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archer
minerals
24
Science
7th Grade
01/08/2014

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Term
what is a mineral?
Definition
a natural occurring inorganic solid with a definite chemical composition and an arrangement of atoms.
Term
how many elements occur naturally in the Earth crust
Definition
90
Term
what is the most conman mineral
Definition
silica
Term
what elements does it contain
Definition
silicon + oxygen
Term
name and describe seven physical properties of minerals
Definition
hardness- how hard a mineral is
Term
Luster
Definition
ability to reflect light
Term
cleavage
Definition
how a mineral breaks along a plane
Term
fracture
Definition
mineral breaks irregulary
Term
apererance
Definition
color texture
Term
streak
Definition
powered color of mineral
Term
specific gravity
Definition
denstity
Term
what is an ore
Definition
contains a useful substance that an be mind fora profit
Term
name three examples of ores
Definition
bamxite-aluminoum
hematite- iron
magnetite- iron
Term
what is smelting
Definition
extracting metallergy
Term
mohs scale
Definition
a scale is the softest rocks to the hardest rocks that was measured from 1-10
Term
what are "blood diamonds"?
Definition
they are diamonds that originate from control forces for fractions that are used for military fund
Term
in what form are these diamonds sold or traded?
Definition
"rough"
Term
at one time, what percent of the worlds diamond production was represented by "blood" or conflict diamonds
Definition
4%
Term
why are these conflict diamonds bad?
Definition
man ,women, and children are being used as slaves to mind them.
Term
what was the purpose of the Kimberly Process?
Definition
to stop the process and insure no violence
Term
what is the requirement of the Kimberly Process Certification Scheme?
Definition
that mine has to be certified
Term
why was this scheme not worked as well as they hoped?
Definition
some states are to powerful and they cant enforce it
Term
what is the problem in Zimbabwe?
Definition
Zimbabwe are beating and killing miners who wont mine for them or pay bribes.
Term
what are "blood diamonds"?
Definition
they are diamonds that originate from control forces for fractions that are used for military fund
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