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Nakano Island, Tokara Archipelago, Kagoshima Prefecture, Nansei Archipelago, Kyushu Region, Japan

Sulphur
Nakano Island, Tokara Archipelago, Kagoshima Prefecture, Nansei Archipelago, Kyushu Region, Japan

Photo: alfredo petrov

Latitude: 29°51'42"N
Longitude: 129°51'37"E

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979m high stratovolcano with numerous active fumaroles in the crater. Composed mainly of pyroxene andesites, sometimes olivine-bearing, with lesser amounts of hornblende dacites. Ruins of abandoned sulfur-mining operations visible in the crater, where liquid sulfur is sometimes erupted, and fumarolic sulfur crystals are still being deposited in rock fissures and inside metal pipe trash. Some plagioclase phenocrysts contain copper sulfide inclusions, possibly derived from a copper deposit in the wall rock of the magma chamber (T. Chiba, 1989).

Mineral List

Albite
var: Andesine
Anorthite
'Clinopyroxene Subgroup'

Enstatite
Forsterite
Ilmenite

Magnesiohornblende
Magnetite
Sulphur

9 entries listed. 7 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 5th Apr 2012 14:30:09