Minerals are classified into groups primarily on a basis of ____________.
A) chemistry,specifically the cations within the chemical formula
B) chemistry,specifically the anions within the chemical formula
C) hardness;hard,soft,and medium are the three primary classes
D) number of cleavage directions present
Correct Answer:
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Q42: Which common gemstone results from biomineralization?
A)diamonds
B)garnets
C)pearls
D)sapphires
Q42: The silica tetrahedron that forms the backbone
Q43: Most commercially exploited metals are extracted from
Q44: The diamonds we see today do not
Q45: Diamonds are usually found in pipes 50
Q47: In which type of silicate are the
Q49: Which two gems are special versions of
Q49: In silicate minerals,tetrahedra may be coordinated to
Q50: Gemstones are commonly found in pegmatites,which are
Q50: The most abundant minerals belong to chemical
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