P AGE 25 Uranium Code 8 Uranium T otal uranium can be determined by delayed neutron counting using an automated system at a nuclear reactor The principle adva ntage of this is to provide very rapid and accurate assays for high volumes of samples at a very low cost The upper limit of this technique is 1 U Res ults can be reported as U or U 3 O 8 From 1 to 10 U 3 O 8 fusion XRF will provide the best quality assay results and above 10 U 3 O 8 titration is recommended for accuracy Acid digestion using both aqua regia and 4 acid near total digestion with ICPMS is also possible but uranium in resistate ph ases zircon monazite etc may not be included in the assays Near T otal digestions may not be total for uranium depending on mineralogy Hydroflouric aci d is used in the digestion and some uranium may be volatilized due to combination with the HF Code 5D U 3 O 8 Assay DNC 01 ppm 1 U 3 O 8 Price 1600 Code 8 U 3 O 8 Aqua Regia by ICPMS Price 1700 Code 8 U 3 O 8 Assay by XRF 0005 10 U 3 O 8 Price 2300 Code 8 U 3 O 8 Near T otal by ICPMS Price 1900 Code 8 U 3 O 8 T itration 10 U 3 O 8 Price 3600 Geochem V U by XRF Pressed Pellet Price 1200 Code 5DPeroxide Boron 2 ppm Price 1400 Exploration T echniques for Specific Deposit T ypes Code ICPMS1 Sandstone and Basement Exploration Package Price 6200 Three separate analyses will be performed in this package ICPMS analysis on the partial digestion ICPOES analysis for major and minor elements on the total digestion ICPMS analysis for trace elements on the total digestion Element Detection Limit Element Detection Limit Element Detection Limit As 001 ppm Hf 001 ppm Se 01 ppm Ag 001 ppm Hg 001 ppm Sm 001 ppm Sb 001 ppm Ho 001 ppm Sn 001 ppm Be 001 ppm Mo 001 ppm T a 001 ppm Bi 001 ppm Nb 001 ppm Tb 001 ppm Cd 001 ppm Nd 001 ppm T e 001 ppm Co 001 ppm Ni 001 ppm Th 001 ppm Cs 001 ppm Pb 002 ppm U 001 ppm Cu 001 ppm Pb 204 001 ppm V 01 ppm Dy 001 ppm Pb 206 002 ppm W 01 ppm Er 001 ppm Pb 207 002 ppm Y 001 ppm Eu 001 ppm Pb 208 002 ppm Yb 001 ppm Ga 001 ppm Pr 001 ppm Zn 01 ppm Gd 001 ppm Rb 001 ppm Zr 001 ppm Ge 001 ppm Sc 01 ppm Equilibium Studies The most abundant naturally occurring radioactive elements are potassium K uranium U and thorium Th K eU and eTh are determined by gamma spectrometry from daughter products of the uranium and thorium series The method assumes that the decay series are in radioac tive equilibrium The samples are sealed and stored for a minimum of 28 days before analysis When total U Th and K are determined it is possible to deter mine if the samples are in equilibrium with their natural environment or if components have been leached out The equilibrium studies are critical when u sing gamma bore hole logging techniques to avoid overestimating or underestimating resources Pricing upon request Element Detection Limit Ag 002 ppm Al 2 O 3 001 Ba 1 ppm Be 01 ppm Bi 01 ppm CaO 001 Cd 01 ppm Ce 01 ppm Cs 01 ppm Cr 1 ppm Co 002 ppm Cu 01 ppm Dy 002 ppm Er 002 ppm Element Detection Limit Eu 002 ppm Fe 2 O 3 001 Gd 01 ppm Ga 01 ppm Hf 01 ppm Ho 002 ppm K 2 O 0002 La 1 ppm Li 1 ppm MgO 0001 MnO 0001 Mo 002 ppm Na 2 O 001 Nb 01 ppm Element Detection Limit Nd 01 ppm Ni 01 ppm P 2 O 5 0002 Pb 002 ppm Pb 204 001 ppm Pb 206 002 ppm Pb 207 002 ppm Pb 208 002 ppm Pr 01 ppm Rb 01 ppm Sc 01 ppm Sm 01 ppm Sn 002 ppm Sr 1 ppm Element Detection Limit T a 01 ppm Tb 002 ppm Th 002 ppm Ti O 2 0001 W 01 ppm U 002 ppm V 01 ppm Yb 002 ppm Y 01 ppm Zn 1 ppm Zr 1 ppm Partial Digestion T otal Digestion Analysis carried out by ICPOES All other elements analyzed by ICPMS Depending on mineralogy some U may be volatilized as total digestion uses HF and some U may form UF6 which is volatile