The First Minerals to Be Mined Were ________ and ________

Q81: Limestone is composed almost entirely of calcite

Q82: What theory dramatically improved geologist's ability to

Q83: Electrical attractions between atoms lower the total

Q84: Sulfates always include _.<br>A)SiO4-4<br>B)SO4-2<br>C)CO3-2<br>D)Cl-1,F-1,or Br-1

Q87: The strong tendency of certain minerals to

Q88: The most common group of rock forming

Q89: Which mineral reacts readily with cool,dilute hydrochloric

Q90: Gypsum,which is widely used in plaster and

Q91: Silicates most commonly form _.<br>A)at the surface

Q110: Gold is one of the rarest elements