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(d) Using the quadrilateral diagrams given below, give the names and formulae of the end- member pyroxenes and amphiboles (labeled A, B, C, D, E, F, G, and H). The compositional fields for high-Ca and for low-Ca versions of both groups have been drawn for you. (e) By comparing chemistry, name one pyroxene-amphibole pair that might coexist in the same igneous or metamorphic rock. ( C B 'D 10k G Actinolite Molecular percentage F H

(d) Using the quadrilateral diagrams given below, give the names and formulae of the end- member pyroxenes and amphiboles (labeled A, B, C, D, E, F, G, and H). The compositional fields for high-Ca and for low-Ca versions of both groups have been drawn for you. (e) By comparing chemistry, name one pyroxene-amphibole pair that might coexist in the same igneous or metamorphic rock. ( C B 'D 10k G Actinolite Molecular percentage F H

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
Problem 1LR
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(d) Using the quadrilateral diagrams given below, give the names and formulae of the end- member pyroxenes and amphiboles (labeled A, B, C, D, E, F, G, and H). The compositional fields for high-Ca and for low-Ca versions of both groups have been drawn for you. (e) By comparing chemistry, name one pyroxene-amphibole pair that might coexist in the same igneous or metamorphic rock. ( 100 C Lok Orthopye senes B 90 G 60 Actinolite Molecular percentage F H
Transcribed Image Text:(d) Using the quadrilateral diagrams given below, give the names and formulae of the end- member pyroxenes and amphiboles (labeled A, B, C, D, E, F, G, and H). The compositional fields for high-Ca and for low-Ca versions of both groups have been drawn for you. (e) By comparing chemistry, name one pyroxene-amphibole pair that might coexist in the same igneous or metamorphic rock. ( 100 C Lok Orthopye senes B 90 G 60 Actinolite Molecular percentage F H
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