I've been looking for a source of Nitric Acid for MONTHS, no
place near here (chemical supply businesses, etc) has any. I need
just a small amount to etch iron meteorite slices for my collection
and jewelry work.
Try checking with your local college chemistry dept. to see where
they get their nitric acid, or try Bryant Labs, since they sell small
amounts of chemicals to 'smiths. But, if they're iron based
meteorites, will ferric chloride work? It might be worth some
experimentation on a piece you can't use anyway, and it's a lot safer
to use, cheaper and easier to get.