What got my attention today was the latest Special Issue devoted to Nonsulfide Zn-Pb deposits in Ore Geology Reviews going into press now and ready for April 2008. Perhaps to the veterans of exploration the topics discussed are yesterday's news however, I have found my favorite reading for the next couple of weeks! Without going into the details let me recapitulate the topics discussed (I skipped the Intro):
- Stable isotope geochemistry of carbonate minerals in supergene oxidation zones of Zn–Pb deposits by Gilg et al. who present new equations for cerrusite and smithsonite oxygen isotopes and temperature fractionation by looking at deposits from Europe and Australia.
- Numerical simulation and a geochemical model of supergene carbonate-hosted non-sulphide zinc deposits by Reichert & Borg who offer a fascinating metallogentic modell for nonsulfide and discuss it in great detail with some excellent illustrations (one good image can say more than a 1000 words).
- Willemite (Zn2SiO4) as a possible Rb–Sr geochronometer for dating nonsulfide Zn–Pb mineralization: Examples from the Otavi Mountainland (Namibia) by Schneider et al. who demonstrate in this pilot study how the mineral willemite can be used as a geochronometer to directly date nonsulfide deposits and supplies good and reasonably accurate data.
- Mineralogical and geochemical characterization of nonsulfide Zn–Pb mineralization at Silvermines and Galmoy (Irish Midlands) by Balassone et al. and The “calamine” nonsulfide Zn–Pb deposits of Belgium: Petrographical, mineralogical and geochemical characterization by Coppola discuss the historic districts of Ireland and Belgium. Especially the later also features a number of great sample fotos.
UPDATE: Also read my more recent postings!