Euclase  Mineral Data

Euclase Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About

Advertisment

[Newest Minerals] [Mineral Auctions] [Mineral Gallery]
The Mineral Gallery's Exceptional Specimens and Mineral Hall of Fame
Visa, PayPal, and Mastercard are Welcomed


General Euclase Information

Help on Chemical  Formula: Chemical Formula: BeAlSiO4(OH)
Help on Composition: Composition: Molecular Weight = 145.08 gm
   Beryllium   6.21 %  Be   17.24 % BeO
   Aluminum   18.60 %  Al   35.14 % Al2O3
   Silicon    19.36 %  Si   41.41 % SiO2
   Hydrogen    0.69 %  H     6.21 % H2O
   Oxygen     55.14 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BeAl(SiO4)(OH)
Help on Environment: Environment: Hydrothermal, pegmatitic, and alluvial rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1792
Help on Locality: Locality: Orenburg district in the southern Urals, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek eu - "well" and klasis - "breaking."
Help on Name Pronunciation: Name Pronunciation: Euclase Say EUCLASE
Help on Synonym: Synonym: ICSD 202094
  PDF 14-65
 

Euclase Image

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

Euclase

Comments: Euclase with sharp edges and great color. This specimen is from one of the famous and finest world finds of euclase, in the Colombian Emeralds area.
Location: Chivor, Columbia. Scale: 1.2 x 0.6 cm.
© Fabre Minerals

Euclase Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3333:1:0.3231
Help on Cell Dimensions: Cell Dimensions: a = 4.763, b = 14.29, c = 4.618, Z = 4; beta = 100.3° V = 309.25 Den(Calc)= 3.12
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.15(1), 3.219(0.5), 3.836(0.35),
Click Here for Large Euclase 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


Hazen R M , Au A Y , Finger L W , American Mineralogist , 71 (1986) p.977-984, High-pressure crystal chemistry of beryl (Be3Al2Si6O18) and euclase (BeAlSiO4OH), Sample: Pressure = .001 kbar

View Additional jPOWD Structure files for Euclase
[1] [2] [3] [4]
 

Physical Properties of Euclase

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Blue, Colorless, White, Light blue, Light green.
Help on Density: Density: 2.987 - 3.1, Average = 3.04
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 7.5 - Garnet
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Euclase

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2113,KPDmeas= 0.2166,KC= 0.2214
Ncalc = 1.66 - 1.69
Help on Optical Data: Optical Data: Biaxial (+), a=1.652, b=1.655, g=1.671, bire=0.0190, 2V(Calc)=48, 2V(Meas)=50. Dispersion none.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
 

Calculated Properties of Euclase

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.02 gm/cc
note: Specific Gravity of Euclase =3.04 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEEuclase = 1.36 barns/electron
U=PEEuclase x rElectron Density= 4.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Euclase is Not Radioactive
 

Euclase Classification

Help on  Dana Class: Dana Class: 52.02.01.01 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.02)with cations in [4] and >[4] coordination
  (52.02.01)Euclase group
 
52.02.01.01 Euclase BeAlSiO4(OH) P 21/a 2/m
 
52.02.01.02 Clinohedrite CaZnSiO4•(H2O) Aa m
 
52.02.01.03 Hodgkinsonite MnZn2SiO4(OH)2 P 21/c 2/m
 
52.02.01.04 Gerstmannite (Mg,Mn)2ZnSiO4(OH)2 Bbam 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.AE.10 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AE -Nesosilicates with additional (O,OH,F,H2O);
 
09.AE.10 Euclase BeAlSiO4(OH) P 21/a 2/m
 

Other Euclase Information

Help on See Also: See Also: Links to other databases for Euclase :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - CalTech Mineral Spectroscopy
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - Philatelic Mineralogy
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - Scandinavian mineral gallery
19 - Tradeshop.com - The Rainbow of Gems
20 - WWW-MINCRYST

Search for Euclase using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Euclase :

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

Ask about Euclase 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 Espaņol

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

Euclase

BeAlSiO4(OH)
Dana No: 52.02.01.01 Strunz No: 09.AE.10
Locality:

 

Notes: