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Rocks & Minerals

TermDefinition
Mineral A mineral is a naturally occurring substance that is solid and inorganic representable by a chemical formula, usually abiogenic, and has an ordered atomic structure.
Rock The solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans.
Hardness The quality or condition of being hard.
Cleavage The splitting of rocks or crystals in a preferred plane or direction.
Luster The state or quality of shining by reflecting light; glitter, sparkle, sheen, or gloss.
Streak The colour of a mineral when powdered and observed against an unglazed white porcelain plate.
Crystal Form The regular and repeated three-dimensional arrangement of atoms or ions in a crystal.
Silicate Minerals They are classified based on the structure of their silicate group which contain different ratios of silicon and oxygen.
Nonsilicates Lacking silicon.
Rock Cycle An idealized cycle of processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion.
Igneous Rocks Igneous rock is formed through the cooling and solidification of magma or lava.
Sedimentary Rocks Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies of water.
Metamorphic Rocks Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form".
Created by: probinson28
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