digital presentaion

ROCKS ALL DAY, EVERY DAYROCKS ALL DAY, EVERY DAY

Figure 1. Rock Saw (side view)

Figure 2. Me using the rock saw taking necessary safety precautions

Figure 3. Rock saw front view

Figure 4a. Hillquist thin section grinding Machine using the right side to frost the slide

Figure 5. Epoxy station

Figure 4b.Using this side to cut the billet

Figure 4a. Using this side to sand down the thin section

Coarser Finer

Figure 6. Hand Sanding Station

Plagioclase

Hornblende

Quartz

Alkali-feldsparFigure 8. My rock in thin section focused on a plagioclase crystal

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are needed to see this picture.

My Rock

Figure 9. QAP diagram

Oscillatory Zoning Oscillatory Zoning in plagioclasein plagioclase Figure 8.

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are needed to see this picture.

Figure 10. Albite- Anorthite Solid Solution Phase Diagram with arrows showing direction of cooling

Figure 11. My rock in hand sample

References:

1) Winter, J.D., 2010, Principles of Igneous and Metamorphic Petrology: Upsaddle River,

New Jersey, Pearson Prentice Hall, 38 p.

2) Stamatelopoulou-Seymour, K., Vlassopoulos, D., Pearce, T.H., and Rice, C., 1990,

The record of magma chamber processes in plagioclase phenocrysts at Thera Volcano,

Aegean Volcanic Arc, Greece: Controbutions to Mineralogy and Petrology, v. 104, p. 73-84.

3) Bédard, L.P., 1996, Archean High-Mg Quartz-Monzodiorite Suite: A Re-evaluation of

the Parental Magma and Differentiation: The Journal of Geology, v. 104, p. 713-728.

4) Quartz, 2005, Minerals Zone [WWW Document]. URL: http://www.mineralszone.com

/minerals/quartz.html. Accessed April 19th, 2011.

5) Figure 9: http://img.geocaching.com/cache/e8ccef23-2402-4613-a959-e42181

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6) Figure 10: http://www.tulane.edu/~sanelson/images/plagphasediagram.gif

Special Thanks to:

•Kit Price for letting me use her camera to take pictures

•Doctor Pollock for letting me use her microscope camera