Please, wait!

Please, wait...

Script in progress...



If this page is still visible after a couple seconds,
click here to force closing this window,
and report to the webmaster
(under "home > contact > webmaster")
any error you might see in the page...

JEOL-8600 microprobe database (CU Boulder) | Print date: 08/07/2020 (16:57)

feedback

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/geolow5/public_html/jeol/std_info.php on line 5

Standard - Information

In use Magnetite (Magnetite) Block: Bence-Albee
First entry: 04/15/2012 || Last update: 04/19/2012 by Julien Allaz
Mineral class
Sub-class
oxide
Spinel
Synthetic? no
Formula
Standard element(s)
Fe3O4
Fe
Source / reference USNM #114887
Origin, rock type... Minas Gerais, Brazil

    (*) Recommended analysis
    Analysis type unknown
    Wt-% oxideWt-% elementAtom [p.f.u.]
    0.170
    0.260
    67.067
    30.603
    TiO2
    Cr2O3
    Fe2O3
    FeO
    0.102
    0.178
    46.909
    23.788
    25.468
    Ti
    Cr
    Fe3+
    Fe2+
    O
    0.005
    0.008
    1.982
    1.005
    4.000
    98.10096.4457.000
    See analysis 1 for recommended analysis
    Analysis type unknown
    Comment analysis As in Jarosewich et al. (1980), Geostandards Newsletter 4 (2), p. 257.
    MgO, Cr2O3 are preliminary data.
    MnO < 0.01.
    Wt-% oxideWt-% elementAtom [p.f.u.]
    0.160
    0.250
    67.500
    30.200
    0.050
    TiO2
    Cr2O3
    Fe2O3
    FeO
    MgO
    0.096
    0.171
    47.212
    23.475
    0.030
    27.177
    Ti
    Cr
    Fe3+
    Fe2+
    Mg
    O
    0.005
    0.008
    1.991
    0.990
    0.003
    4.000
    98.16098.1616.997

BSE image of magnetite (block BA).



BSE image of Magnetite (Block B).



EDS spectrum in magnetite at 15 kV.



EDS spectrum in Magnetite at 15 kV.


Colorado University at Boulder - EMP facility © 2012
Webmaster (Julien Allaz): julien.allaz@colorado.edu | Lab manager (Julien Allaz, Kevin Mahan): julien.allaz@colorado.edu

Will open in a new page...

Colorado University at Boulder - EMP facility © 2012 | Julien Allaz, Kevin Mahan
Last update: June 2nd, 2013 (copyright) | Contact

Memory usage: 146.3 kb || Page generated in 0.0520 s
Server date (time): Aug 7, 2020 (16:57)