RobertCampbell1585 RobertCampbell1585
  • 10-04-2018
  • Biology
contestada

Gemstones, such as diamonds, rubies, sapphires, emeralds, aquamarines, and tourmalines, are __________ minerals. nonmetallic all copper ores metallic not precious

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jamuuj jamuuj
  • 19-04-2018
The minerals given in the question above are non metallic minerals. 
Non metallic minerals do not contain metal elements in their inorganic chemical formula they include; Clay, diamond, dolomite, gypsum, mica, etc, While metallic minerals are minerals which contain one or more metallic elements. They occur in rare, naturally formed concentrations known as mineral deposits. 
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