Mineralogy Database

Yvonite Mineral Data

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General Yvonite Information

Help on Chemical  Formula: Chemical Formula: Cu(AsO3OH)•2(H2O)
Help on Composition: Composition: Molecular Weight = 239.50 gm
   Copper    26.53 %  Cu   33.21 % CuO
   Arsenic   31.28 %  As   47.98 % As2O5
   Hydrogen   2.10 %  H    18.80 % H2O
   Oxygen    40.08 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu(AsO3OH)•2(H2O)
Help on Environment: Environment: Gold-bearing sulfo-arsenic ore.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Salsigne mine near Carcassone, Aude, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in honor of Klaus Yvon, professor of crystallography at the University of Geneva, Switzerland.
Help on Name Pronunciation: Name Pronunciation: Yvonite Say YVONITE
Help on Synonym: Synonym: ICSD 85540

Yvonite Image

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Comments: Bluish green or turquoise-colored microcrystals of yvonite on metallic matrix of arsenopyrite & native bismuth.
Location: Salsigne mine, Carcassone, Aude, France. Scale: 2 cm.
© John Attard

Yvonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6833:1:0.539
Help on Cell Dimensions: Cell Dimensions: a = 7.632, b = 11.168, c = 6.02, Z = 4; alpha = 89.317°, beta = 86.55°, gamma = 74.733° V = 494.07 Den(Calc)= 3.22
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.35(1), 3.936(0.6), 4.44(0.6),

Physical Properties of Yvonite

Help on Cleavage: Cleavage: {100} Perfect, {010} Poor
Help on Color: Color: Turquoise blue.
Help on Density: Density: 3.2
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Irregular - Very brittle fracture producing irregular fragments
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: blue

Optical Properties of Yvonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.038 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2045,KPDmeas= 0.2057,KC= 0.1981
Ncalc = 1.63 - 1.64
Help on Optical Data: Optical Data: Biaxial (-), a=1.615, b=1.66, g=1.7, bire=0.0850, 2V(Calc)=84, 2V(Meas)=82. Dispersion r > v medium.
Help on Pleochroism (x): Pleochroism (x): colorless or light blue.
Help on Pleochroism (y): Pleochroism (y): light blue.
Help on Pleochroism (z): Pleochroism (z): blue.

Calculated Properties of Yvonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.09 gm/cc
note: Specific Gravity of Yvonite =3.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.000195547
Boson Index = 0.999804453
Help on Photoelectric: Photoelectric: PEYvonite = 32.79 barns/electron
U=PEYvonite x rElectron Density= 101.39 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Yvonite is Not Radioactive

Yvonite Classification

Help on  Dana Class: Dana Class: (39)Hydrated Acid Phosphates, etc
  (39.01)A+ [HXO4] � x(H2O)
  (39.01.10)Dana Group Yvonite! Cu(AsO3OH)•2(H2O) P1 1
Help on  Strunz Class: Strunz Class: 08.CB.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CB -With only medium-sized cations, RO4:H2O = 1:1
08.CB.25 Yvonite! Cu(AsO3OH)•2(H2O) P1 1

Other Yvonite Information

Help on References: References: NAME( AmMin) PHYS. PROP.(Am.Min.,Vol.83,p383-389,1998) OPTIC PROP.(AmMin)
Help on See Also: See Also: Links to other databases for Yvonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 08.CB.25





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