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Koryu mine (Kohryu mine), Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan i
Regional Level Types
Koryu mine (Kohryu mine) Mine
Chitose City City
Ishikari Subprefecture Subprefecture
Hokkaidō Prefecture Prefecture
Japan Country

Regional Level Types
Koryu mine (Kohryu mine)	Mine
Chitose City	City
Ishikari Subprefecture	Subprefecture
Hokkaidō Prefecture	Prefecture
Japan	Country

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Predictive Mineralogy

Pearceite

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Acanthite

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Pyrite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Pearceite

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Acanthite

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Pyrite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Pearceite

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Acanthite

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Latitude & Longitude (WGS84):

42° 48' 35'' North , 141° 13' 24'' East

Latitude & Longitude (decimal):

Type:

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Sapporo	1,883,027 (2018)	30.3km
Shiraoi	20,804 (2017)	30.7km
Kitahiroshima	62,370 (2017)	33.5km
Chitose	92,942 (2017)	35.0km
Tomakomai	174,806 (2017)	36.5km

Mindat Locality ID:

19214

Long-form identifier:

mindat:1:2:19214:6

GUID (UUID V4):

Abandoned gold-silver mine.
Epithermal gold-silver quartz vein deposit in an east-west shear zone within Miocene black mudstone.

A first mineralisation stage is characterized by manganocalcite, johannsenite and small amounts of ore minerals, whereas later stages are characterized by large amounts of ore minerals.
A gold mine.

Coordinates approximate only.

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.

ⓘ Gold

ⓘ Silver

Mineral List

24 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Mudstone

ⓘ Pyroclastic-rock

ⓘ Siltstone

Detailed Mineral List:

ⓘ Acanthite

Formula: Ag₂S

References:

Shimizu, Toru, Matsueda, Hiroharu, Ishiyama, Daizo, Matsubaya, Osamu (1998) Genesis of epithermal Au-Ag mineralization of the Koryu Mine, Hokkaido, Japan. Economic Geology, 93 (3) 303-325 doi:10.2113/gsecongeo.93.3.303

Yuningsih, Euis T., Matsueda, Hiroharu (2018) Study on the Cu-As-Sb-Ag-Bi-Pb-Te Sulfosalt Minerals from the Hydrothermal System of Southwestern Hokkaido, Japan. Resource Geology, 68 (3) 209-226 doi:10.1111/rge.12157

ⓘ Aguilarite

Formula: Ag₄SeS

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Aramayoite

Formula: Ag₃Sb₂(Bi,Sb)S₆

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Baumstarkite

Formula: Ag₃Sb₃S₆

References:

Kitakaze, A., Itoh, H., Komatsu, R., Higuchi, Y. (2012) Baumstarkite from the Koryu Mine, Hokkaido, Japan. The Canadian Mineralogist, 50 (1) 101-109 doi:10.3749/canmin.50.1.101

ⓘ Calcite

Formula: CaCO₃

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Calcite var. Manganese-bearing Calcite

Formula: (Ca,Mn)CO₃

References:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ 'Chlorite Group'

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ 'Clay minerals'

References:

ⓘ Fluorite

Formula: CaF₂

References:

Yasu Okazaki specimen

ⓘ Galena

Formula: PbS

References:

Mineral.Journ.Japan (1985) 12, 341-348

ⓘ Hematite

Formula: Fe₂O₃

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Hessite

Formula: Ag₂Te

References:

ⓘ Jalpaite

Formula: Ag₃CuS₂

References:

ⓘ Johannsenite

Formula: CaMn²⁺Si₂O₆

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ 'K Feldspar'

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi₃O₈

References:

Mineral.Journ.Japan (1985) 12, 341-348

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Mckinstryite

Formula: Ag_5-xCu_3+xS₄

References:

ⓘ Miargyrite

Formula: AgSbS₂

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Native Gold

Formula: Au

References:

Werszky, S. and Curto, C. (2014): Gold for Collectors.

