General Mawbyite Information![]() Pb(Fe+++Zn)2(AsO4)2(OH,H2O)2 |
![]() Molecular Weight = 649.02 gm |
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Zinc 1.01 % Zn 1.25 % ZnO |
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Iron 16.35 % Fe 21.03 % FeO |
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Arsenic 23.09 % As 35.41 % As2O5 |
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Hydrogen 0.28 % H 2.50 % H2O |
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Lead 35.12 % Pb 37.83 % PbO |
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Oxygen 24.16 % O |
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100.00 % 98.03 % = TOTAL OXIDE |
![]() Pb1.1Fe2+1.9Zn0.1(AsO4)2(OH)1.8 |
![]() In an arsenic-rich reaction halo in fractures and cavities in a spessartine-quartz rock in the oxidation zone of a metamorphosed stratiform Pb-Zn orebody. |
![]() Approved IMA 1989 |
![]() Kintore open cut, Broken Hill, New South Wales, Australia. Link to MinDat.org Location Data. |
![]() Named for Sir Maurice Alan Edgar Mawby (1904-1977), for his contribution to the Australian mining industry. |
![]() Mawbyite |
![]() ![]() ICSD 85132 |
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PDF 45-1468 |
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Mawbyite Crystallography![]() a:b:c =1.4422:1:1.2033 |
![]() a = 9.066, b = 6.286, c = 7.564, Z = 2; beta = 114.857° V = 391.13 Den(Calc)= 5.51 |
![]() Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
![]() By Intensity(I/Io): 3.245(1), 4.647(1), 2.724(0.7), |
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| Physical Properties of Mawbyite![]() {001} Good |
![]() Light brown, Reddish brown, Pale orange, Orange brown. |
![]() 5.5 |
![]() Transparent to Translucent |
![]() Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
![]() Spherical - Spherical, rounded aggregates. |
![]() Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat. |
![]() 4 - Fluorite |
![]() Adamantine |
![]() orange |
| Optical Properties of Mawbyite![]() CI meas= -0.145 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.143 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1803,KPDmeas= 0.1806,KC= 0.1577 Ncalc = 1.87 ![]() Biaxial (-), a=1.94, b=2, g=2.04, bire=0.1000, 2V(Calc)=76, 2V(Meas)=80. |
| Calculated Properties of Mawbyite![]() Bulk Density (Electron Density)=4.90 gm/cc |
note: Specific Gravity of Mawbyite =5.51 gm/cc. ![]() Fermion Index = 0.08 |
Boson Index = 0.92 ![]() PEMawbyite = 628.43 barns/electron |
U=PEMawbyite x rElectron Density=3,081.61 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Mawbyite is Not Radioactive | Mawbyite Classification![]() 40.02.09.04 (40)Hydrated Phosphates, etc |
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(40.02)where A++ (B++)2 (XO4) · x(H2O) |
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(40.02.09)Helmutwinklerite Subgroup |
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![]() 08.CG.15 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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| Other Mawbyite Information![]() NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.74,p1377-1381,1989) OPTIC PROP.(AntBidBlaNic4) |
![]() Links to other databases for Mawbyite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Mawbyite using: Visit our Advertisers for Mawbyite : A Bijoux Google Search for MawbyiteAdam's Minerals Google Search for Mawbyite Cape Minerals Google Search for Mawbyite Dakota Matrix Minerals Google Search for Mawbyite Excalibur Mineral Corp. Google Search for Mawbyite Exceptional Minerals Google Search for Mawbyite John Betts Fine Minerals Search for Mawbyite McDougall Minerals Google Search for Mawbyite Mineral News Website Link Rock and Mineral Shows Google Search for Mawbyite Weinrich Minerals, Inc. Google Search for Mawbyite Ask about Mawbyite here : Print or Cut-and-Paste your Mawbyite Specimen Label here :
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