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 Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
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 ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography
Cobaltite from
Great Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA
All Photos (50)Specimen Photos (19)Locality Photos (31)Photos by ColorGalleryPhoto StatisticsAdd Photo
| Locality type: | Mine | |
| Classification | ||
|---|---|---|
| Species: | Cobaltite | |
| Formula: | CoAsS | |
| Comments: | Reported by Parker Cleaveland in 1822. No one else appears to have found the mineral there. | |
| Confirmation | ||
| Validity: | Unconfirmed/Questioned | |
| Data | ||
| Mineral Data: | Click here to view Cobaltite data | |
| Locality Data: | Click here to view Great Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 102021 | |
| Long-form Identifier: | 1:3:102021:2 | |
| GUID (UUID V4): | 0 | |
| Nearest other occurrences of Cobaltite | ||
| 65.1km (40.5 miles) | ⓘOld Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA | |
| References | ||
Mindat.org is an outreach project of theHudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, 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 byJolyon Ralph.
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/vulnerabilityCurrent server date and time: November 30, 2025 03:15:10
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, 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 byJolyon Ralph.
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/vulnerabilityCurrent server date and time: November 30, 2025 03:15:10