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 ClassificationNews from Excalibur
29th Apr 2009 14:35 UTCArmand Dutroux
ARDENNITE-(V)- Sparone, Valle di Locana, Piemonte, Italy
This relatively NEW SPECIEs occurs as yellowish-orange to brownish elongated aggregates frozen in pinkish matrix, here from the TYPE locality, most accurately noted as "Rio dei Piane, Feilongo". IMA # 2005-037, the vanadium analog of the more common AsO4 ardennite. Only a few specimens, sizes from about 2cm to 3.5cm.
CRYPTOPHYLLITE- Tsentral'nyi Mine, Rasvumchoor Mt., Russia
This NEW SPECIES was discovered during XRD study on IMA #2008-062, and it forms colorless split or curved lamellae to 0.2mm, often as intergrowths with the aforementioned mineral, being both chemically and structurally related to it, although more uncommon at the locality. Both species represent a new structural type of phyllosilicate. Formula: KCa*5H2O - monoclinic. Associations include lamprophyllite, eudialite, K-feldspar, aegirine etc.. IMA #2008-061, from the TYPE (and only) locality, sizes 2.5cm to 4cm.
FLUORO-POTASSICHASTINGSITE- Greenwood Mine, Orange Co., New York
This NEW SPECIES occurs as brilliant, black aggregates richly comprising matrix, typically intergrown with minor granular magnetite. A fluorine-domiant Ca-Fe amphibole, IMA #2005-006, here from the TYPE locality for the species. Rich specimens accompanied by a copy of our analytical data, ranging in size from about 2cm to nearly 5cm across.
HYDROXYLWAGNERITE- Dora-Maira Massif, Cuneo, Piemonte, Italy
This relatively NEW SPECIES occurs as small, somewhat creamy-beige colored masses and aggregates scattered in a highly micaceous quartzite matrix, most with tiny pyrope masses as well. Formula: Mg2(PO4)(OH)-monoclinic. IMA #2004-009, from the TYPE locality, also more properly noted as "Brossasco, Vallone Giba, Varaita Valley" in the Dora-Maira massif. Specimens from about 3cm to nearly 6cm.
SHLYKOVITE- Tsentral'nyi Mine, Rasvumchorr Mt., Russia
Another NEW SPECIES from Khibiny, occurring as minute scaly lamellae to 0.5mm and as thinly fibrous aggregates of similar size in veinlets and cracks, typically greyish white to somewhat beige in color, all showing a pearly luster, associated with potassic feldspar, eudialyte, alkali amphibole, ilmenite and a potential host of other possibilities. Formula: KCa*3H2O, monoclinic. IMA #2008-062, a phyllosilicate representing a new structural type! From the TYPE and only locality, specimens (with arrows) from about 2cm to 5cm across.
Thanks!
29th Apr 2009 15:48 UTCAlfredo Petrov Manager
Hydroxylwagnerite now added (although I suppose it will soon become "wagnerite-(OH)", if not already). Well, that's the big advantage of an online database; we can change it any time, which can't be done when a name is "fossilized" in print on paper ;-))
29th Apr 2009 16:35 UTCMarco E. Ciriotti Manager
the name is hydroxylwagnerite.
Some data from Italian Type Minerals.
""Hydroxylwagnerite Mg2(PO4)(OH)
8.BB.10 c, a 9.646, b 12.7314, c 11.980 Å, β 108.38°, V 544.9 Å3, Z 16
Type locality:
Vallone di Gilba, Dora-Maira Massif, San Giacomo, Brossasco, Val Varaita, Cuneo,
Piemonte.
Name:
For its relationship with wagnerite, the F-dominant analogue. The root name is after
F.M. von Wagner (1768-1851), mining official at Munich (Germany).
Status:
Approved, IMA 2004-009.
Appearance:
Creamy white; vitreous (earthy); centimetric masses formed by anhedral grained crystals, at the type locality,
and aggregates, up to some millimeters, of more yellow-brown micro-lamellae at Case Ramello, Martiniana
Po, Dora Maira massif, Cuneo, Piemonte.
Occurrence and distribution:
Very rare mineral found within pyrope megablasts and as an accessory rock-forming mineral in pyrope-kyanite-
phengite quartzite occurring as lenses within metagranite in the ultrahigh-pressure (UHP, coesite bearing)
metamorphic unit.
Remarks:
Related to triplite and zwieselite. Hydroxylwagnerite is the OH isotype of the more common wagnerite,
Mg2(PO4)F, with which it forms a series, and it is the high-pressure trimorph of althausite and holtedahlite.
At the Dora Maira Massif an OH-bearing wagnerite phase is commonly associated to hydroxylwagnerite.
References:
Chopin, C., Leyx, C., Armbruster, T., Medenbach, O.: in preparation.""
29th Apr 2009 17:28 UTCAlfredo Petrov Manager
I think it's a pity that this is not accomplished in one decision for all applicable series, to avoid this current long-drawn-out process of achieving harmony by inconsistent decisions in bits and pieces.
29th Apr 2009 21:41 UTCMarco E. Ciriotti Manager
8th Mar 2012 07:59 UTCUwe Kolitsch Manager
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 19, 2024 20:58:28
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 19, 2024 20:58:28