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Round robin tests XRF-analysis XRF Round-robin test GeoPT20 - OPY-1, fine grained ultramafic rock

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT20
Material of proficiency test:
OPY-1, fine grained ultramafic rock
Study finished:
2007 - 2
Literature:
Preliminary Report - GeoPT20 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O0,1100,1100,022
MgO21,10021,4300,270
Al₂O₃8,1207,9500,116
SiO₂44,30044,0500,498
P₂O50,026  
K₂O0,050  
CaO7,7907,9000,115
TiO₂0,3870,3800,009
Fe₂O₃ tot11,86011,8400,163
MnO0,1760,1800,005

trace elements [µg/g]

CRBRV1sRVZ-Score
Co84,0086,503,50
Cr2357,002421,0060,00
Cu53,0044,002,00
Ga10,009,010,50
Ni568,00871,0025,00
Rb3,001,040,08
Sr14,0015,990,80
V181,00168,006,21
Y10,009,400,50
Zn56,0061,802,70
Zr16,0016,900,90

Legend

CRB
results CRB
cooperative test
results collaborative study
1s-RV
Standard deviation collaborative study
Z-Score
Difference of measured value from mean study
*
Value not certified

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