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

Ferro-hornblende from
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA


Locality type:Quarry
Classification
Species:Ferro-hornblende
Formula:◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ferro-hornblende data
Locality Data:Click here to view Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:78700
Long-form Identifier:1:3:78700:2
GUID (UUID V4):0
Nearest other occurrences of Ferro-hornblende
11.4km (7.1 miles) ⓘRyerson de Bow Mine (Bishop Mine; Search Mine), Pompton Station, Riverdale, Morris County, New Jersey, USA
13.5km (8.4 miles) ⓘWanaque Mines (Wynokie Mines), Riverdale, Morris County, New Jersey, USA
17.0km (10.5 miles) ⓘBlue Mine, Ringwood, Passaic County, New Jersey, USA
17.6km (11.0 miles) ⓘLake Valhalla Quarry (Gordon's Crystalline Limestone Quarry), Montville Township, Morris County, New Jersey, USA
18.3km (11.4 miles) ⓘBush Mine, Ringwood, Passaic County, New Jersey, USA
18.7km (11.6 miles) ⓘMule Mine, Ringwood, Passaic County, New Jersey, USA
18.7km (11.6 miles) ⓘHard Mine, Ringwood, Passaic County, New Jersey, USA
18.7km (11.6 miles) ⓘCannon Mines, Ringwood, Passaic County, New Jersey, USA
20.0km (12.4 miles) ⓘInterstate 95 and George Washington Bridge Lower Level roadcut, Fort Lee, Bergen County, New Jersey, USA
21.8km (13.5 miles) ⓘTorne Quarry, Powerville, Boonton Township, Morris County, New Jersey, USA
References
NJ Geol. Survey Bull. #64, Trap Rock Mins of NJ, Mason, B. (1960)
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 15:49:31
Go to top of page