> This often frustrates students who think just because I am a > "mineralogist" I can sight-ID all 4,000+ species. Upon seeing a rather > bland and indistinct assemblage thrust in front of me and being asked > "what is this?", my first response is usually "It's a rock." [Axel] How on earth did you pass that exam ????? LOL Good maxim, btw. Cheers Axel