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Sulfidation in Epithermal Deposits

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Questions and Answers

What type of rock are pegmatites?

igneous

What are some rare metals associated with pegmatites?

Li, Be, Nb, Ta, Sn, U

What is the central process of rare earth element (REE) enrichment in pegmatites?

melt fractionation

What is the characteristic size of crystals in pegmatites?

several centimeters to meters Signup and view all the answers

What is liquid immiscibility in the context of magma chambers?

Different liquid phases that do not mix and have distinct chemical compositions and properties. Signup and view all the answers

Give an example of a magmatic segregation deposit and list the elements it contains.

The Bushveld Complex in South Africa, which contains platinum group elements, chromium, and vanadium. Signup and view all the answers

How can magmatic segregation lead to the formation of mineral deposits?

By concentrating certain elements in specific liquid phases and forming different mineral assemblages. Signup and view all the answers

What are the two types of sulfidation deposits based on the amount of sulfide minerals present?

High-sulfidation and low-sulfidation Signup and view all the answers

Where are high-sulfidation deposits typically formed?

In volcanic environments Signup and view all the answers

What metals are commonly found in high-sulfidation deposits?

Gold, silver, copper, zinc, lead, and mercury Signup and view all the answers

In what type of areas are low-sulfidation deposits typically formed?

In areas of less intense volcanic activity, such as in the upper levels of epithermal systems Signup and view all the answers