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Ansermetite

Formula:
Mn
2+
 
[V
 
2
O
 
6
] · 4H
 
2
O
System:MonoclinicColour:carmine red to wine red
Hardness:3
Name:Honouring Stefan Ansermet (b. 1964), Swiss mineral collector and photographer.
This page provides mineralogical data about Ansermetite.

Classification of Ansermetite

IMA status:Approved 2002
Strunz 8th edition ID:4/G.07-48
Nickel-Strunz 10th (pending) edition ID:4.HD.30

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

Type Locality:Fianel Mine, Ausserferrera, Ferrera Valley, Hinterrhein Valley, Grischun (Grisons; Graubünden), Switzerland
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:
SaneroitePyrobelonitePalenzonaiteMedaiteLimonite
Fianelite

Physical Properties of Ansermetite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent
Colour:carmine red to wine red
Streak:orange
Hardness (Mohs):3
Tenacity:Brittle
Cleavage:Perfect
on {110}
Density (measured):2.5 - 2.55 g/cm3

Crystallography of Ansermetite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Cell Parameters:a = 13.17Å, b = 10.13Å, c = 6.983Å
β = 111.57°
Ratio:a:b:c = 1.3 : 1 : 0.689
Unit Cell Volume:V 866.37 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
7.82 (100)
4.51 (30)
3.91 (30)

Chemical Properties of Ansermetite

Formula:
Mn
2+
 
[V
 
2
O
 
6
] · 4H
 
2
O
All elements listed in formula:H, Mn, O, V

Relationship of Ansermetite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.HD.05Rossite
Ca[V
 
2
O
 
6
] · 4H
 
2
O
4.HD.10Metarossite
Ca[V
 
2
O
 
6
] · 2H
 
2
O
4.HD.15Munirite
NaVO
 
3
·2H
 
2
O
4.HD.20Metamunirite
NaVO
 
3
4.HD.25Dickthomssenite
Mg(V
 
2
O
 
6
)·7H
 
2
O

Other Names for Ansermetite

Synonyms:
IMA2002-017
Other Languages:
German:Ansermetit
Russian:Ансерметит

Other Information

Fluorescence in UV light:none
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Ansermetite

Reference List: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.

Articles/Blogs about Ansermetite

Internet Links for Ansermetite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Ansermetite in the Natural History Museum (London) online catalogue
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    Localities for Ansermetite

    The 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.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Liguria
      • Genova Province
        • Ne
          • Graveglia Valley
            • Reppia
    R. Bracco, C. Leporatti, U. Kolitsch and M. Ciuffardi (2006): Ansermetite: ancora una novità da Gambatesa. Micro 2006, no. 2, 29-32. (in Italian)
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Hinterrhein Valley
        • Ferrera Valley
          • Ausserferrera
    J. Brugger et al.: Can. Mineral. 41:1423-1431 (2003)
    USA
     
    • California
      • Trinity Co.
        • Mad River Ridge
    Tony Kampf (PXRD analysis)
    Mineral and/or Locality
    Google
     
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