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classifying rocks1

cleavage a minerals ability to split easily along flat surfaces
fracture the way a mineral looks when it breaks
streak the color of a minerals powder
luster the term that describes how a mineral reflects light from its surface
mohs hardness scale It ranks ten minerals from softest to hardest
Crystal A solid with flat sides that meet at Sharp edges and corners
Element A substance composed of a single kind of atom
Flourescence A minerals ability to glow under ultraviolet
Geode A rounded, hollow rock that is often lined with crystals
Crystallization The process by which atoms are arranged to form a material with a Crystal structure
Solid A substance that keeps its shape because it's particles can't flow freely
Solution A mixture in which one substance dissolves in another
Vein Where minerals from a narrow channel or slab in the rock
Inorganic Because minerals do not come from living things, they are not regular
Metamorphic rock When an existing rock is changed by heart, pressure, or chemical reactions
Igneous rock Forms from the cooling of molten rock
Sedimentary rock When particles of other rocks or the remains of plants and animals are cemented together
Texture The look and feel of the rocks surface
Banded Grains of different colors
Non-banded Grains that occur randomly
Coarse-Grained Magma cools slowly
Fine-Grained lava cools rapidly
Exstrusive Igneous rock formed from lava that erupted onto earth surface
Intrusive Igneous rock formed from magma below earth surface
Porphyry A rock with large crystals
Erosion Water or wind loosen and carry away fragments of rock
Deposition Sediments settle out of water or wind
Compaction Sediments are pressed together in layers
Comentation Dissolved minerals glue glue sediments together
Chemical rock When minerals that are dissolved in a solution crystallize
Organic rock Forms where the remains of plants and animals are deposited in thick layers
Folitated Metamorphic rocks that have grains arranged parallel layers or bands
Created by: jjperry