Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Margarite from
Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA


Locality type:Construction Site
Classification
Species:Margarite
Formula:CaAl2(Al2Si2O10)(OH)2
Comments:Soft but brittle, parallel fibrous zones within quartz-topaz-fluorite-muscovite veins, grades to micaceous to compact granular. Confirmed by Raman spectroscopy (2014) from identical veins as the neighboring Old Mine Park site.
Habit:micaeous to fibrous, compact
Colour:white, pale gray
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Raman Spectroscopy
Data
Mineral Data:Click here to view Margarite data
Locality Data:Click here to view Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:367176
Long-form Identifier:1:3:367176:4
GUID (UUID V4):0
Nearest other occurrences of Margarite
0.4km (0.2 miles) ⓘOld Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA
0.6km (0.4 miles) ⓘCorporate Drive, Long Hill, Trumbull, Fairfield County, Connecticut, USA
References
Jeremy Zolan
 
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: October 15, 2026 06:24:36
Go to top of page