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1. What are main groups /families of igneous rocks according to their mineral composition (% quartz / % mafic minerals)?

1. What are main groups /families of igneous rocks according to their mineral composition (% quartz / % mafic minerals)?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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### Classification of Igneous Rocks Based on Mineral Composition 1. **What are the main groups/families of igneous rocks according to their mineral composition (% quartz / % mafic minerals)?** #### Table of Igneous Rock Classification | Name of the group/family | % Quartz/% Mafic | Names of typical minerals | |--------------------------|----------------|--------------------------| | 1. | | | | | | | | 2. | | | | | | | | 3. | | | | | | | | 4. | | | | | | | #### Explanation: - **Name of the group/family**: This section requires identifying igneous rock groups or families based on their mineral makeup. - **% Quartz/% Mafic**: This column is for the percentage composition of quartz relative to mafic minerals for each rock group. - **Names of typical minerals**: Here, you list common minerals found within each group or family of igneous rocks. This format helps in understanding the categorization of igneous rocks by examining their mineral percentages and typical mineral content.
Transcribed Image Text:### Classification of Igneous Rocks Based on Mineral Composition 1. **What are the main groups/families of igneous rocks according to their mineral composition (% quartz / % mafic minerals)?** #### Table of Igneous Rock Classification | Name of the group/family | % Quartz/% Mafic | Names of typical minerals | |--------------------------|----------------|--------------------------| | 1. | | | | | | | | 2. | | | | | | | | 3. | | | | | | | | 4. | | | | | | | #### Explanation: - **Name of the group/family**: This section requires identifying igneous rock groups or families based on their mineral makeup. - **% Quartz/% Mafic**: This column is for the percentage composition of quartz relative to mafic minerals for each rock group. - **Names of typical minerals**: Here, you list common minerals found within each group or family of igneous rocks. This format helps in understanding the categorization of igneous rocks by examining their mineral percentages and typical mineral content.
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