Photo Part of these minerals. look like slag. Was told the green material was volcanic glass attached to steel? Help

I'm no expert but I do a lot of rock cutting, trimming etc. The problem with cutting is the heat transferred to the stone. It changes the physical characteristics most stones. I flintknap arrowheads and when I slab obsidian its harder to flake.

I spoke with a chemist about the chalcedany and calcium carbonate film on botryoidal fluorite. He suggested using phosphoric acid then going to the other end by using hydrogen peroxide. I never tried it. I use Rust Remover by Whink. Its a low amount of Hydrofluoric acid.(2%). Im very cautious non ...

The Blm Adjudicator has already ok'd my intent to file Placer claim over the existing lode claim. She has the final say whether the application is approved. I'm sure the lode claimant will dispute my claim, because I know him personally and know that he can get belligerent. If he has a problem he ...

You can file a Colluvial Placer Claim on top of a lode claim. CFR Statutes state that any rocks moved from their original location may be mined under the Placer Claim. This includes tailings. You are not however, allowed to remove anything from the lode source. You can take into account, in my ...

This is a piece of botryoidal fluorite from Colorado. The white film is a combination if Chalcedony and Calcium Carbonate. We have tried Sulfuric acid, Hydrochloric acid(35.8% diluted 10 to 1), Sulfamic acid,I have a product by Whink. Its a rust stain remover which is 1.5 to 3.5% hydrofluoric acid, ...