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Zincgartrellite Mineral Data

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General Zincgartrellite Information

Help on Chemical  Formula: Chemical Formula: Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2
Help on Composition: Composition: Molecular Weight = 644.39 gm
   Zinc       9.13 %  Zn   11.37 % ZnO
   Iron       5.20 %  Fe    6.69 % FeO
   Copper     4.93 %  Cu    5.55 % Cu2O
   Arsenic   23.25 %  As   35.67 % As2O5
   Hydrogen   0.50 %  H     4.47 % H2O
   Lead      32.15 %  Pb   34.64 % PbO
   Oxygen    24.83 %  O
            ______        ______ 
            100.00 %       98.39 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbZn0.9Fe2+0.6Cu0.5(AsO4)2(OH)0.8(H2O)1.2
Help on Environment: Environment: Associated with wulfenite and duftite on massive chalcocite.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Tsumeb mine, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Zn-dominant analogue of gartrellite
Help on Synonym: Synonym: IMA1998-014

Zincgartrellite Image

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Comments: Small yellow-green zincgartrellite crystals on chalcocite.
Location: Tsumeb, Namibia. Scale: Specimen Size 3x7 mm.
© Diederik Visser

Zincgartrellite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9875:1:1.356
Help on Cell Dimensions: Cell Dimensions: a = 5.55, b = 5.62, c = 7.621, Z = 1; alpha = 68.59°, beta = 69.17°, gamma = 69.51° V = 193.75 Den(Calc)= 5.52
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): 2.999(1)(111), 3.252(0.91)(102), 3.283(0.89)(012),4.669(0.86)(101), 2.894(0.74)(111), 4.731(0.74)(011), 2.88(0.7)(111),

Physical Properties of Zincgartrellite

Help on Cleavage: Cleavage: None
Help on Color: Color: Greenish yellow.
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Rosette - Bundled tabular aggregates resembling rose flower petals.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow

Optical Properties of Zincgartrellite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1757,KC= 0.1626
Ncalc = 1.87
Help on Optical Data: Optical Data: Biaxial (-), a=1.91, b=1.94, g=1.97, bire=0.0600

Calculated Properties of Zincgartrellite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.79 gm/cc
note: Specific Gravity of Zincgartrellite =5.35 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEZincgartrellite = 577.36 barns/electron
U=PEZincgartrellite x rElectron Density=2,763.91 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zincgartrellite is Not Radioactive

Zincgartrellite Classification

Help on  Dana Class: Dana Class: (43)Compound Phosphates, etc.
  (43.02)(Anhydrous Normal Compound Anions)
  (43.02.02)Gartrellite Group Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1
Help on  Strunz Class: Strunz Class: 08.CG.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CG -With large and medium-sized cations, RO4:H2O = 1:1
08.CG.20 Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri
08.CG.20 Helmutwinklerite PbZn2(AsO4)2•2(H2O) P1 1
08.CG.20 Phosphogartrellite! PbCuFe(PO4)2(OH,H2O)2 P1 1
08.CG.20 Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1
08.CG.20 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2•2(H2O) P1 1
08.CG.20 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1

Other Zincgartrellite Information

Help on References: References: NAME( AmMin, v 86, p 940) PHYS. PROP.(AmMin, v 86, p 940) OPTIC PROP.(AmMin, v 86, p 940)
Help on See Also: See Also: Links to other databases for Zincgartrellite :
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.CG.20





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