Vote for your favorite mineral in #MinCup26! - Monazite-(Ce) vs. Andalusite
It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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

Prehnite from
Vergeletto Valley, Onsernone Valley, Centovalli, Locarno, Ticino, Switzerland


Locality type:Valley
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Epidote1
Heulandite Subgroup1
Chabazite1
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Vergeletto Valley, Onsernone Valley, Centovalli, Locarno, Ticino, Switzerland
Data Identifiers
Mindat Occurrence Record ID:854717
Long-form Identifier:1:3:854717:0
GUID (UUID V4):0
Nearest other occurrences of Prehnite
5.0km (3.1 miles) Pizzo Alzasca, Cevio, Vallemaggia, Ticino, Switzerland
7.4km (4.6 miles) Alpe di Caneto (Alpe Caneto), Re, Verbano-Cusio-Ossola Province, Piedmont, Italy
7.5km (4.7 miles) Alpe Marco inferiore, Rio Vasca, Craveggia, Verbano-Cusio-Ossola Province, Piedmont, Italy
7.5km (4.7 miles) Maurino Quarry, Cerentino, Vallemaggia, Ticino, Switzerland
8.3km (5.2 miles) Gneiss quarries, Riveo, Maggia, Vallemaggia, Ticino, Switzerland
10.3km (6.4 miles) Piano del Lavonchio (Piano dei Lavonchi), Rio Vasca, Craveggia, Verbano-Cusio-Ossola Province, Piedmont, Italy
15.8km (9.8 miles) Kighel Quarry (Antillone Quarry), Formazza gneiss quarries, Formazza, Verbano-Cusio-Ossola Province, Piedmont, Italy
16.1km (10.0 miles) Alpe Rosso, Orcesco, Druogno, Verbano-Cusio-Ossola Province, Piedmont, Italy
18.0km (11.2 miles) Rencio quarries, Crodo gneiss quarries, Crodo, Verbano-Cusio-Ossola Province, Piedmont, Italy
19.2km (11.9 miles) Pizzo Nona, Antoliva Valley, Druogno, Verbano-Cusio-Ossola Province, Piedmont, Italy
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 7, 2026 06:06:36
Go to top of page