Rocks along Minnesota's North Shore are the remains of lava flows dating to about 1.1 billion years ago. View Minnesota rocks organized in drawers by type. The Minnesota Rocks piece is located near Collectors' Corner.
Classify and identify rocks and minerals using characteristics including, but not limited to, density, hardness and streak for minerals; and texture and composition for rocks.
Relate rock composition and texture to physical conditions at the time of formation of igneous, sedimentary and metamorphic rock.
Group or classify rocks in terms of color, shape and size.
Recognize that rocks may be uniform or made of mixtures of different minerals.
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