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minerals
Ryan Evans
37
Science
7th Grade
01/08/2014

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Cards

Term
What is a mineral?
Definition
It is an inorganic solid which makes up rocks.
Term
How many elements occur naturally in the earths crust?
Definition
90
Term
What is the most common mineral?
Definition
silicates
Term
What elements does silicate contain?
Definition
silicon and oxygen
Term
appearance
Definition
color and texture
Term
hardness
Definition
How hard
Term
Mohs scale
Definition
hardness scale for mineral
Term
diamond
Definition
hardest mineral
Term
Talc
Definition
softest mineral
Term
fracture
Definition
mineral breaks irregularly
Term
luster
Definition
Mineral reflects light
Term
specific gravity
Definition
comparing weights of equal sized samples
Term
streak
Definition
powder color of mineral
Term
cleavage
Definition
how a mineral breaks along a plane
Term
what two characteristics make a mineral a gem?
Definition
beautiful, and rare
Term
what is an ore?
Definition
if it contains a useful substance that can be mined at a profit.
Term
three examples of ores?
Definition
bauxite-aluminum
hematite-iron
magnetite-iron
Term
smelting
Definition
a substance is melted to separate it from unwanted materials
Term
How many elements occur naturally in the earths crust?
Definition
90
Term
bauxite
Definition
aluminum
Term
hematite
Definition
iron
Term
Magnetite
Definition
iron
Term
what is a blood diamond?
Definition
Illegally traded diamond
Term
in what form are these diamonds sold or traded?
Definition
Rough
Term
at one time what percent of the worlds diamonds production was represented by blood or conflict diamonds
Definition
4%
Term
why are these conflict diamonds bad
Definition
associated into violence
Term
What was the purpose of the Kimberly process?
Definition
wanted diamond mining legit
Term
what is the requirement of the Kimberly process certification scheme?
Definition
they had to be certified
Term
why has the scheme not worked as well as they hoped?
Definition
not all countries were certified
Term
what is the problem in Zimbabwe?
Definition
people ceased the mines and killed people.
Term
detrital
Definition
sediment compacted, cemented together
Term
conglomerate
Definition
large pebbles
Term
sandstone
Definition
made up of sand
Term
shale
Definition
made up of clay
Term
chemical
Definition
made up of dissolved solids
Term
limestone
Definition
calcium carbonate (seashells)
Term
halite
Definition
salt
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