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Metamorphic rocks of greenstone facies (phyllites) have been discovered quite recently in the Łysogóry region of the Holy Cross Mountains. The following minerals predominate in the mineral composition of these rocks: bright mica (sericite), quartz, chlorites, rutile, pyrophyllite, xenotime, pyrite, tourmaline, apatite and monacite, while chalcopyrite, sphalerite and galena are also present in mineral...