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Question
In the classification of minerals, which mineral does not form the group of valuable metallic minerals?
In the classification of minerals, which mineral does not form the group of valuable metallic minerals?
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Solution
The correct option is A Copper
The metallic minerals are subclassified as (1) ferrous (iron, manganese, nickel, and cobalt), (2) nonferrous (copper, zinc, lead, tin, and bauxite), and (3) precious (gold, silver, and platinum). A precious metal is a rare, naturally occurring metallic chemical element of high economic value.
The metallic minerals are subclassified as (1) ferrous (iron, manganese, nickel, and cobalt), (2) nonferrous (copper, zinc, lead, tin, and bauxite), and (3) precious (gold, silver, and platinum). A precious metal is a rare, naturally occurring metallic chemical element of high economic value.
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