Krauskopfite Mineral Data

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


General Krauskopfite Information

Help on Chemical Formula: Chemical Formula: BaSi2O4(OH)2•2(H2O)
Help on Composition: Composition: Molecular Weight = 327.54 gm
   Barium    41.93 %  Ba   46.81 % BaO
   Silicon   17.15 %  Si   36.69 % SiO2
   Hydrogen   1.85 %  H    16.50 % H2O
   Oxygen    39.08 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaSi2O4(OH)2•2(H2O)
Help on Environment: Environment: In veins cutting sanbornite-quartz-bearing gneissic metamorphic rocks.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Big Creek - Rush Creek sanbornite deposit, 5 miles NE of Trimmer, Fresno Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Konrad Bates Krauskopf (1910- ), Professor of Geochemistry, Stanford University, Palo Alto, California, USA.
Help on Name Pronunciation: Name Pronunciation: Krauskopfite + Pronunciation Say KRAUSKOPFITE
Help on Synonym: Synonym: ICSD 26971
  PDF 18-192
 

Krauskopfite Image

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

Krauskopfite

Comments: White pearly crystalline krauskopfite on quartz.
Location: Rush Creek, Fresno County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Krauskopfite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.7964:1:0.7378
Help on Cell Dimensions: Cell Dimensions: a = 8.46, b = 10.622, c = 7.837, Z = 4; beta = 94.53° V = 702.05 Den(Calc)= 3.10
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): 3.84(1), 5.34(0.45), 6.36(0.45),
Click Here for Large Krauskopfite 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


Coda A , dal Negro A , Rossi G , Atti della Accademia Nazionale dei Lincei , 42 (1967) p.859-873, The crystal structure of krauskopfite, Locality: Rush Creek locality, Fresno County, California

 

Physical Properties of Krauskopfite

Help on Cleavage: Cleavage: {010} Perfect, {001} Perfect
Help on Color: Color: Colorless, White.
Help on Density: Density: 3.14
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Krauskopfite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.029 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1892,KPDmeas= 0.1868,KC= 0.1923
Ncalc = 1.6
Help on Optical Data: Optical Data: Biaxial (-), a=1.574, b=1.587, g=1.599, bire=0.0250, 2V(Calc)=86, 2V(Meas)=88.
 

Calculated Properties of Krauskopfite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.92 gm/cc
note: Specific Gravity of Krauskopfite =3.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PEKrauskopfite = 179.48 barns/electron
U=PEKrauskopfite x rElectron Density= 523.18 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Krauskopfite is Not Radioactive
 

Krauskopfite Classification
Help on Dana Class: Dana Class: 74.03.04.02 (74)Phyllosilicate Modulated Layers
  (74.03)with joined strips
  (74.03.04)Ba phyllosilicates
 
74.03.04.01 Sanbornite BaSi2O5 Pmnb 2/m 2/m 2/m
 
74.03.04.02 Krauskopfite BaSi2O4(OH)2•2(H2O) P 21/a 2/m
Help on Strunz Class: Strunz Class: 09.DH.30 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DH -Inosilicates with 4-periodic single chains, Si4O12
 
09.DH.30 Krauskopfite BaSi2O4(OH)2•2(H2O) P 21/a 2/m
 

Other Krauskopfite Information
Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Krauskopfite :
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
15 - WWW-MINCRYST

Search for Krauskopfite using:

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

Visit our Advertisers for Krauskopfite :

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

Ask about Krauskopfite 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 Krauskopfite Specimen Label here :

Krauskopfite

BaSi2O4(OH)2•2(H2O)
Dana No: 74.03.04.02 Strunz No: 09.DH.30
Locality:

 

Notes: