Name the physical property (hardness, color, streak, etc.) described by the following statement. Breaks along smooth planes

Provide an economic use for galena.

For halite, list one diagnostic property that can help distinguish this mineral from others.

A photo of agate, a variety of quartz composed of microscopically small crystals, is provided below. Based on this image, describe the habit of this sample.

Describe the cleavage of muscovite. Include the number of directions and degrees of cleavage angles.

Name a mineral that exhibits the physical property of striations.

Name a mineral that exhibits the physical property of one direction cleavage.

Which picture (A or B) illustrates the crystal form of fluorite?  

For muscovite, list one diagnostic property that can help distinguish this mineral from others.

On March 22, at what latitude will the noon sun be directly overhead? Use the picture below. It’s called an analemma.