Rocks and Minerals in Their Natural State Are Never Harmful

Q44: Which of the following is not a

Q45: Feldspar makes up:<br>A) about 50 percent of

Q46: _ _is the characteristic shape of an

Q47: The tendency of some minerals to break

Q48: Every silicon atom surrounds itself with _

Q50: Calcite is a/an:<br>A) silicate mineral.<br>B) clay mineral.<br>C)

Q51: Fracture is the resistance of a mineral

Q52: Ice is a mineral.

Q53: On the Mohs hardness scale, diamond has

Q54: Quartz is composed of _.<br>A) silicon and