Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery
bannerbannerbannerbannerbannerbanner

IMA 2010-006 = hermannroseite

Posted by Marco E. Ciriotti  
avatar IMA 2010-006 = hermannroseite
April 28, 2011 03:36AM
Reference:
▪ Schlüter, J., Pohl, D., Gebhard, G. (2011): The new mineral hermannroseite, CaCu(PO4,AsO4)(OH), the phosphate analogue of conichalcite, from Tsumeb, Namibia. Neues Jahrbuch für Mineralogie - Abhandlungen, 188, 135-140.

Abstract:
The new mineral hermannroseite (IMA-CNMNC No. 2010-006) has the chemical formula CaCu(PO4,AsO4)(OH). It is the phosphate analogue of conichalcite, CaCu(AsO4)(OH) and belongs to the adelite group where it represents the first phosphate end-member of this group. Hermannroseite is orthorhombic with space group P212121. X-ray powder diffraction studies gave a: 7.328(7), b: 9.123(7), c: 5.769(6) Å, V = 385.7(6) Å3, Z = 4. The strongest reflections in the X-ray powder diffraction data are as follows dobs. (Å) (I, hkl): 2.808 (100, 130), 2.571 (73, 112), 3.092 (63, 201), 5.710 (56, 110) and 4.057 (37, 111). Hermannroseite was found in the Tsumeb mine, Tsumeb, Namibia. With a mean grain size of 0.7 µm hermannroseite occurs within botryoidal aggegates and crusts of micro crystalline conichalcite in association with hydroxylapatite, whitlockite, pseudomalachite and amorphous manganese oxides/hydroxides.
Hermannroseite is translucent with a vitreous green colour. The calculated density is 4.08 g/cm3, the calculated mean refractive index is 1.77. Chemical analyses gave (wt.%): CaO 22.80, CuO 34.52, ZnO 0.58, P2O5 15.16, As2O5 21.88, V2O5 1.02, H2O(by difference) 4.04, sum 100.00 wt.%. The resulting empirical formula based on 5 anions is Ca0.96(Cu1.03Zn0.02)(P0.51As0.45V0.03) O3.94(OH)1.06.
Re: IMA 2010-006 = hermannroseite
April 28, 2011 04:02PM
    
I suspect the pure end-member will not be thermodynamically stable.
avatar Re: IMA 2010-006 = hermannroseite
March 09, 2012 11:17PM
    
Hey a mineral with my name yeah.

Herman
Author:

Your Email:


Subject:


Attachments:
  • Valid attachments: jpg, gif, png, pdf
  • No file can be larger than 1000 KB
  • 3 more file(s) can be attached to this message

Spam prevention:
Please, enter the code that you see below in the input field. This is for blocking bots that try to post this form automatically. If the code is hard to read, then just try to guess it right. If you enter the wrong code, a new image is created and you get another chance to enter it right.
CAPTCHA
Message:


bannerbannerbannerbannerbannerbanner
Mineral and/or Locality  
Copyright © mindat.org 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 30, 2015 07:58:28