Bartelkeite Mineral Data + 
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- 7.6.2.1 Bartelkeite PbFeGe3O8 P 21,P 21/m Mono
- IV/C.08-10 Yimengite K(Cr,Ti,Fe,Mg)12O19 P 63/mmc 6/m 2/m 2/m
- IV/C.08-20 Hawthorneite Ba[Ti3Cr4Fe4Mg]O19 P 63/mmc 6/m 2/m 2/m
- IV/C.08-22 Haggertyite! Ba[Fe6Ti5Mg]O19 P 63/mmc 6/m 2/m 2/m
- IV/C.08-25 Batiferrite! Ba(Ti2Fe8Fe2)O19 P 63/mmc 6/m 2/m 2/m
- IV/C.08-30 Hibonite (Ca,Ce)(Al,Ti,Mg)12O19 P 63/mmc 6/m 2/m 2/m
- IV/C.08-35 Nezilovite! PbZn2(Mn,Ti)2Fe8O19 P 63/mmc 6/m 2/m 2/m
- IV/C.08-40 Magnetoplumbite Pb(Fe,Mn)12O19 P 63/mmc 6/m 2/m 2/m
- IV/C.08-45 Zenzenite Pb3(Fe,Mn)4Mn3O15 P 63/mcm 6/m 2/m 2/m
- IV/C.08-47 Lindqvistite Pb2(Mn,Mg)Fe16027 P 63/mmc 6/m 2/m 2/m
- IV/C.08-50 Plumboferrite Pb2Fe(11-x)MnxO19-2x(x=1/3) P 63/mmc 6/m 2/m 2/m
- IV/C.08-60 Bartelkeite PbFeGe3O8 P 21,P 21/m Mono
- IV/C.08-70 Otjisumeite PbGe4O9 P1,P 1 Tri
General Bartelkeite Information |
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 Chemical Formula: |
PbFe++Ge3O8 | ||
| Composition: |
Molecular Weight = 608.87 gm | ||
| Iron 9.17 % Fe 11.80 % FeO | |||
| Germanium 35.78 % Ge 51.54 % GeO2 | |||
| Lead 34.03 % Pb 36.66 % PbO | |||
| Oxygen 21.02 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
PbFe2+Ge3O8 | ||
| Environment: |
Primary ore cavities with other Ge-bearing minerals. | ||
| IMA Status: |
Approved IMA 1981 | ||
| Locality: |
Tsumeb, Namibia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Wolfgang Bartelke, mineral collector and specialist in Tsumeb mineral. | ||
Search for Bartelkeite Images | |||
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Images:
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Bartelkeite Crystallography |
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| Axial Ratios: |
a:b:c =0.3967:1:0.4304 | ||
| Cell Dimensions: |
a = 5.431, b = 13.689, c = 5.892, Z = 2; beta = 111.48° V = 407.62 Den(Calc)= 4.96 | ||
| Crystal System: |
MonoclinicSpace Group: P 21,P 21/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.91(1), 2.87(0.8), 4.42(0.8), | ||
Physical Properties of Bartelkeite |
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| Cleavage: |
[101] Distinct | ||
| Color: |
Colorless, Light green. | ||
| Density: |
4.97 | ||
| Diaphaniety: |
Transparent | ||
| Habit: |
Acicular - Occurs as needle-like crystals. | ||
| Habit: |
Tabular - Form dimensions are thin in one direction. | ||
| Hardness: |
4 - Fluorite | ||
| Streak: |
white | ||
Optical Properties of Bartelkeite |
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| Gladstone-Dale: |
CI meas= -0.157 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.159 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.182,KPDmeas= 0.1816,KC= 0.157 |
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| Optical Data: |
Biaxial (-), a=1.885, b=1.91, g=1.913, bire=0.0280, 2V(Calc)=36, 2V(Meas)=~35. Dispersion r > v. | ||
Calculated Properties of Bartelkeite |
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| Electron Density: |
relectron=4.38 gm/cc |
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| Fermion Index |
Fermion Index = 0.10515 Boson Index = 0.89485 |
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| Photoelectric: |
PEBartelkeite = 619.99 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bartelkeite is Not Radioactive |
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Bartelkeite Classification |
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| Dana Class: |
7.6.2.1 (7)Multiple Oxides | ||
| (7.6)where A (B)4 X9 | |||
| (7.6.2)Dana Group | |||
| Strunz Class: |
IV/C.08-60 IV - Oxides | ||
| IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds) | |||
| IV/C.08 - Yimngite - Otjisumeite series | |||
Other Bartelkeite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Bartelkeite : 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 Bartelkeite using: Visit our Advertisers for Bartelkeite : Translate Bartelkeite Mineral Data : Ask about Bartelkeite here : Print or Cut-and-Paste your Bartelkeite Specimen Label here :
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