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Ansermetite

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Fianel Mine, Ausserferrera, Ferrera Valley, Hinterrhein Valley, Grischun (Grisons; Graubünden), Switzerland
© R. Bracco

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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.

Internet Links for Ansermetite

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    Localities for Ansermetite

    Hide Locality List
    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.
    (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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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 9th Nov 2009 11:14:07