Formation of Sulphide Deposits in Igneous Rocks

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Questions and Answers

What is the main concept explained by Bowen's Reaction Series?

Crystallization order of minerals from a magma

How do magmatic deposits form?

From a cooling plutonic intrusion

Which minerals crystallize early in the magma chamber and form massive sulfide deposits?

Sulfide minerals

What is the characteristic of siderophile elements in terms of phase affinity?

<p>Fractionate into metallic phase</p> Signup and view all the answers

What type of elements have a pronounced affinity for the sulphide phase?

<p>Chalcophile elements</p> Signup and view all the answers

What are the relative abundances of selected metals in basalt, andesite, and rhyolite?

<p>Ni, Co, Pt, Au in basalt; Cu, Zn, Cr, V in andesite</p> Signup and view all the answers

What is the main characteristic of disseminated ore minerals?

<p>Scattered throughout the ore</p> Signup and view all the answers

Why are disseminated ore minerals considered valuable?

<p>Because they are very valuable</p> Signup and view all the answers

Give an example of disseminated ore minerals found in the PCMZ of Uitkomst Complex.

<p>BMS</p> Signup and view all the answers

Why are some disseminated minerals not mined even though they are present in the ore?

<p>The tenor is too low for it to be economically viable</p> Signup and view all the answers

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