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Nealite Mineral Data + |
General Nealite Information |
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| Pb4Fe++(As+++++O4)2Cl4 | |||
| Molecular Weight = 1,304.30 gm | |||
| Iron 4.28 % Fe 5.51 % FeO | |||
| Arsenic 11.49 % As 17.62 % As2O5 | |||
| Lead 63.54 % Pb 68.45 % PbO | |||
| Chlorine 10.87 % Cl 10.87 % Cl | |||
| - % Cl -2.45 % -O=Cl2 | |||
| Oxygen 9.81 % O | |||
| ______ ______ | |||
| 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. | |||
| ICSD 74191 | |||
| PDF 33-755 | |||
Nealite Image | |||
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Nealite Crystallography |
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| a: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 Nealite |
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| None | |||
| 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 Nealite |
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| CI 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 |
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| Biaxial (?), b=2 | |||
| none. | |||
| none. | |||
| none. | |||
Calculated Properties of Nealite |
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relectron=4.98 gm/cc |
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| Fermion Index = 0.14138 Boson Index = 0.85862 |
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PENealite =1,163.50 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Nealite is Not Radioactive |
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Nealite Classification |
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| 41.4.6.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen | |||
| (41.4)where (A B)5 (XO4)2 Zq | |||
| (41.4.6)Dana Group | |||
| IV/J.03-50 IV - Oxides | |||
| IV/J - Arsenides with [AsO3]3- groups | |||
| IV/J.03 - Finnemanite - Nealite series | |||
Other Nealite Information |
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| NAME( 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 -Google Images 6 -Google Scholar 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 Nealite using: Visit our Advertisers for Nealite : Translate Nealite Mineral Data : Ask about Nealite here : Print or Cut-and-Paste your Nealite Specimen Label here :
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