Massicot Mineral Data + 
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- 4.2.7.1 Massicot PbO Pbma 2/m 2/m 2/m
- IV/A.06-10 Montroydite HgO P nma 2/m 2/m 2/m
- IV/A.06-20 Litharge PbO P 4/nmm 4/m 2/m 2/m
- IV/A.06-30 Massicot PbO Pbma 2/m 2/m 2/m
General Massicot Information |
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 Chemical Formula: |
PbO | ||
| Composition: |
Molecular Weight = 223.20 gm | ||
| Lead 92.83 % Pb 100.00 % PbO | |||
| Oxygen 7.17 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
PbO | ||
| Environment: |
Rare mineral of secondary origin associated with galena. Dimorphous with litharge. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1841 | ||
| Locality: |
Stolberg, near Aachen, Germany. Link to MinDat.org Location Data. | ||
| Name Origin: |
French name for lead oxide. | ||
| Synonym: |
ICSD 15402 | ||
| Lead Monoxide | |||
| PDF 38-1477 | |||
Massicot Image | |||
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Images:
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Images:
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Massicot Crystallography |
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| Axial Ratios: |
a:b:c =1.1558:1:1.2405 | ||
| Cell Dimensions: |
a = 5.459, b = 4.723, c = 5.859, Z = 4; V = 151.06 Den(Calc)= 9.81 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbma | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.067(1), 2.946(0.31), 2.744(0.28), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Massicot |
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| Cleavage: |
[100] Distinct, [010] Distinct | ||
| Color: |
Yellow, Reddish yellow. | ||
| Density: |
9.642 | ||
| Diaphaniety: |
Translucent | ||
| Fracture: |
Flexible - Flexible fragments. | ||
| Habit: |
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite). | ||
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. | ||
| Habit: |
Scaly - Morphology like fish scales. | ||
| Hardness: |
2 - Gypsum | ||
| Luminescence: |
Non-fluorescent. | ||
| Luster: |
Adamantine | ||
| Streak: |
light yellow | ||
Optical Properties of Massicot |
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| Gladstone-Dale: |
CI meas= -0.255 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.234 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1641,KPDmeas= 0.167,KC= 0.133 |
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| Optical Data: |
Biaxial (+), a=2.51, b=2.61, g=2.71, bire=0.2000, 2V(Calc)=86, 2V(Meas)=90. Dispersion none. | ||
Calculated Properties of Massicot |
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| Electron Density: |
relectron=7.91 gm/cc |
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| Fermion Index |
Fermion Index = 0.20519 Boson Index = 0.79481 |
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| Photoelectric: |
PEMassicot =1,767.06 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Massicot is Not Radioactive |
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Massicot Classification |
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| Dana Class: |
4.2.7.1 (4)Simple Oxides | ||
| (4.2)with a cation charge of 2+ (A++ O) | |||
| (4.2.7)Dana Group | |||
| Strunz Class: |
IV/A.06-30 IV - Oxides | ||
| IV/A - Oxides with metal : oxygen = 1:1 and 2:1 (M2O,MO) | |||
| IV/A.06 - Periclase Group, Montroydite - Massicotite series | |||
Other Massicot Information |
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| References: |
NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Massicot : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - Crocoite.com Mineral Locations 5 - EUROmin Project 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 - WWW-MINCRYST 15 -École des Mines de Paris Search for Massicot using: Visit our Advertisers for Massicot : Translate Massicot Mineral Data : Ask about Massicot here : Print or Cut-and-Paste your Massicot Specimen Label here :
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