UM2004-47-SiO:AlCaNa
Valid as an unnamed mineral
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Formula:
(Na,Ca)(Si,Al)6O11
also given as (CaxNa1–x)Al3+xSi3–xO11
A Martian mineral, found in few meteorites.
Occurs as intergrowths with stishovite, and may also be intergrown with Al-bearing silicate with the hollandite structure (this is most likely lingunite)
Genesis: pockets of shock melt of plagioclase composition.
The Ca-dominant end member was synthesized (at HP; has barioferrite-type structure). This member is possibly now also known as a mineral: donwilhelmsite.
EMPA data [wt.%]:
Na2O 6.96
K2O 0.53
CaO 4.4
MgO 0.05
FeO 0.13
Al2O3 47.88
SiO2 40.05
total 100
This corresponds to (Na0.83Ca0.29K<0.04)Al2.91Si2.95O11.
Occurs as intergrowths with stishovite, and may also be intergrown with Al-bearing silicate with the hollandite structure (this is most likely lingunite)
Genesis: pockets of shock melt of plagioclase composition.
The Ca-dominant end member was synthesized (at HP; has barioferrite-type structure). This member is possibly now also known as a mineral: donwilhelmsite.
EMPA data [wt.%]:
Na2O 6.96
K2O 0.53
CaO 4.4
MgO 0.05
FeO 0.13
Al2O3 47.88
SiO2 40.05
total 100
This corresponds to (Na0.83Ca0.29K<0.04)Al2.91Si2.95O11.
Unique Identifiers
Mindat ID:
54503
Long-form identifier:
mindat:1:1:54503:1
Similar Names
| UM1967-09-SiO:AlHKNa | (K,Na)AlSi2O6 · H2O | |
| UM1976-25-SiO:AlKNa | (K,Na)AlSi5O12 | |
| UM1996-38-SiO:AlCaHNa | Valid as an unnamed mineral | Na-Ca-Al-Si-O-H |
| UM1997-//-SiO:AlCaHNa[1] | Na2CaAl4Si4O16 · nH2O | |
| UM1997-//-SiO:AlCaHNa[2] | Na2Ca4Si4O15(OH)4 | |
| UM1999-33-SiO:AlHKNa | Valid as an unnamed mineral | K7Na5Al12Si20O64 · 24H2O |
IMA Classification of UM2004-47-SiO:AlCaNa
IMA status notes:
Unnamed (probably valid)
Chemistry of UM2004-47-SiO:AlCaNa
Mindat Formula:
(Na,Ca)(Si,Al)6O11
also given as (CaxNa1–x)Al3+xSi3–xO11
also given as (CaxNa1–x)Al3+xSi3–xO11
Element Weights:
Other Information
Notes:
Raman data: spectrum slightly shifted but otherwise well comparable to the Ca-dominant synthetic analogue
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 UM2004-47-SiO:AlCaNa
mindat.org URL:
https://www.mindat.org/min-54503.html
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References for UM2004-47-SiO:AlCaNa
Reference List:
Localities for UM2004-47-SiO:AlCaNa
Showing 2 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Morocco | |
| Beck et al. (2004) +1 other reference |
Nigeria | |
| Beck et al. (2004) +1 other reference |
