From the given set of minerals, the number of ores of copper is/are ___
Chalcocite, pyrargyrite, cuprite, carnallite, covellite, sphalerite, azurite, malachite, cryolite

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Solution

Copper ores:
1. Chalcocite – $C u_{2} S$
2. Cuprite – $C u_{2} O$
3. Covellite - $C u S$
4. Azurite – $2 C u C O_{3} . C u (O H)_{2}$
5. Malachite - $C u C O_{3} . C u (O H)_{2}$

Other ores:
Pyrargyrite – $A g_{3} S b S_{3}$ (also known as ruby silver; dark-red silver ore)
Carnallite – $K C l . M g C l_{2} .6 H_{2} O$
Sphalerite – $Z n S$ (also contains iron; but principally an ore of zinc)

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From the given set of minerals, the number of ores of copper is/are ___ Chalcocite, pyrargyrite, cuprite, carnallite, covellite, sphalerite, azurite, malachite, cryolite

From the given set of minerals, the number of ores of copper is/are ___
Chalcocite, pyrargyrite, cuprite, carnallite, covellite, sphalerite, azurite, malachite, cryolite