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Suwa mine, Chino City, Nagano Prefecture, Japani
Regional Level Types
Suwa mineMine
Chino CityCity
Nagano PrefecturePrefecture
JapanCountry

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Latitude & Longitude (WGS84):
36° North , 138° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~14km
GRN:
N25E80
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Mindat Locality ID:
64584
Long-form identifier:
mindat:1:2:64584:2
GUID (UUID V4):
0


A former iron mine (abandoned approximately in the 1950s) which worked a bed of Pleistocene limonite deposited by volcanogenic mineral springs in an old stream valley. Quite enriched in phosphates compared to other such sedimentary limonite ores.

Located about 7 km SSW of Mt. Tateshina.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


8 valid minerals.

Detailed Mineral List:

ⓘ Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Jarosite
Formula: KFe3+3(SO4)2(OH)6
ⓘ Koninckite
Formula: Fe3+PO4 · 3H2O
ⓘ 'Limonite'
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ Phosphosiderite
Formula: FePO4 · 2H2O
ⓘ Strengite
Formula: FePO4 · 2H2O
ⓘ Tinticite
Formula: Fe3+3(PO4)2(OH)3 · 3H2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘOpal4.DA.10SiO2 · nH2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘJarosite7.BC.10KFe3+3(SO4)2(OH)6
Group 8 - Phosphates, Arsenates and Vanadates
ⓘPhosphosiderite8.CD.05FePO4 · 2H2O
ⓘStrengite8.CD.10FePO4 · 2H2O
ⓘKoninckite8.CE.55Fe3+PO4 · 3H2O
ⓘTinticite8.DC.32Fe3+3(PO4)2(OH)3 · 3H2O
ⓘCacoxenite8.DC.40Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Unclassified
ⓘ'Limonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Hⓘ GoethiteFe3+O(OH)
Hⓘ JarositeKFe33+(SO4)2(OH)6
Hⓘ KoninckiteFe3+PO4 · 3H2O
Hⓘ OpalSiO2 · nH2O
Hⓘ PhosphosideriteFePO4 · 2H2O
Hⓘ StrengiteFePO4 · 2H2O
Hⓘ TinticiteFe33+(PO4)2(OH)3 · 3H2O
OOxygen
Oⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Oⓘ GoethiteFe3+O(OH)
Oⓘ JarositeKFe33+(SO4)2(OH)6
Oⓘ KoninckiteFe3+PO4 · 3H2O
Oⓘ OpalSiO2 · nH2O
Oⓘ PhosphosideriteFePO4 · 2H2O
Oⓘ StrengiteFePO4 · 2H2O
Oⓘ TinticiteFe33+(PO4)2(OH)3 · 3H2O
AlAluminium
Alⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
SiSilicon
Siⓘ OpalSiO2 · nH2O
PPhosphorus
Pⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Pⓘ KoninckiteFe3+PO4 · 3H2O
Pⓘ PhosphosideriteFePO4 · 2H2O
Pⓘ StrengiteFePO4 · 2H2O
Pⓘ TinticiteFe33+(PO4)2(OH)3 · 3H2O
SSulfur
Sⓘ JarositeKFe33+(SO4)2(OH)6
KPotassium
Kⓘ JarositeKFe33+(SO4)2(OH)6
FeIron
Feⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Feⓘ GoethiteFe3+O(OH)
Feⓘ JarositeKFe33+(SO4)2(OH)6
Feⓘ KoninckiteFe3+PO4 · 3H2O
Feⓘ PhosphosideriteFePO4 · 2H2O
Feⓘ StrengiteFePO4 · 2H2O
Feⓘ TinticiteFe33+(PO4)2(OH)3 · 3H2O

Other Regions, Features and Areas containing this locality

AsiaContinent
Eurasian Plate
Japan
Okhotsk PlateTectonic Plate

This page 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. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Kitahara, J. (1949). Geochemical study on the ore deposits of the Suwa Mine, Nagano Prefecture. The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 33(1), 18-26.
K. Sakurai, S. Matsubara & A. Kato (1987): Koninckite from Suwa Mine, Chino City, Nagano Prefecture, Japan. Bulletin of the National Science Museum, Series C (Geology & Paleontology), 13, 149–156
SAKURAI, Kin-ichi, MATSUBARA, Satoshi, KATO, Akira (1991) Tinticite from the Suwa mine, Chino City, Nagano Prefecture, Japan. Mineralogical Journal, 15 (6) 261-267 doi:10.2465/minerj.15.261
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