[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts] See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM] Mineral News was founded some twenty years ago and has developed a following of avid mineral collectors seeking timely information about new finds and other items of interest to the collector community. Articles are solicited from collector and scientific authors. General Nealite InformationPb4Fe++(As+++++O4)2Cl4 |
Molecular Weight = 1,304.30 gm |
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Iron 4.28 % Fe 5.51 % FeO |
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Arsenic 11.49 % As 17.62 % As2O5 |
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Lead 63.54 % Pb 68.45 % PbO |
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Chlorine 10.87 % Cl 10.87 % Cl |
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- %
Cl -2.45 % -O=Cl2 |
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Oxygen 9.81 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Pb4Fe2+(AsO4)2Cl4 |
Lead slags. |
Approved IMA 1980 |
Laurion, Attica, Greece. Link to MinDat.org Location Data. |
Named of Leo Neal Yedlin (1908-1997), micromount mineral collector of New Haven, Connecticut, USA. |
Nealite |
ICSD 74191 |
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PDF 33-755 |
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Nealite Crystallographya:b:c =0.6384:1:0.5457 |
a = 6.537, b = 10.239, c = 5.588, Z = 1; alpha = 96.2°, beta = 89.39°, gamma = 97.74° V = 368.42 Den(Calc)= 5.88 |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 |
By Intensity(I/Io): 3.542(1), 6.48(0.8), 4.237(0.7), |
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Mouse
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| Physical Properties of NealiteNone |
Yellow, Light orange. |
5.88 |
Translucent |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Bladed - Aggregates of thin lath-like crystals (e.g. kyanite). |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
4 - Fluorite |
Non-fluorescent. |
Adamantine |
light orange |
| Optical Properties of NealiteCI meas= -0.035 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.035 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1701,KPDmeas= 0.1701,KC= 0.1643 Ncalc = 1.97 Biaxial (?), b=2 |
none. |
none. |
none. |
| Calculated Properties of NealiteBulk Density (Electron Density)=4.98 gm/cc |
note: Specific Gravity of Nealite =5.88 gm/cc. Fermion Index = 0.14 |
Boson Index = 0.86 PENealite =1,163.50 barns/electron |
U=PENealite x rElectron Density=5,790.77 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Nealite is Not Radioactive | Nealite Classification41.04.06.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.04)where (A B)5 (XO4)2 Zq |
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(41.04.06)Dana Group |
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04.JD.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.J - Arsenites, Antimonites, Bismuthites, Sulfites, |
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04.JD -Arsenites, antimonites, bismuthites; with additional anions, with H2O |
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| Other Nealite InformationNAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
Links to other databases for Nealite : |
1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Nealite using: Visit our Advertisers for Nealite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Nealite Mineral Data : Ask about Nealite here : Print or Cut-and-Paste your Nealite Specimen Label here :
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