Marcasite, Quartz (Var: Chalcedony)
Nipomo, San Luis Obispo County, California, USA
Thin, polished slice of this classic material, with framboidal marcasite embedded in translucent chalcedony / agate. Some of the marcasite has altered to a softer, opaque white material, but appears stable within the slab.
Don Windeler collection, acquired 2019 from Bill Gaumer. According to Gaumer, this material was collected by his father ...
© DSW 2019