This is a record of updates for RockJock5. These corrections have been made in the file currently posted here. 12/12/05 RkJock5.xls and RkMan5.pdf posted at ftp site. RkJock4.xls and RkMan4.pdf removed. 12/15/05 RkMan5.pdf corrected. Page 18, cells listed in item #6 changed to read O2:O3002 rather than S2:S3002. 12/18/05 RkMan5.pdf corrected. On page 18, item #6, changed "...smoothed, shifted..." to read "...smoothed, manually shifted..." RkMan5.pdf corrected. On page 17, correct angle for ZnO 110 reflection maximum is 56.64, not 56.60. RockMan5.pdf addition. On page 26: The McCrone grinding vials can be prevented from leaking by cutting a Viton rubber disk to fit inside the upper screw cap. 12/22/05 RockMan5.pdf addition. Additional instructions added to clarify installation of the program, especially to get the Solver to run. 12/27/05 RkJock5.xls correction made to cell M88 in Input sheet so that normalized results appear properly in Auto Results sheet. 12/28/05 RockMan5 addition. Be sure to COPY and PASTE data rather than CUT and PASTE data. CUT and PASTE may change references in related cells. 12/30/05 RockMan5 additions to the Useful Tips section on page 27: The program sometimes crashes, especially when run under the Xp system. It rarely, if ever, crashes during a calculation, but too often crashes when the contents of a cell are changed. If this happens, do not try to recover the program, because a cell that directs the Solver has been corrupted. Simultaneously type the CONTROL-ALT-DELETE keys to interrupt the saving process, click the END TASK button, and restart the RkJock5.xls program. It may be best to turn on the Auto Background correction (enter 1 in cell B16 of the Input sheet) for all analyses (except when entering new standards), because this option will correct for differences in iron content, and therefore for differences in background due to iron fluorescence, between standards and sample. RkJock5.xls: corrected cell AM311 in the Input sheet so that normalized results are presented in Auto Results sheet. 2/8/06 RkJock5.xls: the MIF for aragonite was corrected in the Standards sheet. 2/13/06 RkJock5.xls: Corrected equations in cells BA9:BB9 in the Results sheet for calculating MIFs for impure standards. RockMan5.pdf: Corrected description of equation to calculate MIFs for impure standards on page 21. 3/6/06 RkJock5.xls: New version of program posted, with refined MIFs and new features, such as ability to choose convergence value and ZnO/sample ratio on Input sheet. RkMan5.xls: Manual modified to reflect new features of program. 3/8/06 RkJock5.xls: Minor pasting errors corrected. 4/24/06 RkJock5.xls: Small error corrected in option 4, standardless analysis. 8/31/06 RockMan5.pdf: Corrected some cell references, and updated references to ZnO sample ratio and Solver convergence values.