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Clinotobermorite

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Formula:
[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
Hardness:
Crystal System:
Monoclinic
Name:
Redefined in by IMA in 2014, according to new nomenclature for the Tobermorite Group.
Structurally closely related to Tobermorite.
A Ca-poor analogue may exist.
Two natural polytypes are known: Clinotobermorite-2M and Clinotobermorite-1A.


Hide all sections | Show all sections

Classification of ClinotobermoriteHide

Approved
Notes:
Renamed by the IMA
Approval History:
Renamed by IMA: 2014
9.DG.10

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
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
14.5.24

14 : Silicates not Containing Aluminum
5 : Silicates of Ca

Physical Properties of ClinotobermoriteHide

Hardness:
4½ on Mohs scale

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
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
very weak

Chemical Properties of ClinotobermoriteHide

Formula:
[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
IMA Formula:
Ca5Si6O17 · 5H2O
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:
Clinotobermorite-1AClinotobermorite-2M
  
Triclinic Monoclinic 
  
  
  
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)
  

X-Ray Powder DiffractionHide

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

Type Occurrence of ClinotobermoriteHide

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 %
Reference:
Henmi, C., & Kusachi, I. (1992). Clinotobermorite, Ca5Si6 (O, OH) 18.5 H2O, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 56(3), 353-358.

Synonyms of ClinotobermoriteHide

Other Language Names for ClinotobermoriteHide

Relationship of Clinotobermorite to other SpeciesHide

Other Members of this group:
Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
Tobermorite GroupTobermorite group compounds are well known in the cement industry.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Tobermorite1 photo of Clinotobermorite associated with Tobermorite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric.
9.DG.05PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05WollastoniteCaSiO3Tric. 1 : P1
9.DG.05Wollastonite-1ACaSiO3Tric.
9.DG.07CascanditeCa(Sc,Fe3+)(HSi3O9)Tric.
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
9.DG.10Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric.
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
9.DG.35XonotliteCa6(Si6O17)(OH)2Mon. 2/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.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric.
9.DG.70LitidioniteCuNaKSi4O10Tric.
9.DG.70ManaksiteKNaMnSi4O10Tric.
9.DG.75TinaksiteK2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)]Tric.
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.75SenkevichiteCsKNaCa2Ti[O|Si7O18(OH)]Tric. 1 : P1
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4
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.
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)3Orth.
9.DG.97Eveslogite(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14Mon. 2/m : P2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

72.3.2.1Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.
72.3.2.3Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
72.3.2.4RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
72.3.2.5OkeniteCa10Si18O46 · 18H2OTric. 1 : P1
72.3.2.6TacharaniteCa12Al2Si18O33 (OH)36Mon.
72.3.2.7NekoiteCa3Si6O15·7H2OTric. 1 : P1
72.3.2.8OyeliteCa10Si8B2O29 · 12.5H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.5.1WollastoniteCaSiO3Tric. 1 : P1
14.5.2Wollastonite-7TCaSiO3
14.5.3Wollastonite-2MCaSiO3Mon.
14.5.4RankiniteCa3Si2O7Mon. 2/m : P21/b
14.5.5KilchoaniteCa6(SiO4)(Si3O10)Orth.
14.5.6LarniteCa2SiO4Mon.
14.5.7BredigiteCa7Mg(SiO4)4Orth.
14.5.8HatruriteCa3(SiO4)OTrig.
14.5.9RosenhahniteHCa3[Si3O9(OH)]Tric.
14.5.10DellaiteCa6Si3O11(OH)2Tric.
14.5.11AfwilliteCa3(HSiO4)2 · 2H2OMon. m : Bb
14.5.12XonotliteCa6(Si6O17)(OH)2Mon. 2/m
14.5.13FoshagiteCa4(Si3O9)(OH)2Tric.
14.5.14HillebranditeCa2(SiO3)(OH)2Orth. mmm (2/m 2/m 2/m) : Cmcm
14.5.15JaffeiteCa6(Si2O7)(OH)6Trig. 3 : P3
14.5.16SuoluniteCa2(H2Si2O7) · H2OOrth.
14.5.17KillalaiteCa6.4(H0.6Si2O7)2(OH)2Mon.
14.5.18OkeniteCa10Si18O46 · 18H2OTric. 1 : P1
14.5.19RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
14.5.20TrabzoniteCa4(Si3O9)(OH)2Orth. mm2 : Ama2
14.5.21GyroliteNaCa16Si23AlO60(OH)8 · 14H2OTric.
14.5.22FoshallasiteCa3[Si2O7] · 3H2O(?)
14.5.23Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.
14.5.25NekoiteCa3Si6O15·7H2OTric. 1 : P1
14.5.26Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
14.5.27JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.

