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UM1983-24-SiO:CaNa

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About UM1983-24-SiO:CaNaHide

Formula:
Na2Ca2Si3O9
Specific Gravity:
2.85 (Calculated)
Crystal System:
Trigonal
Dimorph of:
Low-temperature form corresponding to the synthetic Na2Ca2Si3O9 phase which composition varies from Na1.7Ca2.15Si3O9 to Na3.2Ca1.4Si3O9.


Physical Properties of UM1983-24-SiO:CaNaHide

Density:
2.85 g/cm3 (Calculated)

Chemical Properties of UM1983-24-SiO:CaNaHide

Formula:
Na2Ca2Si3O9

Crystallography of UM1983-24-SiO:CaNaHide

Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Cell Parameters:
a = 10.464(2) Å, c = 13.176(3) Å
Ratio:
a:c = 1 : 1.259
Unit Cell V:
1,249.42 ų (Calculated from Unit Cell)
Z:
6
Comment:
P31 or P32

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 UM1983-24-SiO:CaNaHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Fischer, R.X., Tillmanns, E. (1983): The crystal structures of natural Na2Ca2Si3O9 from Mt. Shaheru (Zaire) and from the Mayener Feld (Eifel). Neues Jahrbuch für Mineralogie - Monatshefte: 49-59 (in German); in: Dunn, P.J., Grice, J.D., Fleischer, M., Pabst, A. (1984): New mineral names. American Mineralogist: 69: 214
Smith, D.G.W., Nickel, E.H. (2007): A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. Canadian Mineralogist: 45: 983-1055; http://nrmima.nrm.se (2016)

Internet Links for UM1983-24-SiO:CaNaHide

Localities for UM1983-24-SiO:CaNaHide

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.
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Mayen
        • Bellerberg volcano
          • Southern lava flow
            • Mayener Feld
Fischer, R.X., Tillmanns, E. (1983): The crystal structures of natural Na2Ca2Si3O9 from Mt. Shaheru (Zaire) and from the Mayener Feld (Eifel). Neues Jahrbuch für Mineralogie - Monatshefte: 49-59 (in German); in: Dunn, P.J., Grice, J.D., Fleischer, M., Pabst, A. (1984): New mineral names. American Mineralogist: 69: 214
 
Mineral and/or Locality  
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