
1084
Long-form identifier:
mindat:1:1:1084:5

IMA Classification of ClinotobermoriteHide

IMA status:
Approved
IMA status notes:
Renamed by the IMA
IMA Formula:
Ca5Si6O17·5H2O
Approval year:
1990
Approval history:
Renamed by IMA: 2014
Type description reference:
Henmi, C., Kusachi, I. (1992) Clinotobermorite, Ca5Si6(O,OH)18·5H2O, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 56 (384) 353-358 doi:10.1180/minmag.1992.056.384.07

Classification of ClinotobermoriteHide

Strunz-mindat (2026):
9.DG.10

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
Dana 8th ed.:
72.3.2.2

72 : PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
3 : Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 3-, 4-, or 5-membered rings and 8-membered rings
Hey's CIM Ref.:
14.5.24

14 : Silicates not Containing Aluminum
5 : Silicates of Ca

Mineral SymbolsHide

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.

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

Lustre:
Vitreous
Transparency:
Translucent
Colour:
Colorless to white
Hardness:
4½ on Mohs scale
Cleavage:
Perfect
Perfect on {001}, poor on {100}.
Density:
2.58 g/cm3 (Measured)    2.69 g/cm3 (Calculated)

Optical Data of ClinotobermoriteHide

Type:
Biaxial (+/-)
RI values:
nα = 1.575 nβ = 1.580 nγ = 1.585
2V:
Measured: 89° , Calculated: 88°
Max. Birefringence:
δ = 0.010
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
Moderate
Dispersion:
very weak

Chemistry of ClinotobermoriteHide

Mindat Formula:
Ca5Si6O17 · 5H2O
Element Weights:
Element% weight
O48.153 %
Ca27.414 %
Si23.053 %
H1.379 %

Calculated from ideal end-member formula.
Elements listed:
Ca, H, O, Si - search for minerals with similar chemistry
Common Impurities:
Ti,B,Al,Fe,Mn,Mg,Na,K,F

Crystallography of ClinotobermoriteHide

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Comment:
Clinotobermorite-1AClinotobermorite-2M
Ca5Si6O17 · 5H2OCa5Si6O17 · 5H2O
Triclinic Monoclinic 
1 - Pedial2/m - Prismatic
P1 
  
a = 11.274 Å, b = 7.344 Å, c = 11.468 Å
α = 99.18°, β = 97.19°, γ = 90.02°		a = 11.276(2) Å, b = 7.343(8) Å, c = 22.642(4) Å
β = 97.28°
a:b:c = 1.535 : 1 : 1.562a:b:c = 1.536 : 1 : 3.083
V 929.78 ų
(Calculated from Unit Cell)		V 1,859.64 ų
(Calculated from Unit Cell)
  
 Space Group: Cc

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0011075ClinotobermoriteHoffmann C, Armbruster T (1997) Clinotobermorite, Ca5(Si3O8(OH))2*4(H2O) - Ca5(Si6O17)*5(H2O), a natural C-S-H(I) type cement mineral: determination of the substructure _cod_database_code 1000046 Zeitschrift fur Kristallographie 212 863-8731997Wessels mine, Kalahari manganese field, South Africa0293
0006832ClinotobermoriteMerlino S, Bonaccorsi E, Armbruster T (2000) The real structure of clinotobermorite and tobermorite 9 A: OD character, polytypes, and structural relationships European Journal of Mineralogy 12 411-42920000293
0006831ClinotobermoriteMerlino S, Bonaccorsi E, Armbruster T (2000) The real structure of clinotobermorite and tobermorite 9 A: OD character, polytypes, and structural relationships European Journal of Mineralogy 12 411-42920000293
0006830ClinotobermoriteMerlino S, Bonaccorsi E, Armbruster T (2000) The real structure of clinotobermorite and tobermorite 9 A: OD character, polytypes, and structural relationships European Journal of Mineralogy 12 411-42920000293
0002328ClinotobermoriteMerlino S, Bonaccorsi E, Armbruster T (1999) Tobermorites: Their real structure and order-disorder (OD) character American Mineralogist 84 1613-162119990293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.25 Å(100)
3.304 Å(51)
3.068 Å(45)
3.034 Å(60)
3.012 Å(37)
2.811 Å(41)
2.794 Å(60)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3b: Earth’s earliest hydrosphere>4.45
13 : Hadean serpentinization
High-? alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations

Type Occurrence of ClinotobermoriteHide

Type Locality:
ⓘ Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan
Place of Conservation of Type Material:
National Science Museum, Tokyo, Japan
Empirical Formula of Type Material:
(Ca5.29Mg0.02K0.02)5.33(Si5.90Al0.05B0.05)6.00(O16.54OH1.39F0.07)18.00 · 5.1H2O
Chemical Analysis of Type Material:
SiO246.55 %
TiO20.01 %
Al2O30.36 %
B2O30.23 %
Fe2O30.01 %
MnO0.06 %
MgO0.11 %
CaO39.04 %
Na2O0.02 %
K2O0.10 %
H2O13.75 %
F0.18 %
-O=F0.08 %
Total:100.5 %
Geological Setting of Type Material:
gehlenite-spurrite-bearing skarns
Associated Minerals at Type Locality:
Apophyllite GroupCalciteTobermorite
Reference:
Henmi, C., Kusachi, I. (1992) Clinotobermorite, Ca5Si6(O,OH)18·5H2O, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 56 (384) 353-358 doi:10.1180/minmag.1992.056.384.07

Synonyms of ClinotobermoriteHide

Other Language Names for ClinotobermoriteHide

Relationship of Clinotobermorite to other SpeciesHide

Member of:
Tobermorite Supergroup
Other Members of Tobermorite Supergroup:
ParatobermoriteCa5AlSi5O16(OH) · 5H2OMon. 2/m
PlombièriteCa5Si6O16(OH)2 · 7H2OOrth.
RiversideiteCa5Si6O16(OH)2 · 2H2O Orth.
Tobermorite GroupCa4+x(AlySi6-y)O15+2x-y · 5H2O

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Clinotobermorite associated with TobermoriteCa5Si6O17 · 5H2O

Related Minerals - Strunz-mindat GroupingHide

9.DG.Barrydawsonite-(Y)Na1.5Y0.5CaSi3O8(OH)Mon. 2/m : P21/b
9.DG.ParatobermoriteCa5AlSi5O16(OH) · 5H2OMon. 2/m
9.DG.CalcinaksiteKNaCa(Si4O10) · H2OTric. 1 : P1
9.DG.AlvesiteNaKZrSi6O15 · 2H2OOrth. mmm(2/m2/m2/m)
9.DG.02SteedeiteNaMn2[Si3BO9](OH)2Tric. 1 : P1
9.DG.02NolzeiteNaMn2[Si3BO9](OH)2 · 2H2OTric. 1 : P1
9.DG.05MurakamiiteLiCa2Si3O8(OH)Tric. 1 : P1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
9.DG.05TanohataiteLiMn2Si3O8(OH)Tric. 1 : P1
9.DG.05DalnegorskiteCa5Mn2+(Si3O9)2Tric. 1 : P1
9.DG.05'Wollastonite-1A'CaSiO3Tric. 1 : P1
9.DG.05WollastoniteCa3(Si3O9)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric. 1
9.DG.05SchizoliteNaCaMnSi3O8(OH)Tric. 1 : P1
9.DG.07CascanditeCaScSi3O8(OH)Tric. 1
9.DG.08PlombièriteCa5Si6O16(OH)2 · 7H2OOrth.
9.DG.10RiversideiteCa5Si6O16(OH)2 · 2H2O Orth.
9.DG.10TobermoriteCa5Si6O17 · 5H2OMon. 2 : P21
9.DG.12JusiteNa2Ca15Al4Si16O54 · 17H2O
9.DG.12KenotobermoriteCa4Si6O15(OH)2 · 5H2OMon.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric. 1 : P1
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric. 1 : P1
9.DG.20KameneviteK2TiSi3O9 · H2OOrth. 222 : P212121
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth. mm2
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth. 222 : P212121
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/m2/m2/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/m2/m2/m) : Cmmm
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2OOrth. 222 : C222
9.DG.55EpididymiteNa2Be2Si6O15 · H2OOrth. mmm(2/m2/m2/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.70EnricofrancoiteKNaCaSi4O10Tric. 1 : P1
9.DG.70YusupoviteNa2Zr(Si6O15) · 2.5H2OMon. 2/m : B2/m
9.DG.70LitidioniteKNaCuSi4O10Tric. 1 : P1
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric. 1 : P1
9.DG.70ManaksiteKNaMnSi4O10Tric. 1 : P1
9.DG.75SenkevichiteCsKNaCa2TiO[Si7O18](OH)Tric. 1 : P1
9.DG.75TinaksiteK2Na(Ca,Mn2+)2TiO[Si7O18(OH)]Tric.
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2OMon. m : Bm
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4Mon. 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.

Internet Links for ClinotobermoriteHide

References for ClinotobermoriteHide

Reference List:
Henmi, C., Kusachi, I. (1992) Clinotobermorite, Ca5Si6(O,OH)18·5H2O, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 56 (384) 353-358 doi:10.1180/minmag.1992.056.384.07
Jambor, L., Burke, Ernst A. J., Grew, Edward S., Puziewicz, Jacek (1993) New Mineral Names. American Mineralogist, 78 (5-6) 672-678
Hoffmann, C.; Armbruster, T. (1997) Clinotobermorite, Ca5[Si3O8(OH)]2 · 4 H2O \p=n-\ Ca5[Si6O17] · 5 H2O, a natural C\p=n-\S\p=n-\H(I) type cement mineral: determination of the substructure. Zeitschrift für Kristallographie, 212 (12). 864-873 doi:10.1524/zkri.1997.212.12.864
Mandarino, Joseph A. (1997) New Minerals 1990-1994. The Mineralogical Record Inc., Tuscon, Arizona. 220pp.
Merlino, Stefano, Bonaccorsi, Elena, Armbruster, Thomas (1999) Tobermorites; their real structure and order-disorder (OD) character. American Mineralogist, 84 (10) 1613-1621 doi:10.2138/am-1999-1015
Merlino, Stefano, Bonaccorsi, Elena, Armbruster, Thomas (2001) The real structure of tobermorite 11A: normal and anomalous forms, OD character and polytypic modifications. European Journal of Mineralogy, 13 (3) 577-590 doi:10.1127/0935-1221/2001/0013-0577
Merlino, Stefano, Bonaccorsi, Elena (2008) Double wollastonite chains: topological/conformational varieties, polytypic forms, isotypic compounds. Zeitschrift für Kristallographie - Crystalline Materials, 223 (1-2). 85-97 doi:10.1524/zkri.2008.0006
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) New minerals and nomenclature modifications approved in 2014, CNMNC Newsletter No 21. Mineralogical Magazine, 78 (4) 797-804 doi:10.1180/minmag.2014.078.4.03
Biagioni, Cristian, Merlino, Stefano, Bonaccorsi, Elena (2015) The tobermorite supergroup: a new nomenclature. Mineralogical Magazine, 79 (2) 485-495 doi:10.1180/minmag.2015.079.2.22
(2021) Clinotobermorite. Handbook of Mineralogy. Mineralogical Society of America

Localities for ClinotobermoriteHide

Showing 6 localities.

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.
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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.
Italy
 
  • Veneto
    • Vicenza Province
      • Cornedo Vicentino
        • Spagnago
Boscardin et al. (2011) +1 other reference
      • Gambellara
        • S. Marco hill
Boscardin et al. (2011)
Boscardin et al. (2011)
Japan (TL)
 
  • Okayama Prefecture
    • Takahashi City
      • Bitchū
        • Fuka
Henmi et al. (1992)
Russia
 
  • Sverdlovsk Oblast
    • Asbest
Belakovskiy (2003)
South Africa
 
  • Northern Cape
    • John Taolo Gaetsewe District Municipality
      • Joe Morolong Local Municipality
Biagioni et al. (2012)
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