Search results

...s nearly pure [[calcium carbonate]]. It could be considered an [[:Category:ores|ore]] of calcium, but calcium is rarely desired in elemental form, and isol

* Silver occurs as a substitution impurity in lead ores such as [[galena]] * Silver occurs as a substitution impurity in copper ores such as [[chalcopyrite]]

Smithsonite, along with [[Hemimorphite]] are primary ores of [[zinc]]

====from ores not containing iron or uranium==== ... vanadium-bearing ores or slags are crushed, ground, screened, and mixed with a sodium salt such a

====from ores not containing iron or uranium==== ... vanadium-bearing ores or slags are crushed, ground, screened, and mixed with a sodium salt such a

# Produce [[calcium chloride]] from calcium ores by combining them with [[hydrochloric acid]]

* Small (≤ 10%) amounts are present in lead ores such as [[galena]]

* {{cite patent|2262185|title=Process of extracting manganese from lean ores.}}

* [[gold]], [[nickel]], and [[copper]], whose ores often contain a small percentage of platinum

* The primary ores of zinc are [[hemimorphite]], [[smithsonite]], and [[sphalerite]]

Lead ores usually have many metallic impurities. Each is removed by the addition and