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Round robin tests XRF-analysis XRF Round-robin test GeoPT 4 - OU-2, Bamford Dolerite

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT4
Material of proficiency test:
OU-2, Bamford Dolerite
Study finished:
1999 - 4
Literature:
Geostandards Newsletter, Vol. 24, No. 1, 06/00, p. 135

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O2,4802,4800,043
MgO5,5405,5850,086
Al₂O₃13,82013,8010,186
SiO₂51,09051,0950,586
P₂O50,2960,3000,007
SO₃0,030  
K₂O0,9800,9900,020
CaO8,9008,9940,129
TiO₂2,4902,4250,042
Fe₂O₃ tot13,43013,2500,180
MnO0,1730,1700,004

trace elements [µg/g]

CRBRV1sRVZ-Score
Ba342,00341,1011,30
Ce69,0060,202,60
Co44,0044,802,00
Cr104,0097,003,90
Cu56,0063,002,70
Ga23,0023,05115,00
Hf5,105,290,33
La41,0027,701,34
Mo3,003,050,21
Nb21,0017,250,90
Ni60,0051,772,29
Pb14,0013,120,71
Rb28,0025,441,35
Sr427,00403,7013,10
Th3,603,020,20
V344,00339,2011,30
Y35,0030,931,48
Zn114,00113,004,40
Zr223,00200,507,20

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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