Today I have an outside user, who is looking at some metamorphosed iron formation sample. The user had done some optical work and assumed this was some stilpnomelane...but when she probed it, it came out atomically Al:Si:O 1:1:5...and we couldn't recall what mineral this was. So I wanted to use the MATCH button in PfE...but it was greyed out! I came to the forum and found nothing there to help, though in this topic John showed some screen shots but not exactly related to using MATCH for a quant analysis, and in the screen shot the MATCH button was also greyed out....what to do...punt, I retried the Analyze button one more time and now the MATCH button came active...we picked DHZ and after 10 seconds out spit the list of possible matches, with kaolinite having the lowest difference ("vector") factor. Cool! Now we are looking for another match....not kaolinite in dhz or dana, trying american mineralogist...but there are 8274 possible matchs! John, is there some way to enter in a guessed at mineral? so it first goes to that mineral composition? Would save a lot of time waiting...we re now at 2000 out of 8274, after a minute... we think THIS analysis's stilpnomelane but have to wait 4-5 minutes to see if this is it....