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Thanks. I should have used #geology perhaps instead of science - next time, can't now change it as the first tag.

Yes, that is a little frustrating, and even moreso that none of the other tags can be changed later, after the post pays-out. There are several such changes I'd like to make!

So many good tags could be used for these posts: #geology #rocks #stones #minerals #science as well as the names #quartz #calcite #kyanite and so forth! Wish we could use more than five!