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Rocks and Minerals
n/a
29
Science
7th Grade
01/08/2014

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Cards

Term
what is a mineral
Definition
is a naturally occuring inorgonic sold with a definite chemical composition and orderly arrangement of atoms
Term
How many elements occur naturally in the earths crust
Definition
90%
Term
what is the most common mineral and what elements does it contian
Definition
oxygen and silacate
Term
Minerals are
Definition
hardness
Term
determines how hard a mineral is
Definition
Moh's
Term
whats the hardest mineral
Definition
10-diamond
Term
what is the softest mineral
Definition
1-tale
Term
how mineral reflects light
Definition
luster
Term
density
Definition
specifc gravly
Term
when minerals break along a plan
Definition
cleavage
Term
color of minerals powder
Definition
streak
Term
breaks unevenly
Definition
fracture
Term
color texture
Definition
appearance
Term
what two characteristic make a mineral a gem
Definition
rare and beautiful
Term
what is an ore
Definition
a useful substance that can be mined for a profit
Term
name examples of ores
Definition
magnetite
hematite
bauxile
Term
what is smelting
Definition
removeing a useful substance from an ore
Term
hematite
Definition
iron
Term
magnetite
Definition
iron
Term
bauxite
Definition
alumisum
Term
Detrital
Definition
sed. rock made from sediment
Term
conglomerate
Definition
sed. detrital rock made from pebbles
Term
sandstone
Definition
sed. detrital rock made from sand
Term
shale
Definition
sed. detrital rock made from clay/mud
Term
chemical
Definition
sed. rock formed from dissolved minerals
Term
halite
Definition
sed. chemical rock made from salt
Term
limestone
Definition
sed. chemical rock made from calcium carbonate
Term
organic
Definition
sed. rock formed from dead plants + animals
Term
coal
Definition
sed. organic rock made from dead plants
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