General Segnitite Information![]() PbFe+++3H(AsO4)2(OH)6 |
![]() Molecular Weight = 755.63 gm |
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Iron 22.17 % Fe 31.70 % Fe2O3 |
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Arsenic 19.83 % As 30.42 % As2O5 |
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Hydrogen 0.93 % H 8.34 % H2O |
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Lead 27.42 % Pb 29.54 % PbO |
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Oxygen 29.64 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() PbFe3+3H(AsO4)2(OH)6 |
![]() Oxidized zone of a Pb-Zn orebody. |
![]() Approved IMA 1992 |
![]() Broken Hill, New South Wales, and at Coppin Pool, about 41 km east-southeast of Mt. Tom Price, Western Australia. Link to MinDat.org Location Data. |
![]() Named for E. Ralph Segnit (1923-1999), mineralogist and petrologist, University of Adelaide, Adelaide, Australia, for his contributions to Australian mineralogy. |
![]() ICSD 40681 |
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IMA1991-017 |
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PDF 45-1392 |
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Segnitite Crystallography![]() a:c = 1:2.32545 |
![]() a = 7.359, c = 17.113, Z = 3; V = 802.59 Den(Calc)= 4.69 |
![]() Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m |
![]() By Intensity(I/Io): 3.092(1), 5.966(0.5), 3.678(0.4), |
| Physical Properties of Segnitite![]() {???} Good |
![]() Greenish brown, Yellow brown. |
![]() Transparent to Translucent |
![]() 4 - Fluorite |
![]() Adamantine |
![]() light yellow |
| Optical Properties of Segnitite![]() CI calc= 0.051 (Good) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.2058,KC= 0.2168 Ncalc = 2.02 ![]() Uniaxial (-), e=1.955, w=1.975, bire=0.0200. |
| Calculated Properties of Segnitite![]() Bulk Density (Electron Density)=4.28 gm/cc |
note: Specific Gravity of Segnitite =4.69 gm/cc. ![]() Fermion Index = 0.06 |
Boson Index = 0.94 ![]() PESegnitite = 482.13 barns/electron |
U=PESegnitite x rElectron Density=2,064.79 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Segnitite is Not Radioactive | Segnitite Classification![]() 42.07.04.04 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.07)where (AB)5 (XO4)3 Zq · x(H2O) |
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(42.07.04)Arsenocrandallite Group |
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![]() 08.BL.10 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BL -With medium-sized and large cations, (OH, etc.):RO4 = 3:1 |
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| Other Segnitite Information![]() NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.77,p656-659,1992) OPTIC PROP.(Am.Min.,Vol.77,p656-659,1992) |
![]() Links to other databases for Segnitite : |
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 Search for Segnitite using: Visit our Advertisers for Segnitite : A Bijoux Google Search for SegnititeAdam's Minerals Google Search for Segnitite Cape Minerals Google Search for Segnitite Dakota Matrix Minerals Google Search for Segnitite Excalibur Mineral Corp. Google Search for Segnitite Exceptional Minerals Google Search for Segnitite John Betts Fine Minerals Search for Segnitite McDougall Minerals Google Search for Segnitite Mineral News Website Link Rock and Mineral Shows Google Search for Segnitite Weinrich Minerals, Inc. Google Search for Segnitite Ask about Segnitite here : Print or Cut-and-Paste your Segnitite Specimen Label here :
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