Sedimentary manganese ore, now metamorphosed and repeatedly folded (overturned synclines), hosted in Paleozoic chert. Spectroscopic study shows traces of V, Cr, Ni in many minerals here.
Ref.:
Watanabe, T. (1959) The minerals of the Noda-Tamagawa mine, Iwate prefecture, Japan; I. Notes on geology and paragenesis of minerals. Mineralogical Journal, 2, 6, 408-421.
Watanabe, T., et al. (1960) The minerals of the Noda-Tamagawa mine, Iwate Prefecture, Japan; II. Pyrochroite ore (Kimiman-koo) and its origin. Mineralogical Journal, 3, 1, 30-41.
Rocks & Min.: 59:216.
Note: Some of the minerals listed here are from the country rock, not the orebody.
Mineral List:92 entries listed. 74 valid minerals. 2 type localities (valid minerals).
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
