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JEOL-8600 microprobe database (CU Boulder) | Print date: 08/07/2020 (17:48)

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Standard - Information

In use Fayalite (Fayalite) Block: B
First entry: 10/08/2012 || Last update: 11/02/2012 by Julien Allaz
Mineral class
Sub-class
Group
silicate
Nesosilicate
Olivine
Synthetic? no
Formula
Standard element(s)
Fe2SiO4
Fe Si
Source / reference Smithsonian Institute; USNM 85276
Origin, rock type... Rockport, MA
General comment Possible impurity: grunerite (amphibole)

Analysis 1
Analysis type average
Comment analysis Chemical analysis from Jarosewich et al. (1980);
- Total Fe = 67.55
- Fe2+ = 66.36; Fe3+ = 1.32
- Value in database from cation normalization
Wt-% oxideWt-% elementAtom [p.f.u.]
29.220
0.040
1.305
66.376
2.140
0.100
SiO2
TiO2
Fe2O3
FeO
MnO
H2O
13.658
0.024
0.913
51.595
1.657
0.011
31.192
Si
Ti
Fe3+
Fe2+
Mn
H
O
0.994
0.001
0.033
1.888
0.062
0.023
4.000
99.18199.0507.001

BSE image of Fayalite (Block B).



EDS spectrum in Fayalite at 15 kV.


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Webmaster (Julien Allaz): julien.allaz@colorado.edu | Lab manager (Julien Allaz, Kevin Mahan): julien.allaz@colorado.edu

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