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JEOL-8600 microprobe database (CU Boulder) | Print date: 09/22/2021 (00:38)

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Standard - Information

In use Johnstown Hypersthene (Hypersthene) Block: #4
First entry: 04/15/2012 || Last update: 04/19/2012 by Julien Allaz
Mineral class
Sub-class
Group
silicate
Inosilicate single chain
Orthopyroxene
Synthetic? no
Formula
Standard element(s)
(Mg,Fe)2Si2O6
Si Fe Mg
Source / reference USNM #746
Origin, rock type... Johnstown meteorite
General comment See Jarosewich et al. (1980), Geostandards Newsletter 4 (2), p. 257

Analysis 1
Analysis type unknown
Comment analysis Na2O < 0.05
K2O < 0.05
Wt-% oxideWt-% elementAtom [p.f.u.]
54.090
0.160
1.230
0.750
15.220
26.790
0.490
1.520
SiO2
TiO2
Al2O3
Cr2O3
FeO
MgO
MnO
CaO
25.284
0.096
0.651
0.513
11.831
16.155
0.379
1.086
44.255
Si
Ti
Al
Cr
Fe2+
Mg
Mn
Ca
O
1.953
0.004
0.052
0.021
0.460
1.442
0.015
0.059
6.000
100.250100.25010.006

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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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Last update: June 2nd, 2013 (copyright) | Contact

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