rocks and minerals Flashcards
Mineral
a solid inorganic substance of natural occurrence.
Rock
the solid mineral material forming part of the surface of the earth
Element
a part or aspect of something abstract
Compound
is a substance formed when two or more chemical elements are chemically bonded together
Crystal
is a solid material whose constituents
Color
the quality of an object or substance with respect to light reflected by it
Luster
a gentle sheen or soft glow
Streak
is the color it displays in finely powdered form
Cleavage
refers to how some minerals break along flat planes when exposed to stress
Fracture
the cracking or breaking of a hard object or material.
Density
the degree of compactness of a substance
Ore
a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted
Metallic Minerals
which contain one or more metallic elements
Non-Metallic Minerals
Non-metallic mineral reserves consist of stone quarries and clay and sand pits
Gemstones
Healing stones have been used for centuries to fix ailments
