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

Chlorite Group from
McDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA


Locality type:Quarry
Classification
Species:'Chlorite Group' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chlorite Group data
Locality Data:Click here to view McDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:73222
Long-form Identifier:1:3:73222:4
GUID (UUID V4):0
Nearest other occurrences of Chlorite Group
3.0km (1.8 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
3.6km (2.3 miles) ⓘF.J. Marley Quarry, Verona, Essex County, New Jersey, USA
4.1km (2.5 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
6.1km (3.8 miles) ⓘRiverside Quarry, Woodland Park, Passaic County, New Jersey, USA
7.0km (4.3 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
7.1km (4.4 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
9.1km (5.7 miles) ⓘMountain View, Wayne Township, Passaic County, New Jersey, USA
10.1km (6.3 miles) ⓘPine Brook, Montville Township, Morris County, New Jersey, USA
11.1km (6.9 miles) ⓘProspect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
13.8km (8.5 miles) ⓘHartshorn Quarry, Short Hills, Millburn, Essex County, New Jersey, USA
References
Mins. of NYC & Its Environs, NY Min. Club (1931), Manchester, J.G.
Peters, Joseph J. (1984) Triassic Traprock Minerals of New Jersey. Rocks & Minerals, 59 (4) 157-183 doi:10.1080/00357529.1984.11764472
 
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 12:42:09
Go to top of page