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JEOL-8600 microprobe database (CU Boulder) | Print date: 08/07/2020 (17:03)

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Standard - Information

In use Anorthite (Anorthite) Block: #4
First entry: 04/15/2012 || Last update: 04/19/2012 by Julien Allaz
Mineral class
Sub-class
Group
silicate
Tectosilicate
Feldspar
Synthetic? no
Formula
Standard element(s)
CaAl2Si2O8
Al Ca
Source / reference USNM #137041
Origin, rock type... Great Sitkin Island, AK
General comment See Jarosewich et al. (1980), Geostandards Newsletter 4 (2), p. 257

Analysis 1
Analysis type unknown
Comment analysis MgO < 0.02
Wt-% oxideWt-% elementAtom [p.f.u.]
44.000
0.030
36.030
0.620
0.020
19.090
0.530
0.030
SiO2
TiO2
Al2O3
FeO
MgO
CaO
Na2O
K2O
20.567
0.018
19.069
0.482
0.012
13.644
0.393
0.025
46.140
Si
Ti
Al
Fe2+
Mg
Ca
Na
K
O
2.031
0.001
1.961
0.024
0.001
0.944
0.047
0.002
8.000
100.350100.35013.011

BSE image of Anorthite (Block B).



EDS spectrum in Anorthite at 15 kV.


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