Mineralogy Database

Arthurite Mineral Data

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General Arthurite Information

Help on Chemical  Formula: Chemical Formula: CuFe+++2(AsO4,PO4,SO4)2(O,OH)2•4(H2O)
Help on Composition: Composition: Molecular Weight = 531.49 gm
   Iron        21.02 %  Fe   30.05 % Fe2O3
   Copper      11.96 %  Cu   13.46 % Cu2O
   Arsenic     19.74 %  As   30.27 % As2O5
   Phosphorus   2.33 %  P     5.34 % P2O5
   Hydrogen     1.61 %  H    14.41 % H2O
   Sulfur       1.21 %  S     3.01 % SO3
   Oxygen      42.14 %  O
              ______        ______ 
              100.00 %       96.54 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CuFe3+22(AsO4)0.72(PO4)0.22(SO4)0.1O1.5(OH)0.5�4(H2O)
Help on Environment: Environment: Secondary mineral in the oxidation zone of some copper deposits, formed by the alteration of arsenopyrite or enargite.
Help on IMA Status: IMA Status: Approved IMA 1964
Help on Locality: Locality: Hingston Down Consols mine, Calstock, Cornwall, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Sir Arthur Edward Ian Montagu Russell (1878-1964) and Arthur William Gerald Kingsbury (1906-1968) for their contributions to British mineralogy.
Help on Name Pronunciation: Name Pronunciation: Arthurite + Pronunciation Say ARTHURITE
Help on Synonym: Synonym: ICSD 100444
  PDF 36-400

Arthurite Image

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  Arthurite   Pharmacosiderite

Comments: Altered rhyolite vug lined with brilliant apple green arthurite and cubic green crystals of pharmacosiderite.
Location: Majuba Hill Mine, Pershing County, Nevada. USA. Scale: 2.7 x 1.7 cm.
© John Veevaert

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Comments: Radiating sprays of acicular arthurite.
Location: Majuba Hill mine, Pershing County, Nevada, USA. Scale: Spray size 2.5 mm.
© Tom Loomis / Dakota Matrix

Arthurite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0488:1:0.5769
Help on Cell Dimensions: Cell Dimensions: a = 10.09, b = 9.62, c = 5.55, Z = 2; beta = 92.2° V = 538.32 Den(Calc)= 3.28
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.28(1), 4.81(1), 6.97(1),

Physical Properties of Arthurite

Help on Cleavage: Cleavage: None
Help on Color: Color: Apple green, Emerald green.
Help on Density: Density: 3.02
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light green

Optical Properties of Arthurite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.061 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2336,KPDmeas= 0.2538,KC= 0.2393
Ncalc = 1.72 - 1.78
Help on Optical Data: Optical Data: Biaxial (+/-), a=1.736, b=1.767, g=1.796, bire=0.0600, 2V(Calc)=86, 2V(Meas)=~90.
Help on Pleochroism (x): Pleochroism (x): colorless or pale green.
Help on Pleochroism (y): Pleochroism (y): gray green.
Help on Pleochroism (z): Pleochroism (z): olive green.

Calculated Properties of Arthurite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.17 gm/cc
note: Specific Gravity of Arthurite =3.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0047504247
Boson Index = 0.9952495753
Help on Photoelectric: Photoelectric: PEArthurite = 25.00 barns/electron
U=PEArthurite x rElectron Density= 79.27 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Arthurite is Not Radioactive

Arthurite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.18)Whitmoreite Group Whitmoreite FeFe2(PO4)2(OH)2•4(H2O) P 21/c 2/m Arthurite CuFe2(AsO4,PO4,SO4)2(O,OH)2•4(H2O) P 21/c 2/m Ojuelaite ZnFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m Earlshannonite (Mn,Fe)Fe2(PO4)2(OH)2•4(H2O) P 21/c 2/m Gladiusite! Fe2(Fe,Mg)4(PO4)(OH)13•H2O P 21/n 2/m Cobaltarthurite! CoFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m Kunatite CuFe2(PO4)2(OH)2•4H2O P 21/c 2/m Bendadaite! FeFe2(AsO4)2(OH)2•4H2O P 21/c 2/m
Help on  Strunz Class: Strunz Class: 08.DC.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
08.DC.15 Earlshannonite (Mn,Fe)Fe2(PO4)2(OH)2•4(H2O) P 21/c 2/m
08.DC.15 Arthurite CuFe2(AsO4,PO4,SO4)2(O,OH)2•4(H2O) P 21/c 2/m
08.DC.15 Ojuelaite ZnFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m
08.DC.15 Whitmoreite FeFe2(PO4)2(OH)2•4(H2O) P 21/c 2/m
08.DC.15 Cobaltarthurite! CoFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m
08.DC.15 Kunatite CuFe2(PO4)2(OH)2•4H2O P 21/c 2/m
08.DC.15 Bendadaite! FeFe2(AsO4)2(OH)2•4H2O P 21/c 2/m

Other Arthurite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic4)
Help on See Also: See Also: Links to other databases for Arthurite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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Dana No: Strunz No: 08.DC.15





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