Glossary of Earth Science Vocab Ch 3-11 Grade 6

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the physical property of a mineral that describes how light is reflected from its surface
a solid having a distinctive shape because its atoms are arranged in repeating patterns
a valuable mineral highly prized because it is rare and beautiful
the physical property of a mineral that causes it to break along smooth, flat surfaces
a naturally occurring, inorganic solid with a distinct internal structure and chemical compositions
a measure of how easily a mineral can be scratched
durable, lightweight metal obtained from minerals such as ilmenite or rutile
hot melted rock material beneath earth’s surface
the physical property of a mineral that causes it to break with rough or jagged edges
minerals containing silicon and oxygen, usually with other elements; the largest group of minerals
a mineral containing a useful substance, such as a metal, that can be mined for a profit
the color of a mineral when it is powered; usually observed by rubbing the mineral on a ceramic plate
earth material made of a mixture of one or more minerals, glass, mineraloids, or organic matter
a type of metamorphic rock created when mineral grains flatten and line up in parallel bands
a sedimentary rock-forming process that occurs when layers of small sedimentary become compressed by weight of layers above them
igneous rock that form when magma extrudes onto earths surface and cools as lava; have a fine-grained texture
process in which a power plant uses both the electrical and thermal energy produced by the plant
light-colored igneous rock formed from magma rich in silicon and oxygen
Waste coal
large piles of poor-quality coal lying near abandoned coal mines
Rock cycle
the process by which, over many of years, earth materials form and change back and forth among igneous rock, sedimentary rocks, and metamorphic rocks
molten materials from a volcano flowing onto earth’s surface
Metamorphic Rock
Rock formed from sedimentary, igneous, or other metamorphic rock due to increase in heat or pressure
Igneous rocks formed when magma cools below earth’s surface; generally have large mineral grains
Igneous rock
Rock formed by the cooling and hardening of molten material from a volcano or from deep inside earth
Loose materials such as rock fragment of rocks, mineral grains, and bits of plants and animals that have been transported by wind, water, or glaciers
A type of metamorphic rock created when mineral grains change, grow, and rearrange, but don’t form bands
A sedimentary rock-forming process in which large sediments are glued together by minerals deposited between the sediments
Dark-colored, dense igneous rocks that form from magma rick in iron and magnesium
Sedimentary rock
Rock formed when fragments of rocks, minerals and/or organic matter are compated or cemented together or preciiate out of solution

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