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How can you use the hardness of a rock to help identify what type of mineral it is?
obsidian.
Cleavage
how fast the magma cools.
By cooling and solidifying magma or lava
All of the above
Large crystals
Use it to scratch other solid materials of known hardness.
Metamorphic
The size of the crystals of igneous rocks is determined by:
obsidian.
Cleavage
how fast the magma cools.
By cooling and solidifying magma or lava
All of the above
Large crystals
Use it to scratch other solid materials of known hardness.
Metamorphic
How do igneous rocks form?
obsidian.
Cleavage
how fast the magma cools.
By cooling and solidifying magma or lava
All of the above
Large crystals
Use it to scratch other solid materials of known hardness.
Metamorphic
Which of the following minerals is LESS hard than diamond?
obsidian.
Cleavage
how fast the magma cools.
By cooling and solidifying magma or lava
All of the above
Large crystals
Use it to scratch other solid materials of known hardness.
Metamorphic
Which of the following characteristics is most TRUE of igneous rocks cooled slowly, deep underground?
obsidian.
Cleavage
how fast the magma cools.
By cooling and solidifying magma or lava
All of the above
Large crystals
Use it to scratch other solid materials of known hardness.
Metamorphic
Which term is not part of the commonly accepted definition of a mineral?
obsidian.
Cleavage
how fast the magma cools.
By cooling and solidifying magma or lava
All of the above
Large crystals
Use it to scratch other solid materials of known hardness.
Metamorphic
A glassy igneous rock that cools quickly, preventing crystals from forming is:
obsidian.
Cleavage
how fast the magma cools.
By cooling and solidifying magma or lava
All of the above
Large crystals
Use it to scratch other solid materials of known hardness.
Metamorphic
A student broke a mineral sample with the tap of a hammer. It broke along flat surfaces. Which property was the student investigating?
obsidian.
Cleavage
how fast the magma cools.
By cooling and solidifying magma or lava
All of the above
Large crystals
Use it to scratch other solid materials of known hardness.
Metamorphic
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