Earth Science A - NW 3

Two minerals with a tendency to peel into thin sheets

Biotite and Muscovite

Two most common minerals in earths crust

Quartz and Feldspar

Without taste, how can you tell the difference between calcite and halite?

Calicite changes color under UV light, reacts with acid, and has double refraction while Halite has none of those things.

Knowing how gypsum forms, how does having gypsum mines in Michigan tell us about the past?

It forms from the evaporation of seawater, so it tells us that Michigan was once underwater.

Quartz

Ollivine

Biotite

Hornblend

Muscovite

Almendine

Feldspar

Gypsum

Calcite

Halite

Flourite

Pyrite