Mathewrogersite Mineral Data + 
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- 78.3.1.1 Mathewrogersite Pb7(Fe,Cu)Al3GeSi12O36·(OH,H2O)6 R 3,R 3-,R 32,R 3m,R 3m- Trig
- VIII/E.02-10 Walstromite BaCa2Si3O9 P1 1
- VIII/E.02-20 Margarosanite Pb(Ca,Mn)2Si3O9 P1 1
- VIII/E.02-30 Roeblingite Pb2Ca6(Si6O18)(SO4)2(OH)2·4(H2O) C 2/m 2/m
- VIII/E.02-40 Mathewrogersite Pb7(Fe,Cu)Al3GeSi12O36·(OH,H2O)6 R 3,R 3-,R 32,R 3m,R 3m- Trig
General Mathewrogersite Information |
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 Chemical Formula: |
Pb7(Fe,Cu)Al3GeSi12O36·(OH,H2O)6 | ||
| Composition: |
Molecular Weight = 2,678.79 gm | ||
| Aluminum 3.02 % Al 5.71 % Al2O3 | |||
| Iron 1.56 % Fe 2.01 % FeO | |||
| Copper 0.59 % Cu 0.74 % CuO | |||
| Silicon 12.58 % Si 26.92 % SiO2 | |||
| Germanium 2.71 % Ge 3.91 % GeO2 | |||
| Hydrogen 0.30 % H 2.69 % H2O | |||
| Lead 54.14 % Pb 58.32 % PbO | |||
| Oxygen 25.09 % O | |||
| ______ ______ | |||
| 100.00 % 100.30 % = TOTAL OXIDE | |||
| Empirical Formula: |
Pb7Fe2+0.75Cu0.25Al3GeSi12O36(OH)4·2(H2O) | ||
| Environment: |
Corroded Pb-Zn ores of the lower oxidation zone. | ||
| IMA Status: |
Approved IMA 1986 | ||
| Locality: |
Tsumeb, Namibia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named to honor Mathew Rogers, first European prospector at Tsumeb, Namibia. | ||
Search for Mathewrogersite Images | |||
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Images:
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Mathewrogersite Crystallography |
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| Axial Ratios: |
a:c = 1:5.43573 | ||
| Cell Dimensions: |
a = 8.457, c = 45.97, Z = 3; V = 2,847.33 Den(Calc)= 4.69 | ||
| Crystal System: |
TrigonalSpace Group: R 3,R 3-,R 32,R 3m,R 3m- | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.257(1), 15.3(0.7), 2.03(0.7),1.762(0.6), 2.766(0.6), 7.68(0.6), 4.08(0.5), | ||
Physical Properties of Mathewrogersite |
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| Cleavage: |
[0001] Perfect | ||
| Color: |
Colorless, White, Light green yellow. | ||
| Density: |
4.7 | ||
| Diaphaniety: |
Translucent | ||
| Habit: |
Hexagonal - Six-sided crystal shape in cross-section or habit. | ||
| Habit: |
Platy - Sheet forms (e.g. micas). | ||
| Hardness: |
2 - Gypsum | ||
| Luster: |
Vitreous - Pearly | ||
| Streak: |
white | ||
Optical Properties of Mathewrogersite |
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| Gladstone-Dale: |
CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.002 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1658,KPDmeas= 0.1654,KC= 0.1661 |
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| Optical Data: |
Uniaxial (-), e=1.745, w=1.81, bire=0.0650. | ||
Calculated Properties of Mathewrogersite |
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| Electron Density: |
relectron=4.14 gm/cc |
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| Fermion Index |
Fermion Index = 0.12809 Boson Index = 0.87191 |
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| Photoelectric: |
PEMathewrogersite = 943.67 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mathewrogersite is Not Radioactive |
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Mathewrogersite Classification |
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| Dana Class: |
78.3.1.1 (78)Unclassified silicates | ||
| (78.3)possible cyclosilicates | |||
| (78.3.1)Dana Group | |||
| Strunz Class: |
VIII/E.02-40 VIII - Silicates | ||
| VIII/E - Cyklosilicates, triplet rings [Si3O9]6- | |||
| VIII/E.02 - Walstromite - Mathewrogersite series | |||
Other Mathewrogersite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Am.Min.,Vol.72,p1025,1987) | ||
| See Also: |
Links to other databases for Mathewrogersite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Mathewrogersite using: Visit our Advertisers for Mathewrogersite : Translate Mathewrogersite Mineral Data : Ask about Mathewrogersite here : Print or Cut-and-Paste your Mathewrogersite Specimen Label here :
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