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Lecture 7

Lecture 7 - Minerals

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Earth Sciences
Earth Sciences 1083F/G
Cameron Tsujita

Lecture 7Minerals y What is a mineral o Defining characteristicsNaturally occurringInorganic at least never aliveSolidOrdered internalcrystalline structureDefinite chemical composition allows for small variation within set limitsIce can be considered a mineral y Minerals are the building blocks of rocks o Most rocks are aggregates of one of more minerals o Exceptions are coal and volcanic glass y Components of minerals o Minerals are made up of elements o Elements are substances that cannot be broken down to other substances by normal chemical means o There are 92 naturally occurring elements on Earth o Over 2000 distinct minerals are known o Only about 8 elements make up the bulk of the Earths crust mostly oxygen and silicon y Atomic Structure
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