McGuinnessite
at-auction$ 20
- Locality
- Copper King Mine, Red Mountain, Mendocino Co., California, USA
- Minerals
- Mcguinnessite
- Dimensions
- 4 x 2.2 x 1.5 cm
- Size class
- Miniature
- SID
- H972
Blue McGuinnessite on matrix. McGuinnessite is a rare carbonate named after the late California mineralogist and dealer Al McGuinness.