ⓘ Native Gold var. Electrum

Formula: (Au,Ag)

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Pearceite

Formula: [Ag₆As₂S₇][Ag₉CuS₄]

References:

ⓘ Polybasite

Formula: [Ag₆Sb₂S₇][Ag₉CuS₄]

References:

ⓘ Proustite

Formula: Ag₃AsS₃

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Pyrargyrite

Formula: Ag₃SbS₃

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Pyrite

Formula: FeS₂

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Quartz

Formula: SiO₂

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ Sphalerite

Formula: ZnS

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ⓘ 'Tetrahedrite Subgroup'

Formula: Cu₆(Cu₄C²⁺₂)Sb₄S₁₂S

References:

ⓘ Vermiculite

Formula: Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O

References:

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

Gallery:

Ag₂Sⓘ Acanthite

Acanthite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Acanthite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Acanthite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Ag₂Teⓘ Hessite

Hessite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Hessite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Hessite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

(Au,Ag)ⓘ Native Gold var. Electrum

Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Ag₃SbS₃ⓘ Pyrargyrite

Pyrargyrite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Pyrargyrite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Pyrargyrite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

ZnSⓘ Sphalerite

Sphalerite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Sphalerite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

Sphalerite, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Gold var. Electrum	1.AA.05	(Au,Ag)
ⓘ		1.AA.05	Au
Group 2 - Sulphides and Sulfosalts
ⓘ	Acanthite	2.BA.35	Ag₂S
ⓘ	Mckinstryite	2.BA.40	Ag_5-xCu_3+xS₄
ⓘ	Jalpaite	2.BA.45	Ag₃CuS₂
ⓘ	Aguilarite	2.BA.55	Ag₄SeS
ⓘ	Hessite	2.BA.60	Ag₂Te
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Galena	2.CD.10	PbS
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Proustite	2.GA.05	Ag₃AsS₃
ⓘ	Pyrargyrite	2.GA.05	Ag₃SbS₃
ⓘ	'Tetrahedrite Subgroup'	2.GB.05	Cu₆(Cu₄C²⁺₂)Sb₄S₁₂S
ⓘ	Pearceite	2.GB.15	[Ag₆As₂S₇][Ag₉CuS₄]
ⓘ	Polybasite	2.GB.15	[Ag₆Sb₂S₇][Ag₉CuS₄]
ⓘ	Miargyrite	2.HA.10	AgSbS₂
ⓘ	Aramayoite	2.HA.25	Ag₃Sb₂(Bi,Sb)S₆
ⓘ	Baumstarkite	2.HA.25	Ag₃Sb₃S₆
Group 3 - Halides
ⓘ	Fluorite	3.AB.25	CaF₂
Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	var. Manganese-bearing Calcite	5.AB.05	(Ca,Mn)CO₃
Group 9 - Silicates
ⓘ	Johannsenite	9.DA.15	CaMn²⁺Si₂O₆
ⓘ	Vermiculite	9.EC.50	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Unclassified
ⓘ	'K Feldspar var. Adularia'	-	KAlSi₃O₈
ⓘ	'Chlorite Group'	-
ⓘ	'Clay minerals'	-
ⓘ	'K Feldspar'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
O	Oxygen
O	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
O	ⓘ Calcite	CaCO₃
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Johannsenite	CaMn²⁺Si₂O₆
O	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Quartz	SiO₂
O	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
F	Fluorine
F	ⓘ Fluorite	CaF₂
Mg	Magnesium
Mg	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Al	Aluminium
Al	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Al	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Si	Silicon
Si	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Si	ⓘ Johannsenite	CaMn²⁺Si₂O₆
Si	ⓘ Quartz	SiO₂
Si	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
S	Sulfur
S	ⓘ Acanthite	Ag₂S
S	ⓘ Aguilarite	Ag₄SeS
S	ⓘ Aramayoite	Ag₃Sb₂(Bi,Sb)S₆
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Galena	PbS
S	ⓘ Jalpaite	Ag₃CuS₂
S	ⓘ Mckinstryite	Ag_5-xCu_3+xS₄
S	ⓘ Miargyrite	AgSbS₂
S	ⓘ Pearceite	[Ag₆As₂S₇][Ag₉CuS₄]
S	ⓘ Polybasite	[Ag₆Sb₂S₇][Ag₉CuS₄]
S	ⓘ Proustite	Ag₃AsS₃
S	ⓘ Pyrargyrite	Ag₃SbS₃
S	ⓘ Pyrite	FeS₂
S	ⓘ Sphalerite	ZnS
S	ⓘ Tetrahedrite Subgroup	Cu₆(Cu₄C₂²⁺)Sb₄S₁₂S
S	ⓘ Baumstarkite	Ag₃Sb₃S₆
K	Potassium
K	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Fluorite	CaF₂
Ca	ⓘ Johannsenite	CaMn²⁺Si₂O₆
Ca	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
Mn	Manganese
Mn	ⓘ Johannsenite	CaMn²⁺Si₂O₆
Mn	ⓘ Calcite var. Manganese-bearing Calcite	(Ca,Mn)CO₃
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ · 8H₂O
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Jalpaite	Ag₃CuS₂
Cu	ⓘ Mckinstryite	Ag_5-xCu_3+xS₄
Cu	ⓘ Pearceite	[Ag₆As₂S₇][Ag₉CuS₄]
Cu	ⓘ Polybasite	[Ag₆Sb₂S₇][Ag₉CuS₄]
Cu	ⓘ Tetrahedrite Subgroup	Cu₆(Cu₄C₂²⁺)Sb₄S₁₂S
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS
As	Arsenic
As	ⓘ Pearceite	[Ag₆As₂S₇][Ag₉CuS₄]
As	ⓘ Proustite	Ag₃AsS₃
Se	Selenium
Se	ⓘ Aguilarite	Ag₄SeS
Ag	Silver
Ag	ⓘ Acanthite	Ag₂S
Ag	ⓘ Aguilarite	Ag₄SeS
Ag	ⓘ Aramayoite	Ag₃Sb₂(Bi,Sb)S₆
Ag	ⓘ Native Gold var. Electrum	(Au,Ag)
Ag	ⓘ Hessite	Ag₂Te
Ag	ⓘ Jalpaite	Ag₃CuS₂
Ag	ⓘ Mckinstryite	Ag_5-xCu_3+xS₄
Ag	ⓘ Miargyrite	AgSbS₂
Ag	ⓘ Pearceite	[Ag₆As₂S₇][Ag₉CuS₄]
Ag	ⓘ Polybasite	[Ag₆Sb₂S₇][Ag₉CuS₄]
Ag	ⓘ Proustite	Ag₃AsS₃
Ag	ⓘ Pyrargyrite	Ag₃SbS₃
Ag	ⓘ Baumstarkite	Ag₃Sb₃S₆
Sb	Antimony
Sb	ⓘ Aramayoite	Ag₃Sb₂(Bi,Sb)S₆
Sb	ⓘ Miargyrite	AgSbS₂
Sb	ⓘ Polybasite	[Ag₆Sb₂S₇][Ag₉CuS₄]
Sb	ⓘ Pyrargyrite	Ag₃SbS₃
Sb	ⓘ Tetrahedrite Subgroup	Cu₆(Cu₄C₂²⁺)Sb₄S₁₂S
Sb	ⓘ Baumstarkite	Ag₃Sb₃S₆
Te	Tellurium
Te	ⓘ Hessite	Ag₂Te
Au	Gold
Au	ⓘ Native Gold var. Electrum	(Au,Ag)
Au	ⓘ Native Gold	Au
Pb	Lead
Pb	ⓘ Galena	PbS
Bi	Bismuth
Bi	ⓘ Aramayoite	Ag₃Sb₂(Bi,Sb)S₆

Other Regions, Features and Areas containing this locality

AsiaContinent

Eurasian Plate

North Japan ArcVolcanic Arc

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

Shimizu, T. Evolution of subaerial magmatic-hydrothermal systems: A comparative study between Koryu Au-Ag deposit and Toyoha polymetallic deposit at Sapporo-Iwanai district, Hokkaido, Japan. AUSIMM

SUGAKI, Asahiko, KITAKAZE, Arashi, ISOBE, Kiyoshi (1985) Johannsenite from the Koryu mine, Hokkaido, Japan. Mineralogical Journal, 12 (7) 341-348 doi:10.2465/minerj.12.341

ONO, Shuji, SATO, Juichi (1995) Fluid inclusions in gold-silver-quartz veins from the Koryu mine, Hokkaido, Japan. Journal of Mineralogy, Petrology and Economic Geology, 90 (6) 215-224 doi:10.2465/ganko.90.215

Kitakaze, A., Itoh, H., Komatsu, R., Higuchi, Y. (2012) Baumstarkite from the Koryu Mine, Hokkaido, Japan. The Canadian Mineralogist, 50 (1) 101-109 doi:10.3749/canmin.50.1.101

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