Arhbarite Mineral Data + 
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- 42.6.5.1 Strashimirite Cu8(AsO4)4(OH)4·5(H2O) P 2/m,P 2,Pm Mono
- 42.6.5.2 Arhbarite Cu2Mg(AsO4)(OH)3 P1 1
- VII/D.07-10 Nissonite Cu2Mg2(PO4)2(OH)2·5(H2O) C 2/c 2/m
- VII/D.07-20 Strashimirite Cu8(AsO4)4(OH)4·5(H2O) P 2/m,P 2,Pm Mono
- VII/D.07-30 Euchroite Cu2(AsO4)(OH)·3(H2O) P 212121 2 2 2
- VII/D.07-40 Arhbarite Cu2Mg(AsO4)(OH)3 P1 1
- VII/D.07-50 Legrandite Zn2(AsO4)(OH)·(H2O) P 21/c 2/m
- VII/D.07-60 Spencerite Zn4(PO4)2(OH)2·3(H2O) P 2/c 2/m
- VII/D.07-70 Nevadaite! (Cu,[],Al,V)6[Al8(PO4)8F8](H2O)23 P 21mn 2 2 2
General Arhbarite Information |
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 Chemical Formula: |
Cu2Mg(AsO4)(OH)3 | ||
| Composition: |
Molecular Weight = 349.16 gm | ||
| Magnesium 6.13 % Mg 10.16 % MgO | |||
| Cobalt 0.17 % Co 0.21 % CoO | |||
| Copper 37.67 % Cu 47.16 % CuO | |||
| Silicon 0.08 % Si 0.17 % SiO2 | |||
| Nickel 0.17 % Ni 0.21 % NiO | |||
| Arsenic 22.32 % As 34.23 % As2O5 | |||
| Hydrogen 0.84 % H 7.53 % H2O | |||
| Oxygen 32.63 % O | |||
| ______ ______ | |||
| 100.00 % 99.68 % = TOTAL OXIDE | |||
| Empirical Formula: |
Cu1.98Mg0.88Cu0.09Ni0.01Co0.01(AsO4)1.04(SiO4)0.01(OH)2.92 | ||
| Environment: |
Found on massive dolomite. | ||
| IMA Status: |
Approved IMA 1982 | ||
| Locality: |
Arhbar mine, Bou-Azzer, Morocco. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
| Synonym: |
IMA2002-B | ||
Arhbarite Image | |||
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Images:
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Arhbarite Crystallography |
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| Axial Ratios: |
a:b:c =0.889:1:0.8414 | ||
| Cell Dimensions: |
a = 5.315, b = 5.978, c = 5.03, Z = 1; alpha = 113.58°, beta = 97.14°, gamma = 89.3° V = 145.33 Den(Calc)= 3.99 | ||
| Crystal System: |
Triclinic - PedialH-M Symbol (1) Space Group: P1 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 4.57(1), 4.51(0.9), 3.72(0.6),2.47(0.5), 2.6(0.5), 2.63(0.4), 3.25(0.4), | ||
Physical Properties of Arhbarite |
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| Cleavage: |
None | ||
| Color: |
Dark blue. | ||
| Diaphaniety: |
Translucent | ||
| Habit: |
Fibrous - Crystals made up of fibers. | ||
| Habit: |
Spherical - Spherical, rounded aggregates. | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
blue | ||
Optical Properties of Arhbarite |
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| Gladstone-Dale: |
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.183,KC= 0.1827 |
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| Optical Data: |
Biaxial (?), a=1.72, g=1.74, bire=0.0200, 2V(Meas)=90. | ||
| Pleochroism (x): |
turquoise blue. | ||
| Pleochroism (y): |
turquoise blue. | ||
| Pleochroism (z): |
deep turquoise blue. | ||
Calculated Properties of Arhbarite |
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| Electron Density: |
relectron=3.78 gm/cc |
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| Fermion Index |
Fermion Index = 0.00634 Boson Index = 0.99366 |
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| Photoelectric: |
PEArhbarite = 32.27 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Arhbarite is Not Radioactive |
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Arhbarite Classification |
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| Dana Class: |
42.6.5.2 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen | ||
| (42.6)where (AB)2 (XO4) Zq · x(H2O) | |||
| (42.6.5)Dana Group | |||
| Strunz Class: |
VII/D.07-40 VII - Phosphates, Arsenates and Vanadates | ||
| VII/D - Water-bearing phosphates with unfamiliar anions, cations of medium size: Cu, Zn, Mn, Al, Fe | |||
| VII/D.07 - Nissonite - Euchroite - Spencerite series | |||
Other Arhbarite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8, AmMin v 89, p 897) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Arhbarite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Arhbarite using: Visit our Advertisers for Arhbarite : Translate Arhbarite Mineral Data : Ask about Arhbarite here : Print or Cut-and-Paste your Arhbarite Specimen Label here :
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