Rhodochrosite from Sunnyside Mine, Utah, USA

Rhodochrosite, 18.6 cm, from the Sunnyside mine, San Juan County, Colorado. Collected in 1969. Ex collection of Richard A. Kosnar (1946–2007). László Kupi photo.

Product details

SizeLarge Cabinet
Dimensions18.6 cm
Added on03/26/2026
Publications
  • Mineralogical Record The Kevin Brown Collection page 158
Current owner
Kevin Brown
Parker, TX
Member since 2026
Previous owners
DateCollectorAcquisition price
—Richard A. KosnarNot disclosed

Learn more

Rhodochrosite
Mineral guide
Learn about Rhodochrosite
deep pink to rich red manganese carbonate with vitreous crystals, diverse crystal habits, and renowned localities prized by collectors.
Rhodochrosite
Regional guide
Rhodochrosite from Sunnyside Mine
Sign in to contribute
Locality guide
Sunnyside Mine
Sunnyside Mine, USA – a San Juan locality famed for pastel rhodochrosite on quartz, green fluorite, and manganese minerals that define collector appeal.