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minerals
griffin
35
Science
7th Grade
01/09/2014

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Cards

Term
what is a mineral
Definition
make up rocks
Term
how many elements occur naturally in the earth's crust
Definition
90
Term
what is the most common mineral
Definition
silicates
Term
what elements does it contain
Definition
silicon and oxygen
Term
appearance
Definition
color
Term
cleavage
Definition
mineral breaks along plane
Term
hardness
Definition
how hard
Term
hardness scale
Definition
mohs scale
Term
hardest mineral
Definition
diamond 10
Term
softest mineral
Definition
tale 1
Term
fracture
Definition
breaks irregularly
Term
luster
Definition
ability to reflect light
Term
streak
Definition
powdered color of mineral
Term
specific gravity
Definition
gravity=density
Term
what two characteristics make a mineral a gem
Definition
beautiful rare
Term
what is an ore
Definition
a rock that contains a useful substance that can be mined for a profit
Term
examples or an ore
Definition
bamxite, hematite, magnetite
Term
what is smelting
Definition
removing a useful substance for an ore
Term
examples of an ore
Definition
bexmite, oil
Term
examples of an ore
Definition
hematite, iron
Term
examples of an ore
Definition
magnetite, iron
Term
sediment
Definition
sand
Term
sedimentary rocks
Definition
forms when sediment are pressed out toghther
Term
compaction
Definition
pressure from upper layers pushed down on lower layers
Term
cementation
Definition
occurs when minerals such as quartz calcite and hematice are deposited between sediment
Term
erosion
Definition
the process of sediment moving by wind or water
Term
chemical sediment rocks
Definition
form when dissolved minerals come out of solution
Term
organtic sediment rocks
Definition
made of remains once-living things
Term
limestone
Definition
calcium carbonate is carried in solution in ocean water
Term
halite
Definition
when water that is rich in dissolved salt evaporates, it deposits the mineral halite
Term
detrial sediment rocks
Definition
are made from the broken fragments of other rocks
Term
weathering
Definition
the process moved by wind water and ice
Term
shale
Definition
mud or clay sediment
Term
sandstone
Definition
sand (quartz, feldspar)
Term
conglomerate
Definition
large pebbles (smooth)
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