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Kenotobermorite

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Formula:
[Ca4Si6O15(OH)2·2H2O]·3H2O
Name:
Its relation to tobermorite. The prefix keno indicates the Ca-free nature of the structural cavities of this member of the tobermorite group.
Tobermorite has been redefined by IMA in 2014 as two minerals: tobermorite and kenotobermorite.

Form a continuous solid solution with tobermorite.
Two known natural polytypes are known: Kenotobermorite-4O and Kenotobermorite-2M.


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Classification of KenotobermoriteHide

Approved
Approval Year:
2014

Chemical Properties of KenotobermoriteHide

Formula:
[Ca4Si6O15(OH)2·2H2O]·3H2O
IMA Formula:
Ca4Si6O15(OH)2 · 5H2O

Type Occurrence of KenotobermoriteHide

Place of Conservation of Type Material:
In the mineralogical collection of the Museo di Storia Naturale, Universita` di Pisa, catalogue number 19691.

Relationship of Kenotobermorite to other SpeciesHide

Other Members of this group:
Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.

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 KenotobermoriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Merlino S, Bonaccorsi E, Armbruster T (2001) The real structure of tobermorite 11Å: normal and anomalous forms, OD character and polytypic modification. European Journal of Mineralogy 13, 577-590 [as an 'anomalous' tobermorite; tobermorite-11Å]
Nomenclature proposal approved in june 2014. CNMNC Newsletter No. 21, August 2014,Mineralogical Magazine, 78, 797-804.
Biagioni, C., Merlino, S., Bonaccorsi, E. (2015): The tobermorite supergroup: a new nomenclature. Mineralogical Magazine, 79, 485-495

Internet Links for KenotobermoriteHide

Localities for KenotobermoriteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Asbest
[Kenotobermorite-2M] Merlino S, Bonaccorsi E, Armbruster T (2001) The real structure of tobermorite 11Å: normal and anomalous forms, OD character and polytypic modification. European Journal of Mineralogy 13, 577-590
South Africa (TL)
 
  • Northern Cape Province
    • Kalahari manganese field
      • Kuruman
        • N'Chwaning Mines
Merlino S, Bonaccorsi E, Armbruster T (2001) The real structure of tobermorite 11Å: normal and anomalous forms, OD character and polytypic modification. European Journal of Mineralogy 13, 577-590 ; Biagioni, C., Merlino, S., Bonaccorsi, E. (2015): The tobermorite supergroup: a new nomenclature. Mineralogical Magazine, 79, 485-495
Mineral and/or Locality  
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