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Camosun College GEOS 250 Lectures: 9:30-10:20 M T Th F300 Lab: 9:30-12:20 W F300

Introduction to Mineralogy Dr. Tark Hamilton Chapter 5: Lecture 19 Minerals & Mineral Chemical Compositions. Camosun College GEOS 250 Lectures: 9:30-10:20 M T Th F300 Lab: 9:30-12:20 W F300. Pyroxene Analysis (Augite). Diopside CaMgSi 2 O 6 (2/m) monoclinic Kunar, Afghanistan.

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Camosun College GEOS 250 Lectures: 9:30-10:20 M T Th F300 Lab: 9:30-12:20 W F300

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  1. Introduction to MineralogyDr. Tark HamiltonChapter 5: Lecture 19Minerals & Mineral Chemical Compositions Camosun College GEOS 250 Lectures: 9:30-10:20 M T Th F300 Lab: 9:30-12:20 W F300

  2. Pyroxene Analysis (Augite)

  3. Diopside CaMgSi2O6 (2/m) monoclinic Kunar, Afghanistan Fabreminerals

  4. Orthopyroxene & Olivine on 2 triangular diagrams (MgO-SiO2-FeO) Wt% oxides (Mg-Si-Fe) Atom% En Fs Fo Fa

  5. Pyroxene Triangle (En-Wo-Fs) Wo Salite Di Hd Augite Pigeonite En Fs Hypersthene

  6. Amphibole Analysis

  7. Basaltic Hornblende twin (100)

  8. Linear (Bar) Graphs of Composition

  9. Molecular % (MgO-SiO2-FeO) Tie lines Silica Pyroxene + Quartz “Silica Saturation fence” Pyroxene + Olivine Periclase Wustite

  10. Carbonate Triangle: Mol%(MgO-CaO-(FeO+MnO)) Cc Calcite group: Calcite Magnesite Siderite Rhodochrosite Smithsonite Hexagonal R3c Tie Lines for coexisting phases Dolomite group: Dolomite Ankerite Kutnahorite Hexagonal R 3 Ank Dol Mag Sid

  11. Rhodochrosite, Quartz & Tetrahedrite Sweethome Mine CO, Fabreminerals Kristalle & Crys Py Knut Eldjarn Stalactites, Catamarca Argentina

  12. Ternary Plot: Feldspar Composition Sanidine Solvus Alkali Feldspars Anorthoclase Plagioclase

  13. Blue Celsian BaAl2Si2O8Franklin NJ, Peter Cristofono 2008

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