A mass of acicular metallic wires on quartz. Ex John Haupt. Width of view 5.5mm. Stack of 50 images. Click on the image below for a higher resolution version.
5747 Stibnite, Calcite, Jamesonite, Sombrerete Mine, Sombrerete, Sombrerete Municipality, Zacatecas, Mexico
Labelled as boulangerite, El Sombrette Mine, Durango. Likely jamesonite, and from the Sombrerete Mine, in Zacatecas, but close to the border with Durango. Ex John Lewis Collection.