Vote for your favorite mineral in #MinCup26! - Cuprite vs. Orpiment
It's a fiery match of vibrant red Cuprite and just as saturated orange Orpiment battle for 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

Orthoclase from
Rockside Quarry, Mine Hill, Roxbury, Litchfield County, Connecticut, USA


Locality type:Quarry
Classification
Species:Orthoclase
Formula:K(AlSi3O8)
Comments:As a constituent of the gneiss.
Habit:anhedral
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Polarised-light microscopy
Data
Mineral Data:Click here to view Orthoclase data
Locality Data:Click here to view Rockside Quarry, Mine Hill, Roxbury, Litchfield County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:132120
Long-form Identifier:1:3:132120:3
GUID (UUID V4):0
Nearest other occurrences of Orthoclase
14.1km (8.8 miles) U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
16.2km (10.0 miles) Sky Ridge railroad cut, Hawleyville, Newtown, Fairfield County, Connecticut, USA
20.2km (12.6 miles) North Street mall, Danbury, Fairfield County, Connecticut, USA
22.0km (13.7 miles) Route 73 quarry, Waterbury, New Haven County, Connecticut, USA
29.4km (18.3 miles) Rock dump, Prospect, New Haven County, Connecticut, USA
38.1km (23.7 miles) Clover Hill Mine, Croton Falls, Somers Township, Westchester County, New York, USA
44.9km (27.9 miles) Shaft 7, Delaware Aqueduct, Town of Fishkill, Dutchess County, New York, USA
48.1km (29.9 miles) Bedford, Westchester County, New York, USA
49.4km (30.7 miles) Baylis Quarry (Bayliss Quarry), Bedford, Westchester County, New York, USA
55.3km (34.3 miles) West Point, Orange County, New York, USA
References
 
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 5, 2026 05:46:21
Go to top of page