'Placer deposits' presentation slideshows

Mesozoic Earth history

Chapter 14. Mesozoic Earth history. Nevadan Orogeny and Gold. Approximately 150 to 210 million years after the emplacement of massive plutons created the Sierra Nevada in the Nevadan orogeny gold was discovered at Sutter's Mill on the South Fork of the American River at Coloma, California

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Precious Metals and Gems

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Examples of Ore Forming Processes

Examples of Ore Forming Processes. Igneous: Intrusive. A. Separation of mineral by density Example chromite the ore mineral for Cr B. Separation of immiscible liquid Example: Ni and Cu C. Late Stage Crystallization Example: Cu and Au Hydrothermal Fluids Example: Au.

1.11k views • 30 slides

January 09, 2014

January 09, 2014. Agenda Roll New Seating Bathroom Passes PowerPoint titled: Stream and River Deposits Possible Video. Subject Area: Stream and River Deposits EQ: How does a river or stream system constantly change over time? Questions:

186 views • 17 slides

Origin of Mineral Deposits

A mineral deposit is a volume of rock enriched in one or more mineral s. In this sense a mineral refers to a useful material, a definition that is different from the way we defined a mineral earlier in this unit .

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CH 7 Resources and Energy

241 views • 9 slides

Stream and River Deposits

272 views • 8 slides