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Classifying Rocks

all about rocks and minerals

QuestionAnswer
minerals are: naturally occuring substances,inorganic, solid, crystal structures with definite chemical composition
naurally occuring must be formed naturally on its own; not man-made
inorganic mineral cannot come from materials of a once-living thing
solid a mineral is always solid with definite volume and shape, the particles of it are packed very tightly
crystal structure the particles of a mineral line up in a pattern that repeats over and over creating a solid called crystal
definite chemical compositions mineral always contains certain elements in definite proportions, almost all minerals are compounds
compound 2 or more elements chemically combined
What are the 8 properties of minerals? hardness, streak, luster, density, cleavage, fracture, fluorescence
hardness the minerals ability to resist being scratched
Mohs hardness scale ranks 10 minerals from hardest to softest
streak the color of a minerals powder
luster how the mineral reflects light from its surface
density the mass in a given space
cleavage when a mineral looks like it is/is able to be broken evenly
fracture when a mineral is not broken evenly
fluorescence when minerals glow under ultraviolet light
magnetism minerals are magnetic or not
rocks are: mixtures of minerals and other materials
mineral composition the minerals a rock is composed of that determine the char
Created by: imanna95
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