How to Test a Rock for Gold Sciencing
13/03/2018· 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. Other more potent acids, such as those used in


































