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

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 36° North , 138° East (est.)
Margin of Error:~14km
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate


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.

Regions containing this locality

Honshu Island, Japan

Island - 1,361 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Goethite
Formula: α-Fe3+O(OH)
Reference: Sakurai, K., Matsubara, S. & Kato, A. (1991): Tinticite from the Suwa mine, Chino City, Nagano Prefecture, Japan. Mineralogical Journal 15, 261-267.
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan); Sakurai, K., Matsubara, S. & Kato, A. (1991): Tinticite from the Suwa mine, Chino City, Nagano Prefecture, Japan. Mineralogical Journal 15, 261-267.
Koninckite
Formula: Fe3+PO4 · 3H2O
Reference: 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 et al (1991) Mineralogical Journal, 15, 261-267.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Alfredo Petrov collection.
Opal
Formula: SiO2 · nH2O
Reference: H. Minato (1953) Koubutsugaku Zasshi, 1, #2, 67
Phosphosiderite
Formula: FePO4 · 2H2O
Reference: Sakurai, K. (1986) Chigaku Kenkyu, 37, 137-145.
Strengite
Formula: FePO4 · 2H2O
Reference: Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan); Sakurai, K., Matsubara, S. & Kato, A. (1991): Tinticite from the Suwa mine, Chino City, Nagano Prefecture, Japan. Mineralogical Journal 15, 261-267.
Tinticite
Formula: Fe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
Reference: Sakurai, K., Matsubara, S. & Kato, A. (1991): Tinticite from the Suwa mine, Chino City, Nagano Prefecture, Japan. Mineralogical Journal 15, 261-267.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Goethite'4.00.α-Fe3+O(OH)
'Opal'4.DA.10SiO2 · nH2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Jarosite'7.BC.10KFe3+ 3(SO4)2(OH)6
Group 8 - Phosphates, Arsenates and Vanadates
'Cacoxenite'8.DC.40Fe3+24AlO6(PO4)17(OH)12 · 75H2O
'Koninckite'8.CE.55Fe3+PO4 · 3H2O
'Phosphosiderite'8.CD.05FePO4 · 2H2O
'Strengite'8.CD.10FePO4 · 2H2O
'Tinticite'8.DC.32Fe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
Unclassified Minerals, Rocks, etc.
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Koninckite40.4.2.1Fe3+PO4 · 3H2O
Phosphosiderite40.4.3.2FePO4 · 2H2O
Strengite40.4.1.2FePO4 · 2H2O
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)4(XO4)3Zq·xH2O
Tinticite42.12.4.1Fe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
Miscellaneous
Cacoxenite42.13.5.1Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Rocks, etc.
'Limonite'-(Fe,O,OH,H2O)

List of minerals for each chemical element

HHydrogen
H CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
H Goethiteα-Fe3+O(OH)
H JarositeKFe3+ 3(SO4)2(OH)6
H KoninckiteFe3+PO4 · 3H2O
H Limonite(Fe,O,OH,H2O)
H OpalSiO2 · nH2O
H PhosphosideriteFePO4 · 2H2O
H StrengiteFePO4 · 2H2O
H TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
OOxygen
O CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
O Goethiteα-Fe3+O(OH)
O JarositeKFe3+ 3(SO4)2(OH)6
O KoninckiteFe3+PO4 · 3H2O
O Limonite(Fe,O,OH,H2O)
O OpalSiO2 · nH2O
O PhosphosideriteFePO4 · 2H2O
O StrengiteFePO4 · 2H2O
O TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
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 TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O
SSulfur
S JarositeKFe3+ 3(SO4)2(OH)6
KPotassium
K JarositeKFe3+ 3(SO4)2(OH)6
FeIron
Fe CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Fe Goethiteα-Fe3+O(OH)
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe KoninckiteFe3+PO4 · 3H2O
Fe Limonite(Fe,O,OH,H2O)
Fe PhosphosideriteFePO4 · 2H2O
Fe StrengiteFePO4 · 2H2O
Fe TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
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, K., Matsubara, S. & Kato, A. (1991): Tinticite from the Suwa mine, Chino City, Nagano Prefecture, Japan. Mineralogical Journal 15, 261-267.


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