McGuinnessite
sold- Locality
- Copper King Mine, Red Mountain, Mendocino Co., California, USA
- Minerals
- Mcguinnessite
- Dimensions
- 6 x 3.5 x 3.5 cm
- Size class
- Small Cabinet
- SID
- CT276
Mcguinnessite is a rare Mg-Cu carbonate, a member of Rosasite Group and is named after well-known California mineralogist, Al McGuinness. The matrix is richly covered with radial clusters and hemispheres of teal-blue McGuinnessite on most sides. Comes with an old Chuck Trantham label that indicates it was collected by Chuck and Al McGuinness in May 1982 and valued at $40 at that time.