One day field trip. September, 3rd (Friday)

Duration: 7 a.m. – 7 p.m. ( can be changed depends of traffic)
Starts: meeting point at 7 a.m. infront of the venue
Price include: bus transfer, snacks and refreshments in the bus, lunch, guide

Programme: KGHM Polska Miedź S.A. (Kombinat Górniczo-Hutniczy Miedzi), commonly known as KGHM, is a Polish multinational corporation that employs around 34,000 people around the world and has been a major copper and silver producer for more than 50 years. As of 2015, Poland ranked second and fifth among the countries holding the largest anticipated economic resources of silver and copper, respectively. Moreover, Poland is a leading producer of electrolytic copper and the leader of silver production. KGHM mines are located in the Lower Silesian Voivodeship. They are Sieroszowice, Polkowice, and Rudna Mine. Oxidation of the Kupferschiefer as an epigenetic phenomena.The oxidized zones reveal low concentrations of simple copper sulphides with the dominating chalcopyrite accompanied by bornite, pyrite, covellite, galena, clausthalite, chalcocite, digenite, spioncopite, geerite, native Au, electrum, tetraauricupride, naumannite, native Pb, Pd-arsenides and minerals of mixed composition: Au-Ag-Pb-Bi-Se-Te, Au-Ag-Pb-Te, Bi-Cu, Bi-Pd and Pd-As-O. Most important are natural alloys of precious metals, Pd-arsenides and oxidized phases (mostly Pd ones), which strongly influence the effectiveness of froth flotation. Precious metals form several parageneses: i – clausthalite – native Pb – electrum – AuPb2, ii – Pt-native Au – native Pd – sobolevskite – native Pb, iii – native Au – haematite – bornite – minerals of covellite-chalcocite group, iiii – electrum – tetraauricupride – chalcocite, iiiii – electrum – Pd-arsenides – tellurides – selenides – BiPd and CuBi natural alloys – Pd-oxides. Moreover, the modern participation in the mine water forms world-wide class gypsum crystals. They are full of inclusions (e.g. atacamite, paraatacamite, geothite, limonite), which make them colourful.

After visiting the mine, all participants will have opportunity to visit local mineral collectors, which will show and offer some typical and rare minerals connected with the Kupferschiefer strata.

Min. participants: 12

Max. participants: 24