UM2011-20-SiO:AlFeMg
Valid as an unnamed mineral
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Formula:
Na0.06Ca0.02Mg0.71Fe0.20Al0.11Si0.94O3
may also be given as (Mg,Fe,Si,Al,◻)2SiO4
Specific Gravity:
3.23 (Calculated)
Crystal System:
Orthorhombic
Olivine group (metastable) structure but enstatite stoichiometry.
Found in shock-induced melt veins as acicular nanocrystals (up to 400 and 40 nm in length and width, respectively) that reside within a glassy matrix.
Derived from rapid quenching. Suggested to occur in trace amounts within deep upper mantle olivines.
Note: although bridgmanite may also incorporate Na, its unit cell parameters differ. Also, bridgmanite is not enriched in Al but has some Mn instead.
Found in shock-induced melt veins as acicular nanocrystals (up to 400 and 40 nm in length and width, respectively) that reside within a glassy matrix.
Derived from rapid quenching. Suggested to occur in trace amounts within deep upper mantle olivines.
Note: although bridgmanite may also incorporate Na, its unit cell parameters differ. Also, bridgmanite is not enriched in Al but has some Mn instead.
Unique Identifiers
Mindat ID:
52613
Long-form identifier:
mindat:1:1:52613:3
GUID
(UUID V4):
(UUID V4):
0eca3a95-6527-43c0-99cd-a5bdf6db28e3
Classification of UM2011-20-SiO:AlFeMg
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM2011-20-SiO:AlFeMg
Density:
3.23 g/cm3 (Calculated)
Chemical Properties of UM2011-20-SiO:AlFeMg
Formula:
Na0.06Ca0.02Mg0.71Fe0.20Al0.11Si0.94O3
may also be given as (Mg,Fe,Si,Al,◻)2SiO4
may also be given as (Mg,Fe,Si,Al,◻)2SiO4
Crystallography of UM2011-20-SiO:AlFeMg
Crystal System:
Orthorhombic
Cell Parameters:
a = 4.78 Å, b = 10.11-10.27 Å, c = 5.94 Å
Ratio:
a:b:c = 0.473 : 1 : 0.588
Unit Cell V:
287.06 ų (Calculated from Unit Cell)
Comment:
from SAED and SXMD
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.
References for UM2011-20-SiO:AlFeMg
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Xie, Z., Sharp, T.G., Leinenweber, K., DeCarli, P.S., Dera, P. (2011): A new mineral with an olivine structure and pyroxene composition in the shock-induced
melt veins of Tenham L6 chondrite. American Mineralogist: 96: 430-436
Smith, D.G.W., Nickel, E.H. (2012): 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 UM2011-20-SiO:AlFeMg
mindat.org URL:
https://www.mindat.org/min-52613.html
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Localities for UM2011-20-SiO:AlFeMg
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
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? - 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.
Australia | |
| Xie, Z., Sharp, T.G., Leinenweber, K., DeCarli, P.S., Dera, P. (2011): A new mineral with an olivine structure and pyroxene composition in the shock-induced melt veins of Tenham L6 chondrite. American Mineralogist: 96: 430-436 |
