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24 Cards in this Set
- Front
- Back
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digs holes in stair-step fashion
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open pit mining
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drags lines underwater
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dredging
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uses explosives
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mountain top removal
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uses tunnels deep underground
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shaft mining
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removes top layer, then deposit
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strip mining
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most abundant mineral group
made of... basic shape |
silicate, silicon and oxygen, silica tetrahedron
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native minerals are...
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elements that occur in nature in uncombined forms.
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number of crystal systems
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6
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crystals need__and__to form
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space, time
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crystals form when magma__or water__.
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cools, evaporates
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molten mineral inside the earth is called__, whereas on the surface it is called__.
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maga, lava
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smelting
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the way of extracting metal from its ore using extreme heat
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what mineral reacts with HCl
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magnesium
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what mineral is magnetic
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magnetite
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what mineral exhibits double refraction
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calcite
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what mineral has hexagonal crystals and a hardness of 9
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corundum
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what mineral has a hardness of 10
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diamond
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what mineral is used as pencil lead
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graphite
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what mineral is bright yellow
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sulfure
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what mineralhas a red-brown streak
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hematite
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what mineral tastes salty
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halite
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what mineral exhibits double refraction
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calcite
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what is specific gravity
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the ratio of the density of a substance to the density of another substance
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name 5 requirements
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inorganic, solid, naturally occurring, crystal structure, chemical makeup
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