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Yvonite
A valid IMA mineral species
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About Yvonite
Klaus Yvon
Formula:
Cu(HAsO4) · 2H2O
Colour:
Turquoise-blue
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
3.20
Crystal System:
Triclinic
Member of:
Name:
Named after Klaus Yvon (b. 1943), Professor of Crystallography at the University of Geneva, Switzerland.
Unique Identifiers
Mindat ID:
7382
Long-form identifier:
mindat:1:1:7382:6
Similar Names
IMA Classification of Yvonite
Approved
IMA Formula:
Cu2+(As5+O3OH)·2H2O
Approval year:
1995
First published:
1998
Classification of Yvonite
8.CB.25
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
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 for Standard |
|---|---|---|
| Yv | 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 Yvonite
Vitreous
Transparency:
Transparent
Colour:
Turquoise-blue
Streak:
Blue
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {100}, perfect; on {010}, poor.
On {100}, perfect; on {010}, poor.
Fracture:
Irregular/Uneven
Density:
3.20(2) g/cm3 (Measured) 3.22 g/cm3 (Calculated)
Optical Data of Yvonite
Type:
Biaxial (-)
RI values:
nα = 1.615(2) nβ = 1.660(2) nγ = 1.700(2)
2V:
Measured: 82° (2), Calculated: 84°
Max. Birefringence:
δ = 0.085
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
r > v medium
Optical Extinction:
On (010): X ∧ c = 42°; Z ⊥ (010).
On (100): Z' ∧ [001] = 0-2.5°; X' ∧ c = 3-5.5°.
On (100): Z' ∧ [001] = 0-2.5°; X' ∧ c = 3-5.5°.
Pleochroism:
Weak
Comments:
X = light blue to colorless; Y = light blue; Z = blue.
Comments:
Absorption: Z > Y > X.
Chemistry of Yvonite
Mindat Formula:
Cu(HAsO4) · 2H2O
Element Weights:
Elements listed:
Crystallography of Yvonite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.632(3) Å, b = 11.168(3) Å, c = 6.020(3) Å
α = 89.32(3)°, β = 86.55(5)°, γ = 74.43(3)°
α = 89.32(3)°, β = 86.55(5)°, γ = 74.43(3)°
Ratio:
a:b:c = 0.683 : 1 : 0.539
Unit Cell V:
493.38 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Elongated along [001], flattened on {010}, with prominent {100} and {010}. Small crystals also exhibit minor {hkl} and {001} forms.
Twinning:
Multiple laminae, with composition plane {010}, twin axis ⊥ {010}.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
|---|---|---|---|---|---|---|---|
| 0001977 | Yvonite | Sarp H, Cerny R (1998) Description and crystal structure of yvonite, Cu(AsO3OH)2H2O American Mineralogist 83 383-389 |  | 1998 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.35 Å | (100) |
| 5.239 Å | (50) |
| 4.40 Å | (60) |
| 3.936 Å | (60) |
| 3.302 Å | (40) |
| 3.008 Å | (50) |
| 2.840 Å | (35) |
Comments:
Salsigne mine, France. Data from type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Yvonite
General Appearance of Type Material:
Aggregates or radiated spherule to 1 mm. Individual crystals of maximum size 0.3 x 0.15 x 0.06 mm.
Place of Conservation of Type Material:
Natural History Museum, Geneva University, Geneva, Switzerland, 450/33.
Geological Setting of Type Material:
Secondary mineral from mine dumps.
Associated Minerals at Type Locality:
Synonyms of Yvonite
Other Language Names for Yvonite
Relationship of Yvonite to other Species
Common Associates
Associations Based on Photo Data:
| 36 photos of Yvonite associated with Geminite | Cu2+(AsO3OH) · H2O |
| 29 photos of Yvonite associated with Pushcharovskite | K0.6Cu18[AsO2(OH)2]4[AsO3OH]10(AsO4)(OH)9.6 · 18.6H2O |
| 11 photos of Yvonite associated with Native Bismuth | Bi |
| 4 photos of Yvonite associated with Arsenopyrite | FeAsS |
| 1 photo of Yvonite associated with Arsenolite | As2O3 |
Related Minerals - Strunz-mindat Grouping
| 8.CB. | Krupičkaite | Cu6[AsO3(OH)]6 · 8H2O |
| 8.CB.X | Honzaite | Ni2(AsO3OH)2 · 5H2O |
| 8.CB.X | Redondite | AlPO4 · 2H2O |
| 8.CB.05 | Ermeloite | Al(PO4) · H2O |
| 8.CB.05 | Serrabrancaite | MnPO4 · H2O |
| 8.CB.10 | Nyholmite | Cd3Zn2(AsO3OH)2(AsO4)2 · 4H2O |
| 8.CB.10 | Villyaellenite | (Mn,Ca)Mn2Ca2(AsO3OH)2(AsO4)2 · 4H2O |
| 8.CB.10 | Giftgrubeite | CaMn2Ca2(AsO4)2(AsO3OH)2 · 4H2O |
| 8.CB.10 | Hureaulite | Mn2+5(PO3OH)2(PO4)2 · 4H2O |
| 8.CB.10 | Miguelromeroite | Mn2+5(AsO3OH)2(AsO4)2(H2O)4 |
| 8.CB.10 | 'UM1997-09-AsO:CaHMgZn' | (Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O |
| 8.CB.15 | Krautite | Mn(HAsO4) · H2O |
| 8.CB.20 | Cobaltkoritnigite | Co(AsO3OH) · H2O |
| 8.CB.20 | Magnesiokoritnigite | Mg(AsO3OH) · H2O |
| 8.CB.20 | Koritnigite | Zn(AsO3OH) · H2O |
| 8.CB.30 | Geminite | Cu2+(AsO3OH) · H2O |
| 8.CB.35 | Schubnelite | Fe3+VO4 · H2O |
| 8.CB.40 | Radovanite | Cu2Fe3+(AsO4)(HAs3+O3)2 · H2O |
| 8.CB.45 | Kazakhstanite | Fe3+5V4+3V5+12O39(OH)9 · 9H2O |
| 8.CB.50 | Kolovratite | NixZny(VO4)0.67(x+y) · nH2O |
| 8.CB.60 | Burgessite | Co2(H2O)4[AsO3(OH)]2(H2O) |
| 8.CB.65 | Cardite | Zn5.5(AsO4)2(AsO3OH)(OH)3 · 3H2O |
Fluorescence of Yvonite
Not fluorescent (LW or SW).
Other Information
Notes:
Rapidly soluble in HCl.
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 Yvonite
mindat.org URL:
https://www.mindat.org/min-7382.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Yvonite
Localities for Yvonite
Showing 4 localities.
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.
Czech Republic | |
| M.E. Ciriotti - 04.06.2008 - Probed |
France (TL) | |
| Sarp et al. (1998) |
| Sarp et al. (1997) +2 other references |
Namibia | |
| von Bezing et al. (2016) |
Quick NavTopAbout YvoniteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Salsigne mine, Salsigne, Carcassonne, Aude, Occitanie, France