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Earth Science Chapter 3 Minerals
All minerals are....
Naturally occurring. You use minerals and products made from them every day!
An inorganic crystalline solid is formed in a lab. Why is it NOT a mineral?
It is NOT naturally occurring.
Why is glass NOT a crystal?
It is not crystalline
What is a solid in which the atoms are arranged in closely repeating patterns?
When can large crystals form?
When magma cools SLOWLY.
What has salt from evaporated seawater been formed from?
What are the 2 MOST COMMON elements in minerals?
OXYGEN & SILICON
Even if a mineral looks uneven on the outside, are the atoms unevenly ordered?
NO. They have an orderly arrangement on the INSIDE.
That atoms are arranged in a pattern that is repeated OVER & OVER again is what?
Common PHYSICAL properties of minerals include all the following EXCEPT:
What is the easiest way to tell if a sample is gold or pyrite?
What is the HARDEST mineral with a 10 on the Mohs Scale?
If a mineral is hard...
It is hard to scratch.
What is an example of a mineral with a NONMETALLIC luster?
The specific gravity of a mineral compares its weight with an equal VOLUME of what?
What does STREAK measure the color of a mineral's....
How do you determine whether a mineral has cleavage or fracture?
By the arrangement of its atoms.
All of the following are some other property used to identify minerals EXCEPT...
* Reaction to hydrochloric acid
* Boiling point
* The ability for the mineral to create a double image
The boiling point is NOT used to identify minerals.
Identifying minerals helps you recognize ....
Their VALUABLE MINERAL RESOURCES.
Is the appearance of a mineral enough to be able to identify it?
(Using only color you can be fooled when trying to tell the difference between gold and pyrite.)
Why is hardness sometimes referred to as SCRATCHABILITY?
The measure of how easily a mineral can be scratched is its HARDNESS.
Since a diamond is the hardest mineral, can it be broken?
YES, it can shatter if given a hard enough blow.
What is an important property used to distinguish minerals?
LUSTER (Can be metallic or nonmetallic)
What is MORE uselful for mineral identification than color?
What allows some minerals to be broken along SMOOTH FLAT CLEAVAGE planes?
Weak or fewer bonds within the structure.
Are some minerals natural magnets?
YES (Lodestone is that is a varity of magnetite)