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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 (100)
4.51 (30)
3.91 (30)
3.03 (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:
Fianelite3 photos of Ansermetite associated with Fianelite on mindat.org.
Ranciéite2 photos of Ansermetite associated with Ranciéite on mindat.org.
Pascoite1 photo of Ansermetite associated with Pascoite on mindat.org.
Rhodonite1 photo of Ansermetite associated with Rhodonite on mindat.org.

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
    • Genova Province
      • Graveglia Valley
        • 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
    • Hannou
Yamada et al (2000) Koubutsu-Gakkai Kou’en-Youshi, 88
Switzerland (TL)
  • Grischun (Grisons; Graubünden)
    • Hinterrhein Valley
      • 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 District
        • Gateway
Kampf, A.R., Nash, B.P., Marty, J., Hughes, J.M. (2016): Mesaite, CaMn2+5(V2O7)3·12H2O, a new vanadate mineral from the Packrat mine, near Gateway, Mesa County, Colorado, USA. Mineralogical Magazine: 80: (in press)
  • Utah
    • Grand Co.
      • Thompsons District (S. E. Thomsons)
        • 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.
Chuck Adan specimen. Visual identification.
    • San Juan Co.
      • La Sal District (Paradox Valley District)
        • La Sal
Collected by and in the collection of Brent Thorne.
Mineral and/or Locality  
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