II Minerals: are solid, naturally

one mineral can come in many colors. (see text p.50) 2. Streak is. the color of a mineral in its powdered form. To test streak, rub the mineral. on a ceramic . Streak Plate. Mineral Streak - White and Black Streak Plates. Image- mineral streak. The streak is the same even if a mineral comes in many colors. Hardness: the resistance to being ... ................
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