Minerals
A mineral must have a structure made up atoms that are arranged in an orderly, repeating pattern. Also known as this.
What is a crystalline structure?
Obsidian is this type of rock that is formed by quickly cooling lava on the Earth's surface. (Be specific)
What is extrusive igneous rock?
I was an igneous rock that has been exposed to extreme heat and pressure for a long period of time. Now I am this type of rock.
What is metamorphic rock?
The creation of smaller pieces of rock.
What is weathering?
Identifying minerals can be tricky. One way is to identify the color of its powder by scratching it on a tile plate.
What is streak?
Limestone and Sandstone are examples of this type of rock.
What is sedimentary rock?
I was a metamorphic rock that has been melted and cooled.
What is igneous rock?
When sediment settles.
Minerals can be formed 2 different ways. One is by the cooling of magma, this is the other.
What is the evaporation of water with minerals dissolved in it?
Slate is this type of rock that has been exposed to extreme heat and pressure.
What is metamorphic rock?
This is the process that occurs to transform a metamorphic rock into a sedimentary rock.
What is weathering and erosion?
The squeezing of sediment to remove water and air.
What is compaction?
I am a purple mineral with a hardness of 7 and a white streak.
What is amethyst?
When a mineral breaks along smooth, flat surfaces.
What is cleavage?
What is sedimentary rock?
What is time, heat, and pressure?
When individual sediments "glue" together to form a new rock.
I am an olive green mineral with a glassy luster. I have a hardness of 6 and I exhibit fracture rather than cleavage.
What is olivine?
The hardness of a mineral is measured with this.
What is the Mohs hardness scale?
Granite is an example of this type of rock that is formed by slowly cooling magma under the surface. (Be specific).
What is intrusive igneous rock?
I was once a metamorphic rock but I have been worn away by weather and erosion to become this.
What is sediment?
The movement of sediment to a new location.
What is erosion?
I am a black mineral with a hardness of 6. My luster is metallic and my powder is also black. I do not break along smooth edges.
What is magnetite?