The latest version of CalcImage (v. 10.1.8, 12/15/2013), nicely now handles oxides and excess oxygen output to Surfer.
See attached example of Magnetite analysis using polygon extraction to avoid an inclusion.
And also an example of an oxide element by difference, although the Ce2O3 in this monazite composition is just there for the general matrix correction and assumes no Nd, Sm, etc in the composition. This assumption has been tested and surprisingly, does work well for the U, Th, Pb, Y and La matrix corrections as seen here in some point analyses:
Un 8 Allaz-3
TakeOff = 40.0 KiloVolt = 15.0 Beam Current = 50.0 Beam Size = 5
(Magnification (analytical) = 40000), Beam Mode = Analog Spot
(Magnification (default) = 400, Magnification (imaging) = 800)
Image Shift (X,Y): .00, .00
Number of Data Lines: 9 Number of 'Good' Data Lines: 9
First/Last Date-Time: 10/30/2013 12:04:35 PM to 10/30/2013 01:02:35 PM
WARNING- Using Exponential Off-Peak correction for th ma
Average Total Oxygen: 27.194 Average Total Weight%: 100.000
Average Calculated Oxygen: 27.194 Average Atomic Number: 39.773
Average Excess Oxygen: .000 Average Atomic Weight: 39.299
Average ZAF Iteration: 11.00 Average Quant Iterate: 3.00
Oxygen Calculated by Cation Stoichiometry and Included in the Matrix Correction
Element Ce is Calculated by Difference from 100%
Element P is Calculated .25 Atoms Relative To 1.0 Atom of Oxygen
Un 8 Allaz-3, Results in Elemental Weight Percents
ELEM: U Th Pb Y La Ce P O
TYPE: ANAL ANAL ANAL ANAL ANAL DIFF STOI CALC
BGDS: LIN EXP LIN LIN LIN
TIME: 200.00 200.00 200.00 120.00 120.00
BEAM: 49.82 49.82 49.82 49.82 49.82
ELEM: U Th Pb Y La Ce P O SUM
219 .472 3.341 .567 1.826 9.508 43.870 13.179 27.237 100.000
220 .446 3.334 .524 1.638 9.721 43.952 13.169 27.216 100.000
221 .237 3.150 .424 1.054 9.937 44.893 13.142 27.162 100.000
222 .510 3.582 .581 1.695 9.716 43.555 13.161 27.200 100.000
223 .445 3.923 .599 1.587 9.413 43.725 13.144 27.165 100.000
224 .512 3.290 .558 1.789 9.884 43.557 13.177 27.234 100.000
225 .515 3.329 .573 1.865 9.354 43.944 13.180 27.240 100.000
226 .125 4.790 .400 1.349 8.802 44.278 13.126 27.129 100.000
227 .446 3.816 .595 1.555 9.514 43.764 13.145 27.167 100.000
AVER: .412 3.617 .536 1.595 9.539 43.949 13.158 27.194 100.000
SDEV: .137 .509 .074 .257 .342 .418 .019 .040 .000
SERR: .046 .170 .025 .086 .114 .139 .006 .013
%RSD: 33.28 14.08 13.75 16.13 3.59 .95 .15 .15
STDS: 15 18 386 1016 836 0 0 0
STKF: .8725 .8707 .6861 .4480 .6591 .0000 .0000 .0000
STCT: 137.33 44.30 140.31 38.76 33.08 .00 .00 .00
UNKF: .0035 .0302 .0041 .0116 .0829 .0000 .0000 .0000
UNCT: .55 1.54 .84 1.00 4.16 .00 .00 .00
UNBG: .77 .26 .54 .13 .19 .00 .00 .00
ZCOR: 1.1794 1.1961 1.3069 1.3748 1.1510 .0000 .0000 .0000
KRAW: .0040 .0347 .0060 .0259 .1257 .0000 .0000 .0000
PKBG: 1.71 6.87 2.56 8.82 23.27 .00 .00 .00
INT%: -14.77 ---- -2.38 ---- ---- ---- ---- ----
Un 8 Allaz-3, Results in Oxide Weight Percents
ELEM: UO2 ThO2 PbO Y2O3 La2O3 Ce2O3 P2O5 O SUM
219 .536 3.802 .611 2.319 11.151 51.384 30.198 .000 100.000
220 .506 3.794 .564 2.080 11.401 51.480 30.175 .000 100.000
221 .268 3.585 .457 1.339 11.654 52.582 30.115 .000 100.000
222 .578 4.076 .626 2.153 11.395 51.015 30.157 .000 100.000
223 .504 4.464 .645 2.015 11.040 51.214 30.118 .000 100.000
224 .580 3.744 .601 2.272 11.591 51.018 30.194 .000 100.000
225 .584 3.788 .617 2.368 10.970 51.471 30.201 .000 100.000
226 .142 5.451 .431 1.713 10.323 51.863 30.078 .000 100.000
227 .505 4.342 .641 1.974 11.157 51.260 30.120 .000 100.000
AVER: .467 4.116 .577 2.026 11.187 51.476 30.151 .000 100.000
SDEV: .156 .580 .079 .327 .401 .490 .045 .000 .000
SERR: .052 .193 .026 .109 .134 .163 .015 .000
%RSD: 33.28 14.08 13.75 16.13 3.59 .95 .15 375.00
STDS: 15 18 386 1016 836 0 0 0
Un 8 Allaz-3, Results in Millions of Years Ago, EPMA Age (from U, Th, Pb)
U WT% Th WT% Pb WT% U PPM Th PPM Pb PPM Age[My] Calc Pb %Pb(Th) %Pb(U)
219 .472289 3.34109 .567045 4722.89 33410.9 5670.45 2323.00 5670.27 64.3415 35.6635
220 .446398 3.33429 .523589 4463.98 33342.9 5235.90 2208.20 5236.10 65.9074 34.0874
221 .236642 3.15039 .424494 2366.42 31503.9 4244.94 2226.00 4245.02 77.4650 22.5299
222 .509558 3.58221 .581436 5095.58 35822.1 5814.36 2231.20 5814.52 64.4655 35.5293
223 .444676 3.92270 .598909 4446.76 39227.0 5989.09 2258.10 5989.38 69.4054 30.5896
224 .511685 3.28988 .557768 5116.85 32898.8 5577.68 2252.20 5577.78 62.3314 37.6634
225 .515049 3.32893 .572963 5150.49 33289.3 5729.63 2285.30 5729.68 62.3537 37.6412
226 .124814 4.79049 .399875 1248.14 47904.9 3998.75 1650.30 3998.89 91.3724 8.62120
227 .445556 3.81612 .594983 4455.56 38161.2 5949.83 2281.40 5949.84 68.7099 31.2850
AVER: .411852 3.61734 .535674 4118.52 36173.4 5356.74 2190.63 5356.83 69.5947 30.4012
SDEV: .137073 .509306 .073673 1370.73 5093.06 736.728 205.618 736.721 9.41884 9.41990