Exam 3: Matter and Minerals

The more oxygen ions that are shared in silicate minerals, the higher the oxygen-to-silicon ratio.

Ferromagnesian minerals have a higher specific gravity than nonferromagnesian minerals.

Which ferromagnesian mineral is believed to constitute up to 50 percent of the mantle?

Using the samples in this image, indicate the number of cleavage directions this crystal displays.(Please note that cleavage surfaces do not equate to cleavage directions.)

A ________ is a solid, naturally occurring, cohesive substance composed of minerals or mineral-like materials.

A(n)________ is a silicate structure where no silica tetrahedra share any oxygen ions.

If concrete is made by mixing cement with gravels and sands, is concrete a rock? Why or why not?

________ is defined as a mineral's resistance to scratching.

Most marine organisms produce the mineral substance ________, which will later become limestone.

Why do atoms exchange or share electrons?

What is the name of the chart that organizes elements in order of chemical properties?

Restricted ocean basins located in warm climates will experience high rates of evaporation, which will result in the creation of evaporate minerals such as gypsum or halite.When such a solution containing dissolved mineral matter evaporates, why does the mineral matter precipitate instead of evaporating with the water?

What is the best method to distinguish between muscovite mica and biotite mica?

Using the cleavage planes and shapes in this image, list one mineral example for each crystal.

An isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons.What is the atomic mass of this isotope?

Which of the following is not one of the three primary ways minerals can form?

Which of the following substances is not a mineral: gold, water, ice? Why?

Which negative ion forms the basis of the oxide minerals?

Which group of silicate minerals has two planes of cleavage that are oriented at approximately 60° and 120°?

What are the two groups of feldspar minerals called?