Shared Flashcard Set

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Hines
Minerals
15
Science
7th Grade
01/08/2014

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Cards

Term
apperance
Definition
color
Term
hardness
Definition
Moh's scales (diamond -10 tale -1)
Term
luster
Definition
way it reflects light
Term
specific gravity
Definition
(density)
Term
streak
Definition
color in powdered form
Term
clevage
Definition
breaks along a plane
Term
fracture
Definition
uneven break
Term
ore
Definition
a rock that contains a useful mineral that can be mined at a profit
examples: iron, gold, aluminum
Term
hematite
magenetite
Definition
iron`
Term
bauxite
Definition
aluminum
Term
smelting
Definition
separate a mineral from a rock/ore
Term
what is a mineral
Definition
a naturally occurring inorganic solid
Term
how many elements occur naturally in the earths crust
Definition
90
Term
what is the most common mineral and what elements does it contain
Definition
silicates
elements: silicone and oxygen
Term
what two characteristics make a mineral a gem
Definition
they are clearer and brighter
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