FCGS Newsletter - October 2015

Newsletter Summary

Jonathan Moore describes the history and geology of Creede’s mining district. Epithermal veins, first prospected in 1876, led to major discoveries including Nicholas Creede’s Holy Moses claim, sparking an 1890 boom and over a century of Ag Pb Zn production. Mineralization formed along graben faults within the Bachelor caldera, producing rich low sulfide veins of quartz, barite, and rhodochrosite. In his Prez Sez column, President John Youle reflects on scientific progress through “biffing it,” urging members to embrace hard falls as part of good science.