Review Game
Give the FULL definition of a mineral
Solid, naturally occurring, inorganic, and has a crystal structure and definite chemical composition
What does it mean when I say a mineral has a definite chemical composition?
A set amount of each chemical -ratio of each chemical
What is crystallization?
The process by which atoms form a solid with an orderly, repeating pattern
How does crystallization from water occur?
When water cools, the particles of the dissolved substances come together again in the solution and crystallize
Give 4 ways you can test to see if a mineral is gold? At least one should be an unusual property of gold.
- crystalization from water -Density -Hardness -Color/streak -Luster -Cleavage/Fracture -Crystal Shape
What is cleavage in minerals?
If a mineral breaks along smooth, flat surfaces, it has cleavage
What is Fracture in minerals?
A mineral that breaks along rough or irregular surfaces displays fracture
What is an ore and why do I wish I had some?
Deposits of metallic or nonmetallic minerals that can be produced at a profit (any mineral that has value for us)
What is a rock?
Naturally occurring solid mixture composed of minerals, smaller rock fragments, organic matter, or glass
What is a grain and where can they be found?
The individual particles in rocks
What are the 3 classifications of rocks?
Igneous, sedimentary, metamorphic
How are igneous rocks formed?
Molten rock inside the earth erupts and cools. Minerals crystallize and form the grains of new igneous rock
What is texture?
The grain size and how the grains are arranged
What is the difference between lava and magma?
Magma is molten rock inside the earth and lava is after it erupts onto Earth’s surface
Geologists describe the texture of igneous rocks with large crystals as ____________
Coarse-grained
What is sediment and how is it involved in the process of creating sedimentary rock?
Rock and mineral fragments that are loose or suspended in water -sedimentary rock is created when these sediments are compacted together
What is sediment and how is it involved in the process of creating sedimentary rock?