minerals of granite gneiss

The Density of Common Rocks and Minerals - ThoughtCo- minerals of granite gneiss ,Density is a measure of the mass of a substance per unit measure. For example, the density of a one-inch cube of iron is much greater than the density of a one-inch cube of cotton.How to Identify Rocks and Minerals - Jan Rasmussen.comwww.janrasmussen.com iii NUMERICAL LIST OF ROCKS & MINERALS IN KIT See final pages of book for color photographs of rocks and minerals.