Hydrohetaerolite from Maruyama mine, Hokkaido, Japan
1982 Volume 77 Issue 8 Pages 284-289
Details
1982 Volume 77 Issue 8 Pages 284-289
Hydrohetaerolite, Zn2Mn4O8. H2O, was found in the oxidation zone of Maruyama copper-lead-zinc-manganese mine, southwestern Hokkaido. This is the second occurrence reported in Japan.
The mineral is brownish black. X-ray powder diffraction pattern shows that it is tetragonal with a0 5.72, c0 9.09Å, and space group I41/amd. Wet chemical analysis gives an empirical formula of (Zn1.62Mg0.56)2.18Mn3.88O8.00• 1.13H2O.
The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists
