Why Is Pyroxene More Susceptible to Oxidation Than Either Feldspar

question 19

Multiple Choice

Why is pyroxene more susceptible to oxidation than either feldspar or quartz?

• A)because it contains less silica
• B)because it contains the most ferrous iron
• C)because it is a mafic mineral
• D)because it is more commonly exposed to oxygen

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Definitions:

Iris

The colored part of the eye that controls the size of the pupil and the amount of light that enters.

Sclera

The white outer layer of the eyeball, providing protection and giving the eye its shape.

Lens

A transparent structure in the eye that focuses light rays onto the retina to form clear images.

Retina

A light-sensitive layer at the back of the eye that converts light into electrical signals sent to the brain.