How to Test a Rock for Gold | Sciencing
Take a rock that contains gold in it – this process works best on quartz rocks – and set it inside a glass jar. Add white cooking vinegar to the jar, covering the entire rock and then some with the vinegar. The acid-based vinegar slowly dissolves the quartz crystals surrounding the gold, leaving only bits of quartz attached to the gold.Mini Thor Mill | Sepor, Inc - Sepor, Inc | Gold Mining,,Bench Top Ring Mills have been developed for laboratories pulverizing 1 to 100 gram samples. Used for pulverising rocks, soil, coal, cement, glass, limestone, bricks, wood, plant material, slags, concrete etc. for XRF, XRD or other instrumental methods or wet chemistry.GS-5000 Gold Stryker Gold Ore Impact Flail Processing,Our Gold Stryker® GS 5000HV is a extreme duty high quality made here in the USA flail impact gold mill that can process and crush up to 5 tons of (4.5 inch) rock in a day, all the way down to #300 mesh through the mill to release the gold. Perfect for the small gold mining operation.