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.

References for ClinotobermoriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
New Minerals (1997), New Minerals 1990-1994.
Henmi, C., & Kusachi, I. (1992). Clinotobermorite, Ca5Si6 (O, OH) 18.5 H2O, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 56(3), 353-358. http://rruff.info/rruff_1.0/uploads/MM56_353.pdf
Jambor J L, Burke E A J, Grew E S, Puziewicz J (1993) New mineral names. American Mineralogist 78, 672-678 http://rruff.info/rruff_1.0/uploads/AM78_672.pdf
Hoffmann, C. & Armbruster, T. (1997): Clinotobermorite, Ca5[Si3O8(OH)]2.4H2O - Ca5[Si6O17].5H2O, a natural C-S-H(I) type cement mineral. Determination of the substructure. Zeitschrift für Kristallographie 212, 864-873.
Merlino S, Bonaccorsi E (2008) Double wollastonite chains: topological/conformational varieties, polytypic forms, isotypic compounds. Zeitschrift für Kristallographie 223, 85-97
Merlino, S., Bonaccorsi, E., and Armbruster, T. (2001): The real structure of tobermorite-11Å: normal and anomalous forms, OD character and polytypic modifications. European Journal of Mineralogy 13(3), 577-590. http://rruff.info/rruff_1.0/uploads/AM84_1613.pdf
Merlino S, Bonaccorsi E, Armbruster T (1999) Tobermorites: Their real structure and order-disorder (OD) character. American Mineralogist 84, 1613-1621
Biagioni, C., Merlino, S., Bonaccorsi, E. (2015): The tobermorite supergroup: a new nomenclature. Mineralogical Magazine, 79, 485-495
Williams P A, Hatert F, Pasero M, Mills S J (2014) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 21. New minerals and nomenclature modifications approved in 2014. Mineralogical Magazine 78, 797-804 http://rruff.info/rruff_1.0/uploads/MM78_797.pdf

Internet Links for ClinotobermoriteHide

Localities for ClinotobermoriteHide

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

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Italy
 
  • Veneto
    • Vicenza Province
      • Cornedo Vicentino
        • Spagnago
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183; Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011): Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni. Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
      • Gambellara
        • S. Marco hill
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
      • San Vito di Leguzzano-Schio
Boscardin M., Daleffe A., Rocchetti I., Zordan A. “I minerali nel Vicentino”, Museo “G. Zannato”, Montecchio Maggiore (Vicenza), 2011.
Japan (TL)
 
  • Honshu Island
    • Chugoku Region
      • Okayama Prefecture
        • Takahashi City
          • Bicchu-cho (Bitchu-cho)
            • Fuka
Henmi, C., & Kusachi, I. (1992). Clinotobermorite, Ca5Si6(O,OH)18.5H2O, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 56, 353-358.
Russia
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Asbest
Belakovskiy D.I. (2003): New acquisitions of the Fersman Mineralogical Museum Russian Academy of Science (1997-2001). New Data on Minerals, 38, 101-112.
South Africa
 
  • Northern Cape Province
    • Kalahari manganese field
      • Hotazel
Biagioni, C., Bonaccorsi, E., Lezzerini, M., Merlini, M., & Merlino, S. (2012). Thermal behaviour of tobermorite from N’Chwaning II mine (Kalahari Manganese Field, Republic of South Africa). I. Thermo-gravimetric and X-ray diffraction studies. European Journal of Mineralogy, 24(6), 981-989.
Mineral and/or Locality  
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