Answer:
true because it said that I. a book I read
It could either be of these Halite, Calcite,Granite igneous rock,Basalt-igneous
rock,Metamorphic,Gabbro-igneous,Igneous rock,Metamorphic
rocks,Sedimentary rock, or Obsidian rock.
<u /><u /><em>Dunes </em>and <em>unusually shaped rocks</em>