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Lazurite Mineral Data + |
General Lazurite Information |
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| Na3Ca(Al3Si3O12)S | |||
| Molecular Weight = 498.31 gm | |||
| Sodium 13.84 % Na 18.66 % Na2O | |||
| Calcium 8.04 % Ca 11.25 % CaO | |||
| Aluminum 16.24 % Al 30.69 % Al2O3 | |||
| Silicon 16.91 % Si 36.17 % SiO2 | |||
| Sulfur 6.43 % S 6.43 % S2- | |||
| - % S -3.21 % -O=S | |||
| Oxygen 38.53 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Na3CaAl3Si3O12S | |||
| Valid Species (Pre-IMA) 1890 | |||
| District of Badakhshan, Afghanistan. Link to MinDat.org Location Data. | |||
| From the Persian lazward - "blue." | |||
| Lapis lazuli | |||
| Lasurite | |||
| Sapphiros of Pliny | |||
| Ultamarine pigment | |||
Lazurite Image | |||
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Lazurite Crystallography |
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| a = 9.105, Z = 2; V = 754.81 Den(Calc)= 2.19 | |||
| Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: P 43n | |||
| By Intensity(I/Io): 3.71(1), 2.62(0.8), 2.87(0.45), | |||
Physical Properties of Lazurite |
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| [110] Imperfect | |||
| Blue, Azure blue, Violet blue, Greenish blue. | |||
| 2.38 - 2.42, Average = 2.4 | |||
| Translucent | |||
| Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | |||
| Massive - Granular - Common texture observed in granite and other igneous rock. | |||
| 5.5 - Knife Blade | |||
| Fluorescent. | |||
| Vitreous - Dull | |||
| light blue | |||
Optical Properties of Lazurite |
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| CI meas= -0.076 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= -0.179 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2333,KPDmeas= 0.2129,KC= 0.1979 |
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| Isotropic, n=1.5-1.522. | |||
Calculated Properties of Lazurite |
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relectron=2.37 gm/cc |
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| Fermion Index = 0.00867 Boson Index = 0.99133 |
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PELazurite = 2.67 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Lazurite is Not Radioactive |
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Lazurite Classification |
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| 76.2.3.4 (76)Tectosilicate Al-Si Framework | |||
| (76.2)Feldspathoids and related species | |||
| (76.2.3)Sodalite group | |||
| VIII/J.11-40 VIII - Silicates | |||
| VIII/J - Tectosilicates (network) with anions unfamiliar to the tetraheders | |||
| VIII/J.11 - Sodalite group, Tsaregorodtsevite - Wadalite series | |||
Other Lazurite Information |
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| NAME( Duda&Rejl90) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Lazurite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - Crocoite.com Mineral Locations 6 - EUROmin Project 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (MinSocAm) 10 -Handbook of Mineralogy (UofA) 11 -MinDAT 12 -MinMax(Deutsch) 13 -MinMax(English) 14 -Mineralienatlas (Deutsch) 15 -QUT Mineral Atlas 16 - Tradeshop.com - The Rainbow of Gems 17 - WWW-MINCRYST 18 -École des Mines de Paris Search for Lazurite using: Visit our Advertisers for Lazurite : Translate Lazurite Mineral Data : Ask about Lazurite here : Print or Cut-and-Paste your Lazurite Specimen Label here :
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