Petewilliamsite Mineral Data

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



[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop


General Petewilliamsite Information

Help on Chemical Formula: Chemical Formula: (Ni,Co,Cu)30(As2O7)15
Help on Composition: Composition: Molecular Weight = 5,730.36 gm
   Calcium   0.12 %  Ca    0.17 % CaO
   Iron      0.03 %  Fe    0.04 % FeO
   Cobalt   14.21 %  Co   18.07 % CoO
   Copper    2.67 %  Cu    3.35 % CuO
   Nickel   15.01 %  Ni   19.11 % NiO
   Arsenic  38.64 %  As   59.26 % As2O5
   Oxygen   29.32 %  O
           ______        ______ 
           100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni14.66Co13.82Cu2.41Ca0.17Fe2+0.0315(As1.97)15(O7)
Help on Environment: Environment: In a fine-grained quartz specimen. It is the only known natural pyroarsenate.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Johanngeorgenstadt, Saxony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Peter (Pete) Allan Williams (b. 1950), Professor, Minerals and Materials Group, School of Science, Food and Horticulture, University of Western Sydney, Penrith South DC, N ew South Wales, Australia.
Help on Synonym: Synonym: IMA2002-059
 

Petewilliamsite Image

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

Petewilliamsite

Comments: SEM image of a portion of a petewilliamsite aggregate. Note the rounded nature of the crystal faces. (Min. Mag. 68:235).
Location: Johanngeorgenstadt, Saxony, Germany. Scale: See Image.
© Mineralogical Magazine

Petewilliamsite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =3.9208:1:1.6731
Help on Cell Dimensions: Cell Dimensions: a = 33.256, b = 8.4818, c = 14.191, Z = 1; beta = 104.145° V = 3,881.50 Den(Calc)= 2.45
Help on Crystal System: Crystal System: Monoclinic - SphenoidalH-M Symbol (2) Space Group: C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.118(1)(513,023), 3.005(0.6)(10.0.3), 1.637(0.5)(536),2.567(0.5)(10.2.0), 1.507(0.3)(553,15.3.3,204.235(0.3)(020),
Click Here for Large Petewilliamsite 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


Roberts A C , Burns P C , Gault R A , Criddle A J , Feinglos M N , Mineralogical Magazine , 68 (2004) p.231-240, Petewilliamsite, (Ni,Co)30(As2O7)15, a new mineral from Johanngeorgenstadt,, Saxony, Germany: description and crystal structure, Locality: Johanngeorgenstadt, Saxony, Germany

 

Physical Properties of Petewilliamsite

Help on Cleavage: Cleavage: None
Help on Color: Color: Dark violet red, Dark brownish red.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Hardness: Hardness: 1.5-2.5 - Hardness very near Gypsum
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: pale reddish brown
 

Optical Properties of Petewilliamsite

Help on Optical Data: Optical Data: NCalc= 1.41 - from Gladstone-Dale relationship (KC = 0.1681) where Ncalc=Dcalc*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Not obvious.
Help on RL Bireflectance: RL Bireflectance: None.
Help on RL Color: RL Color: Dark gray with orange internal reflections.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Petewilliamsite in Air
λ R  ∑ R(λ) 
 400 nm    9.84   
 420 nm    9.85 
 440 nm    9.71 
 460 nm    9.63 
 470 nm    9.59 
 480 nm    9.55 
 500 nm    9.49 
 520 nm    9.39 
 540 nm    9.33 
 546 nm    9.32 
 560 nm    9.29 
 580 nm    9.33 
 589 nm    9.27 
 600 nm    9.33 
 620 nm    9.29 
 640 nm    9.33 
 650 nm    9.33 
 660 nm    9.32 
 680 nm    9.31 
 700 nm    9.30 
Calculated Relative Intensity Colors of Petewilliamsite in Air
Relative
Intensity		    0% 100% 200% 300% 400% 500% 600% 700% 800% 900% 940%
R                      
 

Calculated Properties of Petewilliamsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Petewilliamsite =2.45 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0018451825
Boson Index = 0.9981548175
Help on Photoelectric: Photoelectric: PEPetewilliamsite = 39.26 barns/electron
U=PEPetewilliamsite x rElectron Density= 89.74 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Petewilliamsite is Not Radioactive
 

Petewilliamsite Classification
Help on Dana Class: Dana Class: 38.04.13.01 (38)Anhydrous Phosphates, etc
  (38.04)A+ XO4
  (38.04.13)Dana Group
 
38.04.13.01 Petewilliamsite! (Ni,Co,Cu)30(As2O7)15 C 2 2
Help on Strunz Class: Strunz Class: 08.FA.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.F - Polyphosphates, Polyarsenates, [4]-Polyvanadates
  08.FA -Polyphosphates, etc., without OH and H2O; dimers of corner-sharing RO4 tetrahedra.
 
08.FA.25 Petewilliamsite! (Ni,Co,Cu)30(As2O7)15 C 2 2
 

Other Petewilliamsite Information
Help on References: References: NAME( CanMin, 42:1922) PHYS. PROP.(CanMin, 42:1922) OPTIC PROP.(MinMag, 68:235)
Help on See Also: See Also: Links to other databases for Petewilliamsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Petewilliamsite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Petewilliamsite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Petewilliamsite Mineral Data :

Ask about Petewilliamsite 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 Petewilliamsite Specimen Label here :

Petewilliamsite

(Ni,Co,Cu)30(As2O7)15
Dana No: 38.04.13.01 Strunz No: 08.FA.25
Locality:

 

Notes: