Exam (elaborations)
GIA Colored Stones Assignment 2(questions and answers)
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GIA Colored Stones Assignment 2(questions and answers)
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GIA ColoredStones
Assignment
2(questions and
answers)
rocks - answer the raw materials of gemstone
formation
the continental crust - answer most colored
stones form in...
gem formation - answer geological conditions
during mountain building are favorable for...
slow cooling - answer In igneous rocks, large
crystals indicate
, quick cooling - answer In igneous rocks, small
crystals indicate
volcanic rock - answer What can transport
existing gems from deep in the crust to the earth's
surface?
pegmatites - answer Some of the largest and
most perfect gem crystals come from...
gems - answer superheated, pressurized water
can transfer minerals in solution and redeposit
them in veins to form...
mining economics - answer demand, political
climate, labor costs, environment, accessibility,
type of deposit, and mining methods all effect...
an understanding of gemstone formation - answer
What helps prospectors pick the right places to
look for gems?
thousands of tons - answer What amount of rock
may be eroded to yield only a few ounces of gem
material?
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