Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Tetradymite from Kawazu mine, Rendaiji, Shimoda City, Shizuoka Prefecture, Japan

A5W-6LJTetradymite Bi2Te2S , Pyrite FeS2 , Quartz SiO2

Multiple photos available
04631410017604737072883.jpg
Kawazu mine, Rendaiji, Shimoda City, Shizuoka Prefecture, Japan

Field of View: 0.2 mm

The microstructure of hemusite mineralization from Kawazu Mine.
Detail of a vein section illustrating extremely fine-grained aggregates of pyrite (Py - pale yellow) in association with tetradymite (Ttd – creamy white), in porous matrix of cracky quartz (medium grey, dark grey to black).

Vertically reflected plane polarized light digital image in air.
Please compare https://www.mindat.org/photo-1580039.html and the corresponding photomicrographs.
G. Grundmann collection and photo, homemade polished section.
Copyright: © Günter Grundmann, Detmold      Photo ID: 1580102     Uploaded by: Dr. Günter Grundmann   Approval date: 2025-10-14   View Count: 55   Approval status: Public galleries    Type: Photo - 6960 x 4640 pixels (32.3 Mpix)

J05-TP5Hemusite Cu6SnMoS8 , Tetradymite Bi2Te2S , Pyrite FeS2 , Covellite CuS , Chalcocite Cu2S , Quartz SiO2

Multiple photos available
05038530017604694449566.jpg
Kawazu mine, Rendaiji, Shimoda City, Shizuoka Prefecture, Japan

Field of View: 2 mm

The microstructure of hemusite mineralization from Kawazu Mine.
Detail of a vein section illustrating extremely fine-grained aggregates of pyrite (Py - pale yellow), covellite (Cv – blue), and chalcocite (Cc – light blue), with 0.001 mm to 0.2 mm spots of hemusite (Hem – light grey with violet tint) and tetradymite (Ttd – creamy white), in porous matrix of cracky quartz (medium grey, dark grey to black).

Vertically reflected plane polarized light digital image in air.
Please compare https://www.mindat.org/photo-1580039.html and the corresponding photomicrographs.
G. Grundmann collection and photo, homemade polished section.
Copyright: © Günter Grundmann, Detmold      Photo ID: 1580048     Uploaded by: Dr. Günter Grundmann   Approval date: 2025-10-14   View Count: 93   Approval status: Public galleries    Type: Photo - 6960 x 4640 pixels (32.3 Mpix)
 
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: November 2, 2026 07:27:14
Go to top of page