Bearsite Mineral Data

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


General Bearsite Information

Help on Chemical Formula: Chemical Formula: Be2(AsO4)(OH)•4(H2O)
Help on Composition: Composition: Molecular Weight = 246.01 gm
   Beryllium   7.33 %  Be   20.33 % BeO
   Arsenic    30.45 %  As   46.71 % As2O5
   Hydrogen    3.69 %  H    32.95 % H2O
   Oxygen     58.53 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Be2(AsO4)(OH)•4(H2O)
Help on Environment: Environment: Oxidation zone of a polymetallic deposit.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition (Be, Arsenic).
Help on Name Pronunciation: Name Pronunciation: Bearsite Say BEARSITE
Help on Synonym: Synonym: ICSD 74041
  PDF 45-378
 

Search for Bearsite Images

Click Here To Search Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.
  

Bearsite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.2317:1:0.1932
Help on Cell Dimensions: Cell Dimensions: a = 8.55, b = 36.9, c = 7.13, Z = 12; beta = 97.816° V = 2,228.58 Den(Calc)= 2.20
Help on Crystal System: Crystal System: MonoclinicSpace Group: Cc or C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.95(1), 3.31(0.8), 4.23(0.6),
Click Here for Large Bearsite 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


Harrison W T A , Nenoff T M , Gier T E , Stucky G D , Inorganic Chemistry , 32 (1993) p.2437-2441, Tetrahedral-atom 3-ring groupings in 1-dimensional inorganic chains:, Be2AsO4OH*4H2O and Na2ZnPO4OH*7H2O, Locality: synthetic

 

Physical Properties of Bearsite

Help on Color: Color: White.
Help on Density: Density: 1.8 - 2, Average = 1.9
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Streak: Streak: white
 

Optical Properties of Bearsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.108 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.043 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2264,KPDmeas= 0.2621,KC= 0.2365
Ncalc = 1.43 - 1.52
Help on Optical Data: Optical Data: Biaxial (-), a=1.49, b=1.502, g=1.502, bire=0.0120
 

Calculated Properties of Bearsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.18 gm/cc
note: Specific Gravity of Bearsite =2.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEBearsite = 20.07 barns/electron
U=PEBearsite x rElectron Density= 43.79 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bearsite is Not Radioactive
 

Bearsite Classification
Help on Dana Class: Dana Class: 42.06.01.02 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.06)where (AB)2 (XO4) Zq · x(H2O)
  (42.06.01)Moraesite Group
 
42.06.01.01 Moraesite Be2(PO4)(OH)•4(H2O) Cc,C 2/c Mono
 
42.06.01.02 Bearsite Be2(AsO4)(OH)•4(H2O) Cc or C 2/c Mono
Help on Strunz Class: Strunz Class: 08.DA.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DA -With small (and occasionally larger) cations
 
08.DA.05 Bearsite Be2(AsO4)(OH)•4(H2O) Cc or C 2/c Mono
 
08.DA.05 Moraesite Be2(PO4)(OH)•4(H2O) Cc,C 2/c Mono
 

Other Bearsite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Bearsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Bearsite using:

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

Visit our Advertisers for Bearsite :

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

Ask about Bearsite 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 Bearsite Specimen Label here :

Bearsite

Be2(AsO4)(OH)•4(H2O)
Dana No: 42.06.01.02 Strunz No: 08.DA.05
Locality:

 

Notes: