Table 1.

Representative electron probe micro-analysis of lazulite

MineralLazulite
SiO20.020.090.050.060.060.010.070.080.070.050.000.060.050.040.030.07
Al2O332.2431.8932.1432.2732.0331.7931.6632.2932.2332.5632.5732.0932.2731.7731.7130.84
FeO2.733.072.963.113.112.803.173.012.973.082.392.843.002.963.132.72
MgO11.1411.2511.3011.3511.0811.2311.1311.3210.8111.2711.1711.0711.2410.7110.9111.46
MnO0.000.000.030.000.050.010.030.030.050.100.000.020.060.000.020.00
CaO0.000.030.000.000.000.000.030.000.030.000.000.010.020.000.000.03
K2O0.000.000.030.010.000.020.040.000.010.010.020.020.000.000.000.00
Na2O0.000.000.000.000.010.000.000.000.000.000.000.000.010.000.000.00
TiO20.020.070.060.090.060.060.040.130.070.030.000.030.100.030.030.12
P2O546.6147.1846.6746.0946.2246.8546.4445.5145.8645.8646.6646.6046.6647.7647.0047.08
Cr2O30.000.020.000.020.040.000.020.000.110.000.000.000.000.000.000.02
Total92.7793.5993.2593.0092.6592.7892.6292.3792.2192.9692.8192.7593.4193.2792.8592.35
CationsCations calculated on 9 Oxygen basis
Si0.0010.0050.0030.0030.0030.0010.0040.0040.0040.0030.0000.0030.0030.0020.0020.004
Al1.9591.9241.9471.9631.9551.9321.9331.9781.9771.9831.9751.9521.9521.9171.9281.882
Fe0.1180.1310.1270.1340.1350.1210.1370.1310.1290.1330.1030.1230.1290.1270.1350.118
Mg0.8560.8580.8650.8730.8550.8630.8590.8770.8380.8680.8560.8510.8600.8170.8390.884
Mn0.0000.0000.0010.0000.0020.0000.0010.0010.0020.0040.0000.0010.0030.0000.0010.000
Ca0.0000.0020.0000.0000.0000.0000.0020.0000.0020.0000.0000.0010.0010.0000.0000.002
K0.0000.0000.0020.0010.0000.0010.0030.0000.0010.0010.0010.0010.0000.0000.0000.000
Na0.0000.0000.0000.0000.0010.0000.0000.0000.0000.0000.0000.0000.0010.0000.0000.000
Ti0.0010.0030.0020.0040.0020.0020.0020.0050.0030.0010.0000.0010.0040.0010.0010.005
P2.0342.0442.0302.0142.0262.0452.0362.0022.0202.0052.0312.0352.0272.0702.0512.063
Cr0.0000.0010.0000.0010.0020.0000.0010.0000.0050.0000.0000.0000.0000.0000.0000.001
Mg/Mg+Fe0.880.870.870.870.860.880.860.870.870.870.890.870.870.870.860.88
Fe/Fe+Mg0.120.130.130.130.140.120.140.130.130.130.110.130.130.130.140.12
Mg/Mg+Fe+Al0.290.290.290.290.290.300.290.290.290.290.290.290.290.290.290.31
Fe/Fe+Mg+Al0.040.050.040.050.050.040.050.040.040.050.040.040.040.040.050.04