“Hetaerolite (variety hydrohetaerolite) is the rare hydrated variety of this uncommon Zn-Mn oxide. It is very rare from the mines at renowned Bisbee, known only from the Campbell Mine. Lustrous metallic-gray bubbly botryoids totally cover the 3-dimensional vuggy face of this rich solid rarity. Undoubtedly older material, previously in the W. Simpson Collection; later to the Dennis Mullane Bisbee Collection, with his 1960s to 1970s label. Probable ID was given us by the folks at the University of Arizona Museum and by Les Presmyk, a noted Arizona specialist. It could be hetaerolite mixed with hematite, as well. Very rare material from the 1900 Level of the Campbell Mine.”

“Hetaerolite (variety hydrohetaerolite) is the rare hydrated variety of this uncommon Zn-Mn oxide. It is very rare from the mines at renowned Bisbee, known only from the Campbell Mine. Lustrous metallic-gray bubbly botryoids totally cover the 3-dimensional vuggy face of this rich solid rarity. Undoubtedly older material, previously in the W. Simpson Collection; later to the Dennis Mullane Bisbee Collection, with his 1960s to 1970s label. Probable ID was given us by the folks at the University of Arizona Museum and by Les Presmyk, a noted Arizona specialist. It could be hetaerolite mixed with hematite, as well. Very rare material from the 1900 Level of the Campbell Mine.”

“Hetaerolite (variety hydrohetaerolite) is the rare hydrated variety of this uncommon Zn-Mn oxide. It is very rare from the mines at renowned Bisbee, known only from the Campbell Mine. Lustrous metallic-gray bubbly botryoids totally cover the 3-dimensional vuggy face of this rich solid rarity. Undoubtedly older material, previously in the W. Simpson Collection; later to the Dennis Mullane Bisbee Collection, with his 1960s to 1970s label. Probable ID was given us by the folks at the University of Arizona Museum and by Les Presmyk, a noted Arizona specialist. It could be hetaerolite mixed with hematite, as well. Very rare material from the 1900 Level of the Campbell Mine.”