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 Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography
╳Discussions
💬 Home🔎 Search📅 LatestGroups
EducationOpen discussion area.Fakes & FraudsOpen discussion area.Field CollectingOpen discussion area.FossilsOpen discussion area.Gems and GemologyOpen discussion area.GeneralOpen discussion area.How to ContributeOpen discussion area.Identity HelpOpen discussion area.Improving Mindat.orgOpen discussion area.LocalitiesOpen discussion area.Lost and Stolen SpecimensOpen discussion area.MarketplaceOpen discussion area.MeteoritesOpen discussion area.Mindat ProductsOpen discussion area.Mineral ExchangesOpen discussion area.Mineral PhotographyOpen discussion area.Mineral ShowsOpen discussion area.Mineralogical ClassificationOpen discussion area.Mineralogy CourseOpen discussion area.MineralsOpen discussion area.Minerals and MuseumsOpen discussion area.PhotosOpen discussion area.Techniques for CollectorsOpen discussion area.The Rock H. Currier Digital LibraryOpen discussion area.UV MineralsOpen discussion area.Recent Images in Discussions
Mineralogical Classificationlepidomelane
4th Apr 2005 19:20 UTCAlfredo
4th Apr 2005 20:03 UTCPeter A
Lepidomelane was (is) commonly used on the mica occuring in the nepheline-syenite pegmatites in Langesundsfjord/Larvik area, and as far as i know most of this mica is annite. Also the homepage of Alf Olav Larsen ( http://home.c2i.net/aolarsen/ ) does only list annite as occuring here, and he is one of the true experts of this area.
So i would conclude that lepidomelane should be regarded as a synonym of iron-rich biotite group minerals.
Regards
Peter A
4th Apr 2005 20:21 UTCDavid Von Bargen
4th Apr 2005 21:30 UTCAlfredo
4th Apr 2005 21:35 UTCDavid Von Bargen
26th May 2005 17:42 UTCAlfredo
26th May 2005 20:03 UTCE.A.J. Burke
The IMA-CNMMN, in its continuing care for nomenclature, has published in 1998 a nomenclature report on the mica minerals; it can be consulted on the IMA-CNMMN website.
In the report, the name 'lepidomelane' has been discredited. The name 'lepidomelane' has been used for several micas, namely for annite, siderophyllite, tetra-ferri-annite and biotite (the latter being a series name for annite, phlogopite and siderophyllite).
It is not a good idea to change 'lepidomelane' automatically in another name, as the same name has been used for different minerals in the past. One needs analyses to know what is being meant. Petrologists should be more careful in their use of mineral names, but what can one do?
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, 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.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 23, 2024 22:32:12
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, 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.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 23, 2024 22:32:12