} // --> Geological Society of Minnesota Common Minnesota Minerals - #1 Minerals may be identified by examining their external form and several physical properties, such as color, luster, streak, cleavage, fracture and hardness.
(Geological Society of Minnesota Common Minnesota Minerals - #1 Minerals; may be identified; ) (Geological Society of Minnesota Common Minnesota Minerals - #1 Minerals; by examining; their external form)
Geological Society of Minnesota Common Minnesota Minerals - #1 Minerals Geological Society of Minnesota Common Minnesota Minerals - #1 Minerals
may be identified by examining
their external form