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Rocks and Minerals seen through the Petrological Microscope
Normal Light
Polarised Light
(Scale: Each image approx. 0.75 mm across)
Quartz and Chlorite. Homestake Gold Mine, Deadwood, South Dakota.Quartz with green Chlorite all around.The opaque mineral upper right is Arsenopyrite which contains the Gold. Black circle near top centre is accidental air bubble in slide.
