Mineral Classification pt. 2

Which of the following mineral classes are characterized by containing polyatomic anions composed of a central atom covalently bonded to oxygen atoms?

• Native elements, oxides, halides, sulfides

• Carbonates, sulfates, phosphates, silicates

• Native elements, carbonates, sulfates, phosphates

• Oxides, halides, sulfides, silicates

What is the most abundant non-silicate mineral found in the Earth's crust?

• Aragonite

• Gypsum

• Calcite

• Apatite

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Which common sulfate mineral has been used for building and construction since ancient times?

• Anhydrite

• Alabaster

• Gypsum

• Selenate

What is the primary characteristic that distinguishes mineraloids from true minerals?

• They are not naturally occurring.

• They are not found in rocks.

• They lack a crystalline structure.

• They are always amorphous hydrated silica.