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Round robin tests XRF-analysis XRF Round-robin test GeoPT19 - MGR-N, Gabbro

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT19
Material of proficiency test:
MGR-N, Gabbro
Study finished:
2006 - 8
Literature:
Preliminary Report - GeoPT19 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O1,3101,3400,026
MgO4,6204,6800,074
Al₂O₃22,25022,2500,279
SiO₂43,00043,2900,491
P₂O50,043    
K₂O0,090  
CaO15,50015,2900,203
TiO₂0,9770,9600,019
Fe₂O₃ tot11,06010,7600,151
MnO0,1060,1000,003
L.O.I.0,770 

trace elements [µg/g]

CRBRV1sRVZ-Score
As1,301,750,13
Ba68,0053,462,35
Ce10,003,420,23
Co38,0035,30165,00
Cr49,0039,801,83
Cu590,00594,0018,20
Ga21,0019,201,00
Hf0,400,340,03
Nd8,002,700,18
Ni20,0019,701,00
Rb3,00  
Sr2,800,750,06
Th792,00787,0023,10
V439,00453,0014,40
Y6,004,400,28
Zn88,0093,303,80
Zr7,0010,000,57

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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