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About AnsermetiteHide

Stefan Ansermet
Mn2+(V2O6) · 4H2O
carmine red to wine red
Specific Gravity:
2.5 - 2.55
Crystal System:
Named in honor of Stefan Ansermet (b. 1964), mineralogist, associate researcher and photographer in the Geological State Museum of Lausanne, Switzerland. He is also a mineralogist for the Natural History Museum in Sion, Wallis, Switzerland, an occasional mining exploration prospector and author of the book 'Le Mont-Chemin – Mines et Minéraux du Valais'.
This page provides mineralogical data about Ansermetite.

Classification of AnsermetiteHide

Approval Year:

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
D : Inovanadates

Physical Properties of AnsermetiteHide

carmine red to wine red
on {110}
2.5 - 2.55 g/cm3 (Measured)    

Chemical Properties of AnsermetiteHide

Mn2+(V2O6) · 4H2O
IMA Formula:
Mn2+V5+2O6 · 4H2O

Crystallography of AnsermetiteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 13.17 Å, b = 10.13 Å, c = 6.983 Å
β = 111.57°
a:b:c = 1.3 : 1 : 0.689
Unit Cell V:
866.37 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
7.82 Å(100)
4.51 Å(30)
3.91 Å(30)
3.03 Å(70)

Type Occurrence of AnsermetiteHide

General Appearance of Type Material:
scaly crusts to 0.5 mm thickness, rarely minute wedge-shaped tabular crystals to 0.1 mm
Geological Setting of Type Material:
late-stage hydrothermal mineralizations in fissures of massive manganese ores
Associated Minerals at Type Locality:

Synonyms of AnsermetiteHide

Other Language Names for AnsermetiteHide

Simplified Chinese:水钒锰石
Traditional Chinese:水釩錳石

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Ansermetite associated with FianeliteMn2+2((V,As)2O7) · 2H2O
2 photos of Ansermetite associated with Ranciéite(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
1 photo of Ansermetite associated with PascoiteCa3(V10O28) · 17H2O
1 photo of Ansermetite associated with RhodoniteMn2+SiO3

Related Minerals - Nickel-Strunz GroupingHide

4.HD.05RossiteCa(VO3)2•4H2OTric. 1 : P1
4.HD.10MetarossiteCa(V2O6) · 2H2OTric. 1 : P1
4.HD.15MuniriteNaVO3 · 1.9H2OMon.
4.HD.25DickthomsseniteMg(V2O6) · 7H2OMon. 2/m : B2/b

Fluorescence of AnsermetiteHide

Other InformationHide

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 AnsermetiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Brugger, J., Berlepsch, P., Meisser, N., and Armbruster, T. (2003) Ansermetite, MnV2O6·4H2O, a new mineral species with V5+ in five-fold coordination from Val Ferrera, Eastern Swiss Alps. Canadian Mineralogist: 41: 1423-1431.

Internet Links for AnsermetiteHide

Localities for AnsermetiteHide

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.
  • Liguria
    • Genoa
      • Ne
SC-XRD 2012-02-28 M.E. Ciriotti - CrisDi - Turin University: CCD: 6.984(6), 10.127(11), 13.221(14), 111.55(10)
        • Reppia
          • Monte Copello
R. Bracco, C. Leporatti, U. Kolitsch and M. Ciuffardi (2006): Ansermetite: ancora una novità da Gambatesa. Micro 2006, no. 2, 29-32. (in Italian)
  • Saitama Prefecture
    • Hanno City
Yamada et al (2000) Koubutsu-Gakkai Kou’en-Youshi, 88
Switzerland (TL)
  • Grisons
    • Hinterrhein
      • Ferrera Valley
        • Ausserferrera
J. Brugger et al.: Can. Mineral. 41:1423-1431 (2003)
  • California
    • Trinity Co.
      • Coastal Range
        • Mad River Rock
Tony Kampf (PXRD analysis)
  • Colorado
    • Mesa Co.
      • Gateway
Kampf, A.R., Nash, B.P., Marty, J., Hughes, J.M. (2017) Mesaite, CaMn2+5(V2O7)3·12H2O, a new vanadate mineral from the Packrat mine, near Gateway, Mesa County, Colorado, USA. Mineralogical Magazine: 81: 319–327.
    • 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.
  • Utah
    • Grand Co.
      • Thompsons Mining District
        • Yellow Cat Mesa
SEM-EDS and PXRD analyzed by Tony Kampf.; ; Kasatkin, A.V., Plášil, J., Marty, J., Belakovskiy, D.I., Lykova, I.S. (2014): Nestolaite, CaSeO3·H2O, a new mineral from the Little Eva mine, Grand County, Utah, USA. Mineralogical Magazine, 78, 497-505.; Kasatkin, A. V., Plasil, J., Pekov, I. V., Belakovskiy, D. I., Nestola, F., Cejka, J., ... & Thorne, B. (2015). Karpenkoite, Co3 (V2O7)(OH) 2· 2H2O, a cobalt analogue of martyite from the Little Eva mine, Grand County, Utah, USA. Journal of Geosciences, 60(4), 251-257.
Chuck Adan specimen. Visual identification.
    • San Juan Co.
      • La Sal Mountains
        • La Sal Mining District (Paradox Valley Mining District)
          • La Sal
Collected by and in the collection of Brent Thorne.
Mineral and/or Locality  
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