Terms placed in this category generally are terms that help determine rocks and minerals from each other.
“Specific gravity is a term that describes the ratio of density of a solid to the density of...Specific gravity
“Lustre (or luster) is a term that describes how light reflects off of a rock or mineral. This...Lustre
“Cleavage is a split parallel to aligned fine grains in a rock. It is a kind of foliation...Cleavage
“The streak of a mineral is the color that shows when a mineral is scratched on a surface, such...Streak
“Sedimentary rocks are one of the three different rock types. They are created at or around the...Sedimentary rock
“Igneous (ĭg'nē-əs) rocks are one of three rock types in the rock cycle. Igneous rocks are...Igneous rock