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Natrolite Mineral Data |
General Natrolite Information |
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Na2[Al2Si3O10]•2(H2O) | ||
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Molecular Weight = 380.22 gm | ||
Sodium 12.09 % Na 16.30 % Na2O | |||
Aluminum 14.19 % Al 26.82 % Al2O3 | |||
Silicon 22.16 % Si 47.41 % SiO2 | |||
Hydrogen 1.06 % H 9.48 % H2O | |||
Oxygen 50.49 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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Na2Al2Si3O10•2(H2O) | ||
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Occurs in the cavities of amygdaloidal basalts and other related rocks. | ||
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Valid Species (Pre-IMA) 1803 | ||
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Bohemia of Czechoslovakia. Link to MinDat.org Location Data. | ||
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From the Greek natron, "soda," in allusion to sodium content and lithos - "stone." | ||
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Natrolite + Pronunciation ![]() |
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Aedelite | ||
Apoanalcite | |||
Bergmannite | |||
Mesotype | |||
Natrolite Image | |||
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Natrolite Crystallography |
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a:b:c =0.9829:1:0.3529 | ||
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a = 18.27, b = 18.587, c = 6.56, Z = 8; V = 2,227.67 Den(Calc)= 2.27 | ||
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Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: F dd2 | ||
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By Intensity(I/Io): 2.85(1), 5.89(0.85), 2.87(0.8), | ||
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Physical Properties of Natrolite |
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{110} Perfect, {010} Imperfect | ||
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White, Colorless, Red, Yellowish white, Reddish white. | ||
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2.25 | ||
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Transparent to translucent | ||
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Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
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Acicular - Occurs as needle-like crystals. | ||
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Nodular - Tuberose forms having irregular protuberances over the surface. | ||
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Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
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5.5-6 - Knife Blade-Orthoclase | ||
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Fluorescent, Short UV=ellow-orange pale green, Long UV=ellow-orange greenish white. | ||
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Vitreous - Silky | ||
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white | ||
Optical Properties of Natrolite |
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CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.015 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2141,KPDmeas= 0.216,KC= 0.2173 Ncalc = 1.49 |
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Biaxial (+), a=1.473-1.489, b=1.476-1.491, g=1.485-1.502, bire=0.0120-0.0130, 2V(Calc)=48-62, 2V(Meas)=60-63. Dispersion weak, r < v. | ||
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colorless. | ||
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colorless. | ||
Calculated Properties of Natrolite |
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Bulk Density (Electron Density)=2.25 gm/cc note: Specific Gravity of Natrolite =2.25 gm/cc. |
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Fermion Index = 0.01 Boson Index = 0.99 |
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PENatrolite = 1.48 barns/electron U=PENatrolite x rElectron Density= 3.32 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Natrolite is Not Radioactive |
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Natrolite Classification |
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77.01.05.01 (77)Tectosilicate Zeolite group | ||
(77.01)true zeolites | |||
(77.01.05)Natrolite and related species | |||
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09.GA.05 09 - SILICATES (Germanates) | ||
09.G - Tektosilicates with Zeolitic H2O | |||
09.GA -Zeolites with T5O10 Units � The Fibrous Zeolites | |||
Other Natrolite Information |
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Links to other databases for Natrolite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Athena 6 - EUROmin Project 7 - Ecole des Mines de Paris 8 - Franklin Minerals(Dunn) 9 - GeoScienceWorld 10 - Glendale Community College 11 - Google Images 12 - Google Scholar 13 - Handbook of Mineralogy (MinSocAm) 14 - Handbook of Mineralogy (UofA) 15 - MinDAT 16 - Mineralienatlas (Deutsch) 17 - Online Mineral Museum 18 - QUT Mineral Atlas 19 - Ruff.Info 20 - Scandinavian mineral gallery 21 - WWW-MINCRYST Search for Natrolite using: Visit our Advertisers for Natrolite : Ask about Natrolite here : Print or Cut-and-Paste your Natrolite Specimen Label here :
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