Beryllite Mineral Data + 
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- 52.1.1.1 Beryllite Be3SiO4(OH)2·(H2O) Unk Ortho
- VIII/B.01-10 Euclase BeAlSiO4(OH) P 21/a 2/m
- VIII/B.01-20 Hodgkinsonite MnZn2SiO4(OH)2 P 21/c 2/m
- VIII/B.01-25 Sphaerobertrandite Be3SiO4(OH)2 P 2 2
- VIII/B.01-30 Beryllite Be3SiO4(OH)2·(H2O) Unk Ortho
General Beryllite Information |
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 Chemical Formula: |
Be3SiO4(OH)2·(H2O) | ||
| Composition: |
Molecular Weight = 171.15 gm | ||
| Beryllium 15.80 % Be 43.84 % BeO | |||
| Silicon 16.41 % Si 35.11 % SiO2 | |||
| Hydrogen 2.36 % H 21.05 % H2O | |||
| Oxygen 65.44 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Be3(SiO4)(OH)2·(H2O) | ||
| Environment: |
In alkaline pegmatites. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1954 | ||
| Locality: |
Lovozero massif, Koa Peninsula, Russia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named in allusion to the beryllium content. | ||
Beryllite Image | |||
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Images:
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Beryllite Crystallography |
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| Crystal System: |
OrthorhombicSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.34(1), 4.01(1), 3.64(0.9), | ||
Physical Properties of Beryllite |
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| Color: |
White. | ||
| Density: |
2.196 | ||
| Diaphaniety: |
Transparent | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Habit: |
Fibrous - Crystals made up of fibers. | ||
| Habit: |
Spherical - Spherical, rounded aggregates. | ||
| Hardness: |
1 - Talc | ||
| Luminescence: |
Fluorescent. | ||
| Luster: |
Silky | ||
| Streak: |
white | ||
Optical Properties of Beryllite |
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| Gladstone-Dale: |
CI meas= -0.005 (Superior) - where the CI = (1-KPDmeas/KC) KPDmeas= 0.2511,KC= 0.2498 |
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| Optical Data: |
Biaxial (-), a=1.541, b=1.553, g=1.56, bire=0.0190 | ||
| Pleochroism (x): |
colorless. | ||
| Pleochroism (y): |
colorless. | ||
| Pleochroism (z): |
colorless. | ||
Calculated Properties of Beryllite |
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| Electron Density: |
relectron=2.21 gm/cc |
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| Fermion Index |
Fermion Index = 0.16595 Boson Index = 0.83405 |
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| Photoelectric: |
PEBeryllite = 0.84 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Beryllite is Not Radioactive |
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Beryllite Classification |
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| Dana Class: |
52.1.1.1 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O | ||
| (52.1)with cations in [4] coordination | |||
| (52.1.1)Dana Group | |||
| Strunz Class: |
VIII/B.01-30 VIII - Silicates | ||
| VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6] | |||
| VIII/B.01 - Euclase series | |||
Other Beryllite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Beryllite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - Simple Thinking 14 -École des Mines de Paris Search for Beryllite using: Visit our Advertisers for Beryllite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals T G Fine Minerals Wrights Rock Shop Translate Beryllite Mineral Data : Ask about Beryllite here : Print or Cut-and-Paste your Beryllite Specimen Label here :
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