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 Time
Minerals by PropertiesMinerals by ChemistryAdvanced 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 Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Biotite from
Great Hill cobalt mines, Cobalt, East Hampton (Chatham), Middlesex County, Connecticut, USA


Locality type:Mine
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Comments:A component of the host rocks at Robert's Lode.
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Very common
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Great Hill cobalt mines, Cobalt, East Hampton (Chatham), Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:102034
Long-form Identifier:1:3:102034:2
GUID (UUID V4):fdf657d9-5ca2-4be3-a0c6-8fed885a7c5d
Nearest other occurrences of Biotite
5.6km (3.5 miles) Linkpot cut, Airline Railroad, East Hampton (Chatham), Middlesex County, Connecticut, USA
5.6km (3.5 miles) Worth and Selden Quarries (Victoria Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA
7.3km (4.5 miles) Bailey prospect, East Hampton (Chatham), Middlesex County, Connecticut, USA
8.5km (5.3 miles) Lyman Viaduct at Dickinson Creek, Westchester, Colchester, New London County, Connecticut, USA
11.1km (6.9 miles) John Salak Quarry, Haddam, Middlesex County, Connecticut, USA
12.2km (7.6 miles) Timms Hill (Tim's Hill; Iolite Hill), Haddam, Middlesex County, Connecticut, USA
12.3km (7.6 miles) Jail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA
12.3km (7.6 miles) Arnold Granite Quarry (General Brainerd Quarry; Great Hill Quarry; Hazelton Quarry; Haddam Quarry; Brookes Quarry), Haddam, Middlesex County, Connecticut, USA
13.6km (8.5 miles) State Route 9 Interchange 13 - Beaver Meadow Road, Haddam, Middlesex County, Connecticut, USA
14.9km (9.2 miles) State Route 9 rock cuts, Haddam, Middlesex County, Connecticut, USA
References
 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, 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.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: March 29, 2024 15:20:53
Go to top of page