rocks Flashcards
a naturally fromed inorganic soild that has a definite crystalline structure
mineral
a substance that cannot be separated or broken down into simpluer substances by chemical means
element
a substance made up of atoms of two or more different elements jointed by chemicla bounds
compounds
a soild whose atoms, ions, or molecules are arranged in definite pattern.
crystal
the way in whice a mineral reflects light
luster
the color of powder of a mineral
streak
the splitting of a mineral along smooth, flat surfaces
cleavage
the manner in which a mineral breaks along either currved or irreguler surfaces
fracture
the ratio of the mass of a substance to the volume of the substance
density
a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted.
ore
minerals which contain one or more metallic elements.
metallic minerals
Non-metallic mineral reserves consist of stone quarries and clay and sand pits;
Non-metallic minerals
a precious or semiprecious stone, especially one cut, polished, and used in a piece of jewelry.
Gemstones
Igneous rock, or magmatic rock, is one of the three main rock types
. Igneous rock
formed from pre-existing rocks or pieces of once-living organisms.
Sedimentary rock
