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Otanibira quarry, Iodake (Iwodake; Ioudake), Satsuma-Ioujima (Satsuma-Iwojima; Iou island), Mishima village, Kagoshima Prefecture, Nansei Archipelago, Kyushu Region, Japani
Regional Level Types
Otanibira quarryQuarry
Iodake (Iwodake; Ioudake)- not defined -
Satsuma-Ioujima (Satsuma-Iwojima; Iou island)- not defined -
Mishima villageVillage
Kagoshima PrefecturePrefecture
Nansei Archipelago- not defined -
Kyushu RegionRegion

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Latitude & Longitude (WGS84): 30° 47' 26'' North , 130° 18' 18'' East
Latitude & Longitude (decimal): 30.79073,130.30514
GeoHash:G#: wvkxjjm31
Locality type:Quarry
Köppen climate type:Cfa : Humid subtropical climate

Quarry worked for altered silica rich volcanic rocks with up to 97% silica content. Operations closed due to economic reasons and adverse working conditions caused by acidic fumaroles.
Located at the south-eastern rim of Iodake crater, south of Iodake peak.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

3 valid minerals.

Detailed Mineral List:

Formula: SiO2
Description: Rock-forming microcrystalline mineral, in white, highly silicified altered rhyolite.
Reference: S. Hamasaki (2002) Earth Planets Space 54, 217-229.
Formula: S8
Description: Sulphur pseudomorph after feldspar phenocrysts in leached and highly silicified rocks. Also in low-temperature fumarole chimneys.
Reference: S. Hamasaki (2002) Earth Planets Space 54, 217-229.
Formula: SiO2
Description: Rock-forming microcrystalline mineral, in white, highly silicified altered rhyolite.
Reference: S. Hamasaki (2002) Earth Planets Space 54, 217-229.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Group 4 - Oxides and Hydroxides

List of minerals arranged by Dana 8th Edition classification

Semi-metals and non-metals
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si

List of minerals for each chemical element

O CristobaliteSiO2
O TridymiteSiO2
Si CristobaliteSiO2
Si TridymiteSiO2
S SulphurS8

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