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UM1983-24-SiO:CaNa

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07604090017602419804239.jpg
UM1983-24-SiO:CaNa, etc.

Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
07604090017602419804239.jpg
UM1983-24-SiO:CaNa, etc.

Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
07604090017602419804239.jpg
UM1983-24-SiO:CaNa, etc.

Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
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About UM1983-24-SiO:CaNaHide

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


Unique IdentifiersHide

Mindat ID:
47747
Long-form identifier:
mindat:1:1:47747:5

Similar NamesHide

UM2003-36-SiO:CaNaValid as an unnamed mineralNaCrSi2O6 - CaMgSi2O6

Physical Properties of UM1983-24-SiO:CaNaHide

Density:
2.85 g/cm3 (Calculated)

Chemistry of UM1983-24-SiO:CaNaHide

Mindat Formula:
Na2Ca2Si3O9
Element Weights:
Element% weight
O40.632 %
Si23.775 %
Ca22.618 %
Na12.974 %

Calculated from ideal end-member formula.
Elements listed:
Ca, Na, O, Si - search for minerals with similar chemistry

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

Common AssociatesHide

Associations Based on Photo Data:
1 photo of UM1983-24-SiO:CaNa associated with WollastoniteCa3(Si3O9)

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 UM1983-24-SiO:CaNaHide

References for UM1983-24-SiO:CaNaHide

Localities for UM1983-24-SiO:CaNaHide

Showing 1 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.
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Mayen
Fischer et al. (1983) +1 other reference
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