A few fun mineral photos

Although I have been working in the oil exploration buisness for some 25+ years, I still recall my background and studies in igneous and metamorphic petrology with fondness. A "hard-rock" geologist to the bitter end!
For those interested in the bitter detail on the petrology and origin of Gneiss and associated rocks, at least from one specific ancient locality, see my
Master's Thesis....
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