C. A is a naturally occurring, inorganic solid that has a definite chemical composition with a structure. d. is a rock that forms when lava from a volcano cools without crystallizing.
e. A mineral has a luster if it looks like a polished metal such as gold, aluminum, lead or copper.
f. Fredrick Mohs, a mineralogist, devised a scale to test a mineral's resistance to being .
g. Conchoidal fracture in minerals creates a smooth surface that is similar to the surface of a conch or seashell.
h. When a diamond cutter wants to get rid of a in a diamond he separates the flaw from the rest of the diamond by cleaving it off.
i. Mineral collectors use a mineral's as a way to eliminate minerals when they are trying to identify an unknown mineral.