Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Electrum from
Koryu mine (Kohryu mine), Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan


06960880017272035549859.jpg
Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
04811230017272035561702.jpg
Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
06960880017272035549859.jpg
Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
04811230017272035561702.jpg
Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
06960880017272035549859.jpg
Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
04811230017272035561702.jpg
Electrum, etc.

Koryu mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
Locality type:Mine
Classification
Species:Native Gold var: Electrum
Formula:(Au,Ag)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz5
Galena4
Pyrite4
Aguilarite3
Sphalerite2
Chalcopyrite1
Hessite1
Acanthite1
Pyrargyrite1
Data
Mineral Data:Click here to view Electrum data
Locality Data:Click here to view Koryu mine (Kohryu mine), Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:292857
Long-form Identifier:1:3:292857:9
GUID (UUID V4):0
Nearest other occurrences of Electrum
10.0km (6.2 miles) ⓘChitose mine, Chitose City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
24.1km (15.0 miles) ⓘToyoha Mine, Minami-ku, Sapporo City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
31.4km (19.5 miles) ⓘTeine Mine, Sapporo City, Ishikari Subprefecture, Hokkaidō Prefecture, Japan
32.8km (20.4 miles) ⓘTodoroki mine, Yoichi District, Shiribeshi Subprefecture, Hokkaidō Prefecture, Japan
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
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
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 3, 2026 00:50:50
Go to top of page