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General Laurelite Information |
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 Chemical Formula: |
Pb7F12Cl2 | ||
| Composition: |
Molecular Weight = 1,749.29 gm | ||
| Lead 82.91 % Pb 89.32 % PbO | |||
| Chlorine 4.05 % Cl 4.05 % Cl | |||
| - % Cl -0.91 % -O=Cl2 | |||
| Fluorine 13.03 % F 13.03 % F | |||
| - % F -5.49 % -O=F2 | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Pb7F12Cl2 | ||
| Environment: |
In a vug isolated from acidic sulfate-rich solutions in the oxidized zone of a low-temperature Pb-Cu-Ag deposit. | ||
| IMA Status: |
Approved IMA 1989 | ||
| Locality: |
Grand Reef, Mine, Aravaipa District, Laural Canyon, Graham County, Arizona USA. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
| Name Pronunciation: |
Laurelite + Pronunciation  |
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| Synonym: |
ICSD 82415 | ||
| PDF 45-1457 | |||
Laurelite Image | |||
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Images:
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Laurelite Crystallography |
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| Axial Ratios: |
a:c = 1:0.38807 | ||
| Cell Dimensions: |
a = 10.267, c = 3.9844, Z = 1; V = 363.73 Den(Calc)= 7.99 | ||
| Crystal System: |
Hexagonal - Trigonal DipyramidalH-M Symbol (6) Space Group: P 6 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.33(1), 1.934(0.6), 1.282(0.4),1.709(0.4), 2.949(0.4), 3.125(0.4), 2.09(0.35), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Laurelite |
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| Cleavage: |
{0001} Imperfect | ||
| Color: |
Colorless. | ||
| Density: |
7.65 | ||
| Diaphaneity: |
Transparent | ||
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | ||
| Habit: |
Acicular - Occurs as needle-like crystals. | ||
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. | ||
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
| Hardness: |
2 - Gypsum | ||
| Luster: |
Silky | ||
| Streak: |
white | ||
Optical Properties of Laurelite |
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| Optical Data: |
Uniaxial (+), w=1.903, e=1.946, bire=0.0430. | ||
Calculated Properties of Laurelite |
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| Electron Density: |
Bulk Density (Electron Density)=6.54 gm/cc note: Specific Gravity of Laurelite =7.99 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.18 Boson Index = 0.82 |
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| Photoelectric: |
PELaurelite =1,555.20 barns/electron U=PELaurelite x rElectron Density=10172.21 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Laurelite is Not Radioactive |
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Laurelite Classification |
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| Dana Class: |
09.02.10.01 (09)Anhydrous and Hydrated Halides | ||
| (09.02)where A (X)2 | |||
| (09.02.10)Dana Group | |||
| Strunz Class: |
03.DC.20 03 - HALIDES | ||
| 03.D - Oxyhalides, Hydroxyhalides and Related Double Halides | |||
| 03.DC -With Pb (As,Sb,Bi), without Cu | |||
Other Laurelite Information |
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(AntBidBlaNic3) | ||
| See Also: |
Links to other databases for Laurelite : 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 15 - WWW-MINCRYST Search for Laurelite using: Visit our Advertisers for Laurelite : A Bijoux Google Search for LaureliteAdam's Minerals Google Search for Laurelite Cape Minerals Google Search for Laurelite Dakota Matrix Minerals Google Search for Laurelite Excalibur Mineral Corp. Google Search for Laurelite Exceptional Minerals Google Search for Laurelite John Betts Fine Minerals Search for Laurelite McDougall Minerals Google Search for Laurelite Mineral News Website Link Rock and Mineral Shows Google Search for Laurelite Weinrich Minerals, Inc. Google Search for Laurelite Ask about Laurelite here : Print or Cut-and-Paste your Laurelite Specimen Label here :
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