Filters: Date Range: {"choice":"year"} (X) > Tags: {"type":"label","name":"photomicrographs"} (X) > Categories: Image (X) > Types: OGC WMS Layer (X)

Filters Date Types (for Date Range) Types Map Service (1) OGC WFS Layer (1) OGC WMS Service (1) Contacts U.S. Geological Survey Lovering, Thomas Seward Tag Schemes http://www.sciencebase.gov/vocab/undefined/DenverHistoryPhotoLibrary/PhotoMedia (1) Tags (with Type=label ) photo print (1) photomicrographs (1) View Results as: JSON ATOM CSV

Photomicrograph of gold-tungsten ore from Keklonga mine. Boulder County, Colorado. 1932. Album caption and index card: Photomicrograph of gold-tungsten ore from Keklonga mine, Magnolia district. Sylvanite (s) in vuggy quartz (q3) which contains a little pyrite (py). Quartz (q3) and ferberite (fe) cut in early quartz. Boulder County, Colorado. Notes: Published as figure LXXIV-B in U.S.Geological Survey. Professional Paper 223. 1950. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Boulder County, Colorado, Keklonga mine, Lovering, T.S. Collection, Mills, Mines, Quarries, Photographers, All tags... Photomicrographs, photo print, Fewer tags