A naturally occurring, inorganic solid that has a definite crystalline structure.
Mineral
A ranking of minerals from softest to hardest using Moh's scale.
Hardness
A type of rock formed when magma freezes (solidifies)
Igneous
A type of rock formed from sediments or small pieces of rock or minerals
sedimentary
A type of rock which changes other rock types with heat and pressure
metamorphic
Mineral grains align into bands or layers, has a striped appearance
foliated
Mineral grains do not align in bands or layers
Non-Foliated
When lava cools outside the earth's surface
extrusive
When magma cools inside the earth's surface
intrusive
When magma cools inside the earth's surface
Intrusive
A light colored igneous rock
felsic
How the mineral reflects light from its surface. Terms used to describe a mineral include earthy, waxy, pearly shiny and glassy
Luster
A dark colored igneous rock
mafic
Fragments of rock which are cemented together
clastic
The repeating pattern of a mineral's particles
Crystal Form
An igneous rock that cooled slowly producing large/visible crystals
course grained
Fragments of rock which are cemented together
Clastic
Made of remains of plants and animals
organic sedimentary
Minerals crystallize out of a solution (water) to become rock
chemical sedimentary
The repeating pattern of a mineral's particles
Crystal Form

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