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Information on Standards and Reference Materials (S-RM)

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Green Cr. / Aston Alm (silicate) - ID

First entry: 01/02/16 || Status: pendingOK

General information
Mineral class
   Sub-class
   Group
   Species 		Silicate
   Nesosilicate
   Garnet
   Almandine
Synthetic? no
Formula
Standard element(s) 		(Fe,Mg,Ca,Mn)3 Al2 Si3O12
Si Al Fe O
Origin, rock type... Green's Creek, Aston Township, PA

EDS spectrum & images

No images found...

Available analysis/-es

(*) Recommended analysis.

Analysis 1
ReferenceMcGuire et al. (1992) Am. Min. 77, p. 1087-1091
MethodXRF, Mössbauer, FNAA
Analysis typeaverage
Analysis commentComposite analysis, XRF for cations, Mössbauer for Fe2+/Fe3+ and Fast Neutron Activation Analysis for oxygen. Oxygen calculated = 41.87%, FeO total = 26.515%
Wt-% oxideWt-% elementAtomic
38.401
0.050
22.504
0.044
1.187
25.447
8.341
2.182
1.735
0.121		SiO2
TiO2
Al2O3
Cr2O3
Fe2O3
FeO
MgO
MnO
CaO
Na2O		17.950
0.030
11.910
0.030
0.830
19.780
5.030
1.690
1.240
0.090
41.432		Si
Ti
Al
Cr
Fe3+
Fe2+
Mg
Mn
Ca
Na
O		2.962
0.003
2.046
0.003
0.069
1.641
0.959
0.143
0.143
0.018
12.000
100.012100.01219.987

Comments

Used for O standardization.

References

  • Harvard Mineralogical Museum
  • McGuire et al. (1992), Am. Min. 77, 1087-1091

Providers and purchase options

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