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UM1995-41-SiO:AlSr
Valid as an unnamed mineral
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Formula:
SrAl2Si2O8
Crystal System:
Triclinic
Transforms to the monoclinic (P21/a) polymorph (slawsonite) in course of heating.
Electron microprobe data, wt%: SiO2 36.63, Al2O3 31.30, SrO 29.99, BaO 1.53, K2O 0.06, total 99.51, corresponding to (Sr0.95Ba0.03)Al2.01Si2.00O8.
Electron microprobe data, wt%: SiO2 36.63, Al2O3 31.30, SrO 29.99, BaO 1.53, K2O 0.06, total 99.51, corresponding to (Sr0.95Ba0.03)Al2.01Si2.00O8.
Unique Identifiers
Mindat ID:
53637
Long-form identifier:
mindat:1:1:53637:0
IMA Classification of UM1995-41-SiO:AlSr
IMA status notes:
Unnamed (probably valid)
Chemistry of UM1995-41-SiO:AlSr
Mindat Formula:
SrAl2Si2O8
Element Weights:
Elements listed:
Crystallography of UM1995-41-SiO:AlSr
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.145(1) Å, b = 8.987(2) Å, c = 7.546(3) Å
α = 90.01(3)°, β = 90.34(3)°, γ = 89.98(3)°
α = 90.01(3)°, β = 90.34(3)°, γ = 89.98(3)°
Ratio:
a:b:c = 0.684 : 1 : 0.84
Unit Cell V:
416.72 Ã
Âģ (Calculated from Unit Cell)
Z:
4
Other Information
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 UM1995-41-SiO:AlSr
mindat.org URL:
https://www.mindat.org/min-53637.html
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References for UM1995-41-SiO:AlSr
Reference List:
Tagai, T., Hoshi, T., Suzuki, M., Kato, A., Matsubara, S. (1995) A new modification of slawsonite, SrAl2Si2O8: Its structure and phase transition. Zeitschrift fÞr Kristallographie, 210 (10). doi:10.1524/zkri.1995.210.10.741 in: Jambor, J.L., Pertsev, N.N., Roberts, A.C. (1997): New mineral names. American Mineralogist: 81: 767
Localities for UM1995-41-SiO:AlSr
Showing 1 localities.
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
Japan | |
| Tagai et al. (1995) +1 other reference |
