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Zincgartrellite Mineral Data
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General Zincgartrellite Information
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 Chemical Formula: |
Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 |
| Composition: |
Molecular Weight = 644.39 gm |
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Zinc 9.13 % Zn 11.37 % ZnO |
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Iron 5.20 % Fe 6.69 % FeO |
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Copper 4.93 % Cu 5.55 % Cu2O |
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Arsenic 23.25 % As 35.67 % As2O5 |
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Hydrogen 0.50 % H 4.47 % H2O |
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Lead 32.15 % Pb 34.64 % PbO |
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Oxygen 24.83 % O |
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______ ______ |
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100.00 % 98.39 % = TOTAL OXIDE |
| Empirical Formula: |
PbZn0.9Fe2+0.6Cu0.5(AsO4)2(OH)0.8(H2O)1.2 |
| Environment: |
Associated with wulfenite and duftite on massive chalcocite. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
Tsumeb mine, Namibia. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the Zn-dominant analogue of gartrellite |
| Synonym: |
IMA1998-014 |
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Zincgartrellite Image |
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Images:
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Zincgartrellite
Comments: Small yellow-green zincgartrellite crystals on chalcocite.
Location: Tsumeb, Namibia.
Scale: Specimen Size 3x7 mm.
© Diederik Visser |
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Zincgartrellite Crystallography
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| Axial Ratios: |
a:b:c =0.9875:1:1.356 |
| 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 |
| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 |
| 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),
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Physical Properties of Zincgartrellite
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| Cleavage: |
None |
| Color: |
Greenish yellow. |
| Diaphaneity: |
Transparent to Translucent |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Rosette - Bundled tabular aggregates resembling rose flower petals. |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Hardness: |
4.5 - Between Fluorite and Apatite |
| Luster: |
Vitreous (Glassy) |
| Streak: |
yellow |
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Optical Properties of Zincgartrellite
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| Gladstone-Dale: |
CI calc= -0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1757,KC= 0.1626
Ncalc = 1.87 |
| Optical Data: |
Biaxial (-), a=1.91, b=1.94, g=1.97, bire=0.0600 |
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Calculated Properties of Zincgartrellite
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| Electron Density: |
Bulk Density (Electron Density)=4.79 gm/cc
note: Specific Gravity of Zincgartrellite =5.35 gm/cc.
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| Fermion Index: |
Fermion Index = 0.07
Boson Index = 0.93 |
| Photoelectric: |
PEZincgartrellite = 577.36 barns/electron
U=PEZincgartrellite x rElectron Density=2,763.91 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zincgartrellite is Not Radioactive |
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Zincgartrellite Classification
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| Dana Class: |
43.02.02.02 (43)Compound Phosphates, etc. |
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(43.02)(Anhydrous Normal Compound Anions) |
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(43.02.02)Gartrellite Group |
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43.02.02.01 Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri |
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43.02.02.02 Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1 |
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43.02.02.03 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1 |
| Strunz Class: |
08.CG.20 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.C - Phosphates without Additional Anions, with H2O |
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08.CG -With large and medium-sized cations, RO4:H2O = 1:1 |
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08.CG.20 Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri |
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08.CG.20 Helmutwinklerite PbZn2(AsO4)2•2(H2O) P1 1 |
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08.CG.20 Phosphogartrellite! PbCuFe(PO4)2(OH,H2O)2 P1 1 |
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08.CG.20 Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1 |
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08.CG.20 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2•2(H2O) P1 1 |
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08.CG.20 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1 |
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Other Zincgartrellite Information
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| References: |
NAME( AmMin, v 86, p 940) PHYS. PROP.(AmMin, v 86, p 940) OPTIC PROP.(AmMin, v 86, p 940) |
| 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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Zincgartrellite
Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2
Dana No: 43.02.02.02 Strunz No: 08.CG.20
Locality:
Notes:
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