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
Search FormMinerals 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

Actinolite from
Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway


Locality type:Pegmatite
Classification
Species:Actinolite
Formula:◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Actinolite data
Locality Data:Click here to view Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway
Data Identifiers
Mindat Occurrence Record ID:558622
Long-form Identifier:1:3:558622:6
GUID (UUID V4):0
Nearest other occurrences of Actinolite
45.2km (28.1 miles) ⓘNordaberg Molybdenium Mines, Høydalsmo, Tokke, Telemark, Norway
45.4km (28.2 miles) ⓘRinde, Sannidal, Kragerø, Telemark, Norway
46.9km (29.1 miles) ⓘFossum Iron Mines, Skien, Telemark, Norway
47.5km (29.5 miles) ⓘFaråsen Mine, Skien, Telemark, Norway
50.8km (31.6 miles) ⓘValberg Quarry, Valberg, Kragerø, Telemark, Norway
51.3km (31.9 miles) ⓘRevstøyl asbestos locality, Tokke, Telemark, Norway
51.4km (31.9 miles) ⓘMoland Industrial Site, Akland, Risør, Agder, Norway
52.0km (32.3 miles) ⓘRavneberget Quarry, Søndeled, Risør, Agder, Norway
54.7km (34.0 miles) ⓘSelåsvann, Vegårshei, Agder, Norway
54.9km (34.1 miles) ⓘMule nursery home, Mule, Porsgrunn, Telemark, Norway
References
Raade, Gunnar, Kristiansen, Roy (2000) Mineralogy and geochemistry of the Heftetjern granite pegmatite, Tørdal: a progress report. Norsk Bergverksmuseum Skrift, 17. 19-25
 
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 21, 2026 01:53:18
Go to top of page