- Mcguinnessite With Vuagnatite
- Small Cabinet, 6.7 x 4.1 x 2.0 cm
- Copper King Mine, Red Mountain District, Mendocino Co., California (TYPE LOCALITY)
- Ex. Martin Zinn; Al McGuinness
McGuinnessite is a very rare anhydrous copper carbonate, and this mine is the type locality. Marty got this specimen FROM Collector and dealer AL McGuinness himself! Interestingly the label says only Vuagnatite on it, allowing for the possiblity that Marty got this from him before the species in his honor was actually identified and published in 1981.