Shared Flashcard Set

Details

Minerals
Lou Baker
28
Science
7th Grade
01/08/2014

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Cards

Term
what is a mineral
Definition
make up rocks
Term
how many minerals occur naturally in the Earth's crust
Definition
90
Term
most common mineral
Definition
Silicates
Term
what do silicates contain
Definition
Silicone and oxygen
Term
appearance
Definition
color
Term
hardness
Definition
how hard a mineral is
Term
Moh's scale
Definition
measures hardness of minerals
Term
hardest mineral
Definition
diamond
Term
softest mineral
Definition
talc
Term
luster
Definition
way it reflects light
Term
specific gravity
Definition
density of mineral
Term
streak
Definition
color in powdered form
Term
cleavage
Definition
breaks along a plane
Term
fracture
Definition
uneven break
Term
two characteristics that make a mineral a gem
Definition
beautiful, rare
Term
what is an ore
Definition
a rock that contains a useful mineral that can be mined at a profit
Term
one example of ore
Definition
hematite-iron
Term
one example of ore
Definition
magnetite-iron
Term
one example of ore
Definition
bauxite-aluminum
Term
smelting
Definition
separating minerals from rocks/ore
Term
what is a blood diamond
Definition
a diamond that is illegally traded to fund conflict in a war-torn area
Term
what form are the blood diamonds sold in
Definition
rough form
Term
at one time, what percent of the worlds diamond production was represented by blood or conflict diamonds
Definition
4%
Term
why are the conflict diamonds bad
Definition
people were being used as slaves to get the diamonds
Term
what was the purpose of the kimberly process
Definition
to stop trading of conflict diamonds
Term
what is the requirement of the kimberly process certification scheme
Definition
members are required to certify that all diamonds are mined legitimently
Term
why has the scheme not worked very well
Definition
lack of political will among member states
Term
what is the problem in zimbabwe
Definition
they are forcing people to work in mines and if they don't they get beat
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