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MINERALS and gemstones
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What is meant by having a 'crystalline structure?' Define.
A special arrangement of the mineral's atoms.
List at least THREE qualities that makes gemstones unique & valuable.
translucent, durable, formed in rare places, special crystalline structure, colorful, sparkly :*), they can be cut & polished
What makes a SILICATE mineral different from a NONSILICATE Mineral??
Silicate has to have BOTH oxygen and silica- while non silcates can have either one.
Define RECLAMATION.
Putting the earth back to the same or better state after it is mined.
What type of luster does this mineral show?
 
nonmetallic
 
submetallic
 
metallic
 
vitreous
What type of luster does this mineral show?
 
metallic
 
submetallic
 
waxy
 
vitreous
Which one is not a major ORE that is mined in Idaho?
 
calcite
 
molybdenum
 
silver
 
gold
What type of LUSTER does this mineral have?
 
vitreous
 
metallic
 
nonmetallic
 
submetallic
How do you measure density?
 
Mass divided by volume
 
Volume divided by mass
 
grams multiplied by mass
 
mass mulitplied by grams over volume
Which is NOT a place or description of how a mineral can form?
 
from the wind depositing minerals
 
underneath the ocean in black smokers
 
in hot water solutions
 
from heat and pressure inside the earth
What is CC's favorite mineral?
 
galena
 
obsidian
 
magnetite
 
quartz
Whena mineral breaks unevenly along its edges it's called....
FRACTURE
When a mineral shows signs of even breaking along planes, it's called....
cleavage :*P
Ice Cubes. Explain WHY or WHY THEY ARE NOT considered minerals....
teacher approved answer again!
Describe how you test for a mineral's hardness?
Scratch it on glass and if it leaves a mark, it's considered harder than a 5 on the MOH's scale.
Name ONE way minerals can form~ be descriptive!
Teacher will approve your answer, k?
What GROUP of minerals is found more abundantly?
silicates!
What does a number 10 on the Moh's Scale tell you?
The mineral is hard.
Why do you use a mineral's streak instead of just color?
The outside color may be affected by weather or oxidation while powder from the streak will remain true.
Name the FOUR properties a mineral must have.
solid, inorganic (not living), formed naturally, crystalline structure
Which is NOT a quality of a mineral?
 
translucent (clear like a diamond)
 
inorganic
 
formed naturally
 
a solid
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