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Results tagged with petrography
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user 2570
Petrography is the science of observing and interpreting textural relationships of minerals and other features in rocks as observed through thin sections using an optical microscope.
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Identifying trichroic crystal systems
An unknown mineral shows three distinct pleochroic colours. Explain what observations you need to make in order to decide which crystal system it belongs to.
If it has three pleochroic colours th …
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