Ansermetite
A valid IMA mineral species
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About Ansermetite
Stefan Ansermet
Formula:
Mn2+(V2O6) · 4H2O
Colour:
carmine red to wine red
Lustre:
Adamantine
Hardness:
3
Specific Gravity:
2.5 - 2.55
Crystal System:
Monoclinic
Name:
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.
Unique Identifiers
Mindat ID:
26443
Long-form identifier:
mindat:1:1:26443:7
GUID
(UUID V4):
(UUID V4):
2ba44931-1de1-4f7e-a4d4-720a78fc5f04
IMA Classification of Ansermetite
Approved
IMA Formula:
Mn2+V5+2O6 · 4H2O
Approval year:
2002
Classification of Ansermetite
4.HD.30
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
D : Inovanadates
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
D : Inovanadates
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Anm | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ansermetite
Adamantine
Transparency:
Transparent
Colour:
carmine red to wine red
Streak:
orange
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {110}
on {110}
Density:
2.5 - 2.55 g/cm3 (Measured) 2.49 g/cm3 (Calculated)
Optical Data of Ansermetite
Type:
Biaxial
Pleochroism:
Strong
Comments:
orange-yellow to ruby red, in polarized light
Comments:
n(min.) = 1.797 n(max.) = 1.856
Chemistry of Ansermetite
Mindat Formula:
Mn2+(V2O6) · 4H2O
Elements listed:
Crystallography of Ansermetite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 13.17 Å, b = 10.13 Å, c = 6.983 Å
β = 111.57°
β = 111.57°
Ratio:
a:b:c = 1.3 : 1 : 0.689
Unit Cell V:
866.37 ų (Calculated from Unit Cell)
Z:
4
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005917 | Ansermetite | Brugger J, Berlepsch P, Meisser N, Armbruster T (2003) Ansermetite, MnV2O6.4H2O, a new mineral species with V5+ in five-fold coordination from Val Ferrera, Eastern Swiss Alps The Canadian Mineralogist 41 1423-1431 |  | 2003 | Val Ferrera, Eastern Swiss Alps | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.82 Å | (100) |
| 4.51 Å | (30) |
| 3.91 Å | (30) |
| 3.03 Å | (70) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23) | |
| High-𝑇 alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits |
Type Occurrence of Ansermetite
General Appearance of Type Material:
scaly crusts to 0.5 mm thickness, rarely minute wedge-shaped tabular crystals to 0.1 mm
Place of Conservation of Type Material:
The Geology Museum, Lausanne, Switzerland (MGL #68936).
Geological Setting of Type Material:
late-stage hydrothermal mineralizations in fissures of massive manganese ores
Associated Minerals at Type Locality:
Reference:
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.
Synonyms of Ansermetite
Other Language Names for Ansermetite
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Ansermetite associated with Fianelite | Mn2+2((V,As)2O7) · 2H2O |
| 2 photos of Ansermetite associated with Pascoite | Ca2Ca(V10O28) · 17H2O |
| 2 photos of Ansermetite associated with Pascoite Group | |
| 2 photos of Ansermetite associated with Ranciéite | (Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O |
| 2 photos of Ansermetite associated with Sandstone | |
| 1 photo of Ansermetite associated with Rhodonite | CaMn3Mn[Si5O15] |
| 1 photo of Ansermetite associated with Quartz | SiO2 |
| 1 photo of Ansermetite associated with Gypsum | CaSO4 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 4.HD. | Pseudodickthomssenite | Mg(VO3)2 · 8H2O |
| 4.HD.05 | Rossite | Ca(VO3)2 · 4H2O |
| 4.HD.10 | Metarossite | Ca(V2O6) · 2H2O |
| 4.HD.15 | Munirite | NaVO3 · 1.9H2O |
| 4.HD.20 | Metamunirite | NaVO3 |
| 4.HD.25 | Dickthomssenite | Mg(V2O6) · 7H2O |
Fluorescence of Ansermetite
none
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Ansermetite
mindat.org URL:
https://www.mindat.org/min-26443.html
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References for Ansermetite
Localities for Ansermetite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Italy | |
| SC-XRD 2012-02-28 M.E. Ciriotti - CrisDi - Turin University: CCD: 6.984 (6) |
| R. Bracco et al. (2006) |
| Marco Bonifazi collection |
Japan | |
| Yamada et al (2000) |
Spain | |
| Dill et al. (2023) |
| Dill et al. (2023) | |
Switzerland (TL) | |
| Brugger et al. (2003) |
USA | |
| Tony Kampf (PXRD analysis) |
| Kampf et al. (2017) |
| Kampf et al. (2019) |
| SEM-EDS and PXRD analyzed by Tony Kampf. +2 other references |
| Chuck Adan specimen. Visual ... | |
| Thorne (n.d.) |
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Gambatesa Mine, Reppia, Ne, Genoa, Liguria, Italy