Relichunter2016 638 Posted January 16 Anyone know of any reputable mineral prep services in California who cleaning of specimens ? The only one i know of is collectors edge in Colorado... Quote Share this post Link to post Share on other sites
Morlock 1,272 Posted January 16 Not that I could recommend anyone but what have you got? Gold in quartz or something else? Quote Share this post Link to post Share on other sites
GeoJack 702 Posted January 16 Not sure if Crystalle in Laguna Beach does or not. 1 Quote Share this post Link to post Share on other sites
GeoJack 702 Posted January 16 What about the Mockingbird Mine people? They put out some nice specimens. Quote Share this post Link to post Share on other sites
Relichunter2016 638 Posted January 16 1 hour ago, GeoJack said: What about the Mockingbird Mine people? They put out some nice specimens. Good point, didn't think of that....think Wayne and Donna down in Laguna source it out...but not sure..may give them a buzz. Quote Share this post Link to post Share on other sites
GeoJack 702 Posted January 20 I used a local source on some of my first specimens but stopped after I had to ask for the gold that dropped out of the rock during the HF bath. "Oh, you wanted that gold as well?". Uh, yeah, that 3 grams would be nice to have. Also, used tongs on the specimen as it was retrieved from the solution, knocking even more gold from the piece. 2 1 Quote Share this post Link to post Share on other sites
GeoJack 702 Posted January 24 Sierra Chemicals has the fluids, I'm going down to get some more 35% hydrogen peroxide that I used to "boil" off the calcite on specimens. Quote Share this post Link to post Share on other sites
Morlock 1,272 Posted January 24 Not that I want any but can you obtain hydrofluoric acid these days and if so...how much does it cost?? Quote Share this post Link to post Share on other sites
Morlock 1,272 Posted January 24 (edited) On 1/20/2019 at 12:26 PM, GeoJack said: I used a local source on some of my first specimens but stopped after I had to ask for the gold that dropped out of the rock during the HF bath. "Oh, you wanted that gold as well?". Uh, yeah, that 3 grams would be nice to have. Also, used tongs on the specimen as it was retrieved from the solution, knocking even more gold from the piece. You can use Teflon tape to wrap or tie the specimens for dunking in the hfl acid. Teflon is impervious to hfl acid. Could also weave a specimen "basket" with using Teflon tape. Edited January 24 by Morlock Quote Share this post Link to post Share on other sites
