Test Procedures
This refers to the way that a mineral reflects light.
Magma that flows out of the Earth.
What is Lava?
Sedimentary Rock formed from the abundant deposits of loose sediments found on Earth's surface.
What is Clastic?
The percent of open spaces between grains in a rock.
What is Porosity?
Metamorphic rocks with wavy layers and bands of minerals are said to be this.
What is Foliated?
The measure of how easily a mineral can be scratched.
What is Hardness?
Rocks that cool quickly on the Earth's surface.
Horizontal layering in Sedimentary Rocks.
Mineral growth causes sediment grain to join together in this process.
What is Cementation?
The result of high temp and pressure over large regions of Earth's crust.
What is Metamorphic Rock?
The color of a mineral when it is broken up and powdered.
What is Streak?
Rocks that have a high level of iron and magnesium, but contain a very low level of silica.
What is Ultramafic?
Rock and mineral fragments that are the result of weathering.
What is Sediment?
The physical and chemical processes that transform sediments into sedimentary rocks is this.
What is Lithification?
The result of very hot water reacting with rock and altering its chemistry.
What is Hydrothermal Metamorphism?
Minerals that break with rough or jagged edges are said to have this.
What is Fracture?
Large, well-formed crystals surrounded by finer-grained crystals.
What is Porphyritic?
Layer of Chemical sedimentary rocks that form as as result of crystal grains precipitating out of a solution.
Sediment is laid down on the ground or sink to the bottoms of bodies of water in this process.
What is Deposition?
Local effect of molten rocks coming into contact with solid rock.
A type of density found by taking the ration of the weight of a substance to the weight of an equal volume of water.
What is Specific Gravity?
These rocks are an unusual variety of peridotite that often have diamonds in them.
Horizontal layering in sedimentary rock in which particle sizes become progressively heavier and coarse toward the bottom layers.
What is Graded-Bedding?
A mineral that contains a useful substance, that can also be mined for profit.
What is Ore?
Large crystals that form from the reorganization of atoms in solid rock during metamorphism are called this.
What is a Porphyroblast?