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Introduction to Mineralogy Dr. Tark Hamilton Chapter 5: Lecture 19 Minerals

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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 – PowerPoint PPT presentation

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Title: Introduction to Mineralogy Dr. Tark Hamilton Chapter 5: Lecture 19 Minerals


1
Introduction to MineralogyDr. Tark
HamiltonChapter 5 Lecture 19Minerals
Mineral Chemical Compositions
  • Camosun College GEOS 250
  • Lectures 930-1020 M T Th F300
  • Lab 930-1220 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-(FeOMnO))
Cc
Calcite group Calcite Magnesite Siderite Rhodochr
osite Smithsonite Hexagonal R3c
Tie Lines for coexisting phases
Dolomite group Dolomite Ankerite Kutnahorite Hexa
gonal 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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