Wendwilsonite Mineral Data

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



[Localities] [Carat Weight] [Special Collections] [Diamond Lots] [Ordering Info]
See Also: [Excalibur Minerals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Special Collections of Rough Diamonds for Researchers and Collectors
Unparalled diversity of specimens from different locations


General Wendwilsonite Information

Help on Chemical Formula: Chemical Formula: Ca2(Mg,Co)(AsO4)2•2(H2O)
Help on Composition: Composition: Molecular Weight = 426.99 gm
   Calcium    18.77 %  Ca   26.27 % CaO
   Magnesium   4.27 %  Mg    7.08 % MgO
   Cobalt      3.45 %  Co    4.39 % CoO
   Arsenic    35.09 %  As   53.83 % As2O5
   Hydrogen    0.94 %  H     8.44 % H2O
   Oxygen     37.47 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Mg0.75Co0.25(AsO4)2•2(H2O)
Help on Environment: Environment: Found with calcite on serpentine in franklinite-willemite ore.
Help on IMA Status: IMA Status: Approved IMA 1987
Help on Locality: Locality: Sterling Hill mine, Ogdensburg, New Jersy, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Wendell E. Wilson (1946-), mineralogist, editor, and publisher of the Mineralogical Record.
Help on Name Pronunciation: Name Pronunciation: Wendwilsonite Say WENDWILSONITE
 

Wendwilsonite Image

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

Wendwilsonite

Comments: Gemmy crystals of wendwilsonite to 4 mm.
Location: Bou Azzer, Anti-Atlas Mts., Morocco. