Tatehira mine, Kumaishi, Yakumo, Futami District, Oshima Subprefecture, Hokkaidō Prefecture, Japan
Brown crystal prism sections of kanoite, in pyroxmangite-cummingtonite manganese ore. S130-34 2 cm crystals. Excalibur Mineral specimen.
© 2008, JGW
A slice of manganese ore consists of pyroxmangite (pink) and kanoite-containing band (light-brown). National Science Museum (Japan) collection #NSM-M21331 (remaining half piece of type specimen) width: 4.5 cm
© R. Tanaka
0.8 cm crystals in matrix. S338-02 Excalibur Mineral specimen.
Shojingawa mine, Nanae, Kameda District, Oshima Subprefecture, Hokkaidō Prefecture, Japan
65x45x40mm overall size. The yellow micro crystals is FerriCopiapite. It seems that the brown part includes Romerite.
© Y.Okazaki
Yagumo mine, Yakumo, Futami District, Oshima Subprefecture, Hokkaidō Prefecture, Japan
Perfect Goethite caps on drusy Quartz, self-collected in November 2010 at Yakumo from a large body of drusy quartz inside a massive landslide. FOV : 3 cm
© Michael Meder
Shiriuchi river alluvials, Shiriuchi, Kamiiso District, Oshima Subprefecture, Hokkaidō Prefecture, Japan
Flattened gold nuggets, 3.5mm in size, panned from Shiriuchi river.
© Alfredo Petrov