Which of the Following Does NOT Commonly Occur When Dark-Colored

question 14

Multiple Choice

Which of the following does NOT commonly occur when dark-colored mafic rocks weather?

• A)Mafic minerals weather to clay minerals by hydrolysis.
• B)Iron-bearing minerals can oxidize to form the iron oxide mineral hematite.
• C)The abundant quartz in the rocks dissolves and forms silica-rich spring deposits.
• D)Some minerals weather at different rate than other minerals.

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Definitions:

Acylium Ion

A positive ion (cation) characterized by the presence of a carbon atom double-bonded to an oxygen atom and bonded to an alkyl or aryl group, but lacking a hydrogen atom.

Butanoyl Chloride

A reactive acyl chloride compound with the chemical formula C4H7ClO, used in organic synthesis to introduce butanoyl functional groups.

Acylium Ion

A positively charged ion with the structure R-CO+, where R is an alkyl or aryl group, significant in various organic reactions.

Butanoyl Chloride

A four-carbon chain acyl chloride also known as butyryl chloride, used as an intermediate in chemical synthesis.