Miners Ridge, Red Mountain, Mendocino County
7.2 x 4.9 x 3.3 CM (cabinet)
new year 2021
A good sized blocky matrix with Mcguinnessite in rich crystalline crusts on several faces. Ex John Marshall collection, this is from the type locality area of Red Mountain. Close exam shows there are many tiny spheres and cups of blue green mineral, as well as some massive zones. A nice example of this unusual Copper mineral.