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  1. Black Sand Gold Recovery - Part 2 - Gold Fever Prospecting

    Black Sand Gold Recovery ... Add acidic acid "cider vinegar" or Citric acid "stronger" and tumble ... Use you mouth to gently blow the remaining black sands away ...
    www.goldfeverprospecting.com/blsagorepa2.html
  2. Prospectors Paradise - Recreational Gold Prospecting - Acids ...

    Examples of weak acids are acetic, carbonic, citric and ascorbic. Furthermore, acids are ... Dealing with black sand ... acid. Simply take your gold with the black ...
    prospectorsparadise.com/…-blog/acids-and-bases.html
  3. WORKING BLACK SAND and SULFIDES in GOLD RECOVERY

    Hi Seeker - nice post. I've got a question fro you. Would oxalic acid work instead of cider vinegar or citric acid? It seems a shame to waste the cider!
    gpex.ca/smf/index.php?topic=6.0
  4. black sand clean up - Page 3 - Treasures

    Have you ever considered using citric acid or a salt roast over a hot fire to break down the oxides and allow ... Not all black sand will have coated gold hiding as ...
    www.treasurenet.com/…041-black-sand-clean-up-3.html
  5. Yellow Staining, Acorbic Acid Works Well, BUT..... [Archive ...

    ... I began to notice the pool steps and liner begin to turn ... 25000 gal, hayward sand filter, hayward super pump, raypak ... People have used citric acid, ...
    poolforum.com/pf2/archive/index.php/t-9460.html
  6. Dharma Acid Dyes for Silk, Wool, and Nylon

    ... or citric acid which is odorless. Acid Dyes ... to get most of our colors of Dharma Acid Dye, except Black and Deep Navy (4%). Jacquard Acid Dyes have a ... Sand ...
    www.dharmatrading.com/dyes/dharma-acid-dyes.html
  7. Bob's Rock Shop: Mineral Cleaning - Rockhounds

    As promised this article is first in a series on how to clean ... any loose sand and dirt and to make the acid last ... Fe+2 in the Citric Acid.
    www.rockhounds.com/rockshop/john_betts/clean1.html
  8. Cleaning the inside of copper still - Equipment - ADI Forums

    Cleaning the inside of copper still ... Professional Sand and Ice Sculptor ... I would do caustic first then citric or whatever acid you use.
    adiforums.com/index.php?showtopic=1987
  9. How to Remove Gold from Black Sand with Nitric Acid | eHow

    How to Remove Gold from Black Sand with Nitric Acid. ... How to Remove Black Weave Glue From Matted Hair. How Do I Remove the Black From a Bad Dye Job? You May Also Like.
    www.ehow.com/…98_remove-black-sand-nitric-acid.html
  10. Citric Acid - Soda Blast

    Green is the new Black for Business ... Soda Blast or Cob Blast or Sand Blast with one machine ... Granulated Citric Acid is as safe as ...
    www.soda-blast.com/citric_acid.htm
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