SUPPORT US. Covid-19 has significantly affected our fundraising. Please help!
Log InRegister
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 ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography


This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About WernerbauriteHide

Specific Gravity:
2.352 (Calculated)
Crystal System:
Prof. Dr. rer. nat. Werner H. Baur (b. 1931, Warsaw, Poland), Geological Sciences Department of the University of Illinois, Chicago from 1965 to 1986, in positions as Associate Professor, Professor, Department Head, and Associate Dean.
This page provides mineralogical data about Wernerbaurite.

Classification of WernerbauriteHide

IMA status notes:
Redefined by the IMA
Approval history:
Originally approved as a hydronium mineral (IMA 2012–064), later redefined as an ammonium-bearing decavanadate mineral (Proposal IMA 15-G).

Physical Properties of WernerbauriteHide

{100} and {010}
2.352 g/cm3 (Calculated)

Optical Data of WernerbauriteHide

Biaxial (-)
RI values:
nα = 1.745(3) nβ = 1.780(3) nγ = 1.795(3)
Measured: 66° (2), Calculated: 65.3°
Max Birefringence:
δ = 0.050
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
strong r >v
X, Z = yellow, Y = orange;
very strong dispersion produces anomalous red-orange and blue-green interference colors near the extinction positions

Chemical Properties of WernerbauriteHide


Crystallography of WernerbauriteHide

Crystal System:
Class (H-M):
1 - Pinacoidal
Space Group:
Cell Parameters:
a = 9.7212(6) Å, b = 10.2598(8) Å, c = 10.5928(8) Å
α = 89.999(6)°, β = 77.083(7)°, γ = 69.887(8)°
a:b:c = 0.948 : 1 : 1.032
Unit Cell V:
963.55 ų (Calculated from Unit Cell)

Crystal StructureHide

Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
CIF File    Best | x | y | z | a | b | c
Stop | Start
Console Off | On | Grey | Yellow
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0019898WernerbauriteKampf A R, Hughes J M, Marty J, Nash B (2013) Wernerbaurite, {[Ca(H2O)7]2(H2O)2(H3O)2}{V10O28}, and schindlerite, {[Na2(H2O)10](H3O)4}{V10O28}, the first hydronium-bearing decavanadate minerals The Canadian Mineralogist 51 297-3122013St. Jude mine, San Miguel County, Colorado, U.S.A.0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
10.32 Å(100)
9.64 Å(92)
8.88 Å(95)
8.10 Å(58)
6.881 Å(70)
6.031 Å(39)
3.028 Å(29)
2.842 Å(29)
From Type Description.

Type Occurrence of WernerbauriteHide

General Appearance of Type Material:
Tabular on {100} with stepped faces and square to octagonal outlines, up to about 1 mm in maximum dimension
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, Los Angeles, California, USA, catalogue numbers 64002, 64003 and 64004
Geological Setting of Type Material:
The oxidation of montroseite-corvusite assemblages in a moist environment.
Associated Minerals at Type Locality:

Synonyms of WernerbauriteHide

Fluorescence of WernerbauriteHide

Other InformationHide

dissolves instantly in cold, dilute HCl and slowly in water.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for WernerbauriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Hughes, J.M., Marty, J. & Nash, B. (2013) Wernerbaurite {[Ca(H2O)7]2(H2O)2(H3O)2}{V10O28}, and schindlerite, {[Na2(H2O)10](H3O)4}{V10O28}, the first hydronium-bearing decavanadate minerals. Canadian Mineralogist 51, 297-312.
Kampf, A.R., Hughes, J.M., Nash, B.P., Marty, J., Cooper, M.A., Hawthorne, F.C., Karpenko, V.Y., Pautov, L.A., Agakhanov, A.A. (2016): Revision of the formulas of wernerbaurite and schindlerite: ammonium- rather than hydronium-bearing decavanadate minerals. Canadian Mineralogist: 54: 555-558.

Internet Links for WernerbauriteHide

Localities for WernerbauriteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Colorado
    • San Miguel Co.
      • Slick Rock Mining District
Kampf, A. R., Plášil, J., Nash, B. P., & Marty, J. (2019). Ammoniomathesiusite, a new uranyl sulfate–vanadate mineral from the Burro mine, San Miguel County, Colorado, USA. Mineralogical Magazine, 83(1), 115-121.
Kampf, A.R., Hughes, J.M., Marty, J. and Nash, B. (2013) Wernerbaurite, IMA 2012-064. CNMNC Newsletter No. 15, February 2013, page 6; Mineralogical Magazine, 77, 1-12.
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2021, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us - Report a bug/vulnerability Current server date and time: April 16, 2021 17:45:32 Page generated: March 1, 2021 14:09:27
Go to top of page