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
Similar Names
| UM1983-18-SiO:AlFeHMg | ~(Mg,Fe)Al4Si4O12(OH)8 | |
| UM1991-21-SiO:AlFeHMg | (Fe,Al,Mg)6(Si,Al)4O10(OH)4 · H2O | |
| UM1997-49-SiO:AlFeMg | A synonym of Jeffbenite | Mg3Al2Si3O12 |
| UM1998-//-BOSiO:AlFeMg[2] | (Fe2+,Mg)2Al14Si4B4O37 | |
| UM2002-52-SiO:AlFeMg | Mg4(Mg1.5Fe+20.3Fe+31.6Al8.5)O4[Si1.7Al10.3O36] |
IMA 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)
Chemistry of UM2011-20-SiO:AlFeMg
Mindat 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
Element Weights:
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.
Internet Links for UM2011-20-SiO:AlFeMg
mindat.org URL:
https://www.mindat.org/min-52613.html
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References for UM2011-20-SiO:AlFeMg
Localities for UM2011-20-SiO:AlFeMg
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.
Australia | |
| Xie et al. (2011) |
