Beryl Mineral Data (original) (raw)

General Beryl Information

Help on Chemical Formula: Chemical Formula:

Be3Al2Si6O18

Help on Composition: Composition:

Molecular Weight = 537.50 gm

Beryllium 5.03 % Be 13.96 % BeO

Aluminum 10.04 % Al 18.97 % Al2O3

Silicon 31.35 % Si 67.07 % SiO2

Oxygen 53.58 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Be3Al2Si6O18

Help on Environment: Environment:

Mainly granitic pegmatites.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) Prehistoric

Help on Locality: Locality:

Pala pegmatite District, San Diego Co., California for morganite. Columbia for emeralds. Russia for heliodor. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

From the ancient Greek, beryllos, signifying a "precious blue-green color of sea water" stone, but through later usage, applied only to beryl.

Help on Name Pronunciation: Name Pronunciation:

Beryl Say BERYL

Help on Synonym: Synonym:

Aquamarine - Blue varitey

Emerald - green

Goshenite - colorless

Heliodor - yellow

ICSD 2791

Morganite - pink

PDF 9-430

Beryl Image

Click Here for Larger Beryl Image in a New Browser Window Images:

Click Here for Larger Beryl Image Beryl Comments: Transparent Goshenite, the colorless variety of beryl with orthoclase and muscovite. Location: Pingwu, Sichuan, China.Scale: 9 x 8.5 cm. © Fabre Minerals

Click Here for Larger Beryl Image in a New Browser Window Images:

Click Here for Larger Beryl Image Beryl Comments: Transparent Aquamarine, the blue variety of beryl. Location: Nagar, Pakistan.Scale: 3 x 4 x 8.5 cm. © Dan Weinrich

Click Here for Larger Beryl Image in a New Browser Window Images:

Click Here for Larger Beryl Image Beryl Calcite Comments: Transparent emerald, the green variety of beryl on calcite (marble) matrix. Location: Coscuez, Boyacá, Colombia.Scale: 2.5 x 2.5 cm. © Fabre Minerals

Click Here for Larger Beryl Image in a New Browser Window Images:

Click Here for Larger Beryl Image Beryl Comments: Transparent Morganite, the pink variety of beryl. Location: Nuristan, Laghman Province, Afghanistan.Scale: 9.2 x 6.5 cm. © John Veevaert

Click Here for Larger Beryl Image in a New Browser Window Images:

Click Here for Larger Beryl Image Beryl Comments: Transparent Heliodor, the yellow variety of beryl. Location: Wolodarsk, Wolynsky, Ukraine.Scale: 2.8 x 0.7 cm. © John Veevaert

Click Here for Larger Beryl Image in a New Browser Window Images:

Click Here for Larger Beryl Image in a New Browser Window Images:

Click Here for Larger Beryl Image Beryl Apatite-(CaF) Muscovite Apatite Comments: Pink crystals of fluorapatite with pale blue beryl (aquamarine) on books of muscovite crystals. Location: Nagar area, Gilgit district, Northern Areas, Pakistan.Scale: 3 x 3 cm. © Dan Weinrich

Beryl Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:0.9975

Help on Cell Dimensions: Cell Dimensions:

a = 9.215, c = 9.192, Z = 2; V = 675.98 Den(Calc)= 2.64

Help on Crystal System: Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6/mmc

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.867(1), 3.254(0.95), 7.98(0.9),

Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
- Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

| | Forms:( 1 1 2) ( 2 1 2) ( 0 0 1) ( 1 0 2) ( 1 0 0) ( 1 1 0) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

Click Here for Large Beryl Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

| | Brown G E , Mills B A , American Mineralogist , 71 (1986) p.547-556, High-temperature structure and crystal chemistry of hydrous alkali-rich beryl, from the Harding pegmatite, Taos County, New Mexico, Sample: T = 24 deg C, before heating, O2x has been corrected View Additional jPOWD Structure files for Beryl [1] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [2] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [3] [30] [31] [32] [33] [4] [5] [6] [7] [8] [9] | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

Physical Properties of Beryl

Help on Cleavage: Cleavage:

{0001} Imperfect

Help on Color: Color:

Green, Blue, Yellow, Colorless, Pink.

Help on Density: Density:

2.63 - 2.9, Average = 2.76

Help on Diaphaneity: Diaphaneity:

Transparent to subtranslucent

Help on Fracture: Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Help on Habit: Habit:

Columnar - Forms columns

Help on Habit: Habit:

Crystalline - Coarse - Occurs as well-formed coarse sized crystals.

Help on Habit: Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Help on Hardness: Hardness:

7.5-8

Help on Luminescence: Luminescence:

Non-fluorescent.

Help on Luster: Luster:

Vitreous - Resinous

Help on Streak: Streak:

white

Optical Properties of Beryl

Help on Dichroism (e): Dichroism (e):

yellowish green, colorless, or colorless.

Help on Dichroism (w): Dichroism (w):

bluish green, blue, or pink.

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.039 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2205,KPDmeas= 0.2106,KC= 0.2123
Ncalc = 1.56 - 1.62

Help on Optical Data: Optical Data:

Uniaxial (-), e=1.564-1.595, w=1.568-1.602, bire=0.0040-0.0070.

Calculated Properties of Beryl

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.74 gm/cc
note: Specific Gravity of Beryl =2.77 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Help on Photoelectric: Photoelectric:

PEBeryl = 1.55 barns/electron
U=PEBeryl x rElectron Density= 4.24 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Beryl is Not Radioactive

Beryl Classification

Help on Dana Class: Dana Class:

61.01.01.01 (61)Cyclosilicate Six-Membered Rings

(61.01)with [Si6O18] rings; possible (OH) and Al substitution

(61.01.01)Beryl group

61.01.01.01 Beryl Be3Al2Si6O18 P 6/mmc 6/m 2/m 2/m

61.01.01.02 Bazzite Be3(Sc,Al)2Si6O18 P 6/mcc 6/m 2/m 2/m

61.01.01.03 Indialite Mg2Al4Si5O18 P 6/mcc 6/m 2/m 2/m

61.01.01.04 Stoppaniite! (Fe,Al,Mg)4(Na,[])2[Be6Si12O36]•2(H2O) P 6/mmc 6/m 2/m 2/m

61.01.01.05 Pezzottaite! Cs(Be2Li)Al2Si6O18 R 3c 3m

Help on Strunz Class: Strunz Class:

09.CJ.05 09 - SILICATES (Germanates)

09.C - Cyclosilicates

09.CJ -[Si6O18]12- 6-membered single rings (sechser-Einfachringe),

09.CJ.05 Beryl Be3Al2Si6O18 P 6/mmc 6/m 2/m 2/m

09.CJ.05 Bazzite Be3(Sc,Al)2Si6O18 P 6/mcc 6/m 2/m 2/m

09.CJ.05 Indialite Mg2Al4Si5O18 P 6/mcc 6/m 2/m 2/m

09.CJ.05 Stoppaniite! (Fe,Al,Mg)4(Na,[])2[Be6Si12O36]•2(H2O) P 6/mmc 6/m 2/m 2/m

09.CJ.05 Pezzottaite! Cs(Be2Li)Al2Si6O18 R 3c 3m

Other Beryl Information

Help on References: References:

NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)

Help on See Also: See Also:

Links to other databases for Beryl :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - CalTech Mineral Spectroscopy
7 - EUROmin Project
8 - Ecole des Mines de Paris
9 - GeoScienceWorld
10 - Glendale Community College
11 - Google Images
12 - Google Scholar
13 - Handbook of Mineralogy (MinSocAm)
14 - Handbook of Mineralogy (UofA)
15 - HyperPhysics
16 - MinDAT
17 - Mineral and Gemstone Kingdom
18 - Mineralienatlas (Deutsch)
19 - NSDL Reciprocal Net (JAVA)
20 - NSDL Reciprocal Net (JAVA)
21 - Online Mineral Museum
22 - Philatelic Mineralogy
23 - QUT Mineral Atlas
24 - Ruff.Info
25 - Scandinavian mineral gallery
26 - Tradeshop.com - The Rainbow of Gems
27 - University of Texas at Austin
28 - WWW-MINCRYST
29 - YupRocks
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Beryl :

A Bijoux Google Search for Beryl
Adam's Minerals Google Search for Beryl
Cape Minerals Google Search for Beryl
Dakota Matrix Minerals Google Search for Beryl
Excalibur Mineral Corp. Google Search for Beryl
Exceptional Minerals Google Search for Beryl
John Betts Fine Minerals Search for Beryl
McDougall Minerals Google Search for Beryl
Mineral News Website Link
Rock and Mineral Shows Google Search for Beryl
Weinrich Minerals, Inc. Google Search for Beryl

Ask about Beryl here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

Print or Cut-and-Paste your Beryl Specimen Label here :

Beryl

Be3Al2Si6O18
Dana No: 61.01.01.01 Strunz No: 09.CJ.05
Locality:

Notes: