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Macphersonite Mineral Data + |
General Macphersonite Information |
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| Pb4(SO4)(CO3)2(OH)2 | |||
| Molecular Weight = 1,078.90 gm | |||
| Hydrogen 0.19 % H 1.67 % H2O | |||
| Lead 76.82 % Pb 82.75 % PbO | |||
| Carbon 2.23 % C 8.16 % CO2 | |||
| Sulfur 2.97 % S 7.42 % SO3 | |||
| Oxygen 17.80 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Pb4(SO4)(CO3)2(OH)2 | |||
| Polymorph of leadhillite and susannite. | |||
| Approved IMA 1985 | |||
| Leadhills, Lanarkshire, Scotland. Link to MinDat.org Location Data. | |||
| Named after Harry Gordon Macpherson (1925-), mineralogist at the Royal Scottish Museum, Edinburgh, Scotland. | |||
| ICSD 54153 | |||
| PDF 38-354 | |||
Macphersonite Image | |||
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Macphersonite Crystallography |
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| a:b:c =0.4489:1:0.4125 | |||
| a = 10.37, b = 23.1, c = 9.53, Z = 8; V = 2,282.88 Den(Calc)= 6.28 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcab | |||
| By Intensity(I/Io): 3.234(1), 2.654(0.9), 2.598(0.3), | |||
Physical Properties of Macphersonite |
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| [010] Perfect | |||
| White, Pale amber brown, Colorless. | |||
| 6.5 | |||
| Translucent to transparent | |||
| Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | |||
| Pseudo Hexagonal - Crystals show a hexagonal outline. | |||
| Tabular - Form dimensions are thin in one direction. | |||
| 2.5-3 - Finger Nail-Calcite | |||
| Fluorescent, Short UV=strong yellow, Long UV=strong yellow. | |||
| Adamantine - Resinous | |||
| white | |||
Optical Properties of Macphersonite |
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| CI meas= -0.011 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.046 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1529,KPDmeas= 0.1477,KC= 0.1461 |
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| Biaxial (-), a=1.87, b=2, g=2.01, bire=0.1400, 2V(Calc)=28, 2V(Meas)=35. Dispersion r > v. | |||
Calculated Properties of Macphersonite |
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relectron=5.47 gm/cc |
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| Fermion Index = 0.17032 Boson Index = 0.82968 |
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PEMacphersonite =1,401.45 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Macphersonite is Not Radioactive |
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Macphersonite Classification |
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| 17.1.4.1 (17)Compound Carbonates | |||
| (17.1)with miscellaneous formulae | |||
| (17.1.4)Dana Group | |||
| VI/B.13-60 VI - Sulfates,Chromates,Molybdates and Tungstates | |||
| VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. mostly big cations | |||
| VI/B.13 - Lanarkite - Susannite series | |||
Other Macphersonite Information |
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| NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | |||
| Links to other databases for Macphersonite : 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 Macphersonite using: Visit our Advertisers for Macphersonite : Translate Macphersonite Mineral Data : Ask about Macphersonite here : Print or Cut-and-Paste your Macphersonite Specimen Label here :
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