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Hard Rock Gold Ore Samples Calif

Hard rock, black sands, cons, native, sulfides, tellurides. 35 Au Ag assay, 30 Au only. 10 prep per sample jaw, dry, split, pulverize if your sample is not already crushed, dried or pulverized to the consistency of coarse flour. If your sample needs this 10 prep, please send only 60-100 grams of material that best represent your ore.

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