3 d deminstional 7 mineral groups 1 silicates

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3-D deminstional 7 Mineral groups : 1. Silicates Silicate anion Silicon and Oxygen Mineral : Augite Igneous Rocks Melting to crystallization Classification by texture
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Intrusive igneous bodies Classification by silica content How igneous rocks form from a melt Magma evolution Partial melting, bowen’s reaction series, differentiation, assimilation and magma mixing Origin of Maga Magma Where What melts Migration Crystalization and solidifcation Depth and rate of cooling Large minerals : deep and slow Small minerals: near surface and fast Texture fine -grain: slow course -grain: fast Size of minerals
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Where cooling occurs polymeization(silicates) Volatiles (gases) Viscosity Intrusive igneous Rock( might be short answer questions) Concordant= sill Types Size Discordant= Dikes and stops Types Sizes Magma Solid Liquid Volatiles Crystallization Ions: join or break constantly First crystals Shape:crystalline Temperature range Composition Classification Felsic: granite and rhyolite Intermediate Mafic Ultramafic Silicate minerals NA,K,vs MG,FE Temperature
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Magma evolution Differentiation Partial melting Magma mixing Assimilation Melting Temperature Geothermal gradient: temps increasing with depth Composition of rock Pressure Relation to temp of melting Direction of pressure in interior Volatiles Relationship to melting temp Which volates Related to plate boundaries Pressure: releases Volaties: water and sediments
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Rock Cycle Know the rock cycle: Major rock groups and processes 1) Igneous rocks a) Processes b) Major mineral groups 2) Sedimentary Rocks a) Processes b) Major mineral groups 3) Metamorphic Rocks a) Processes b) Major mineral groups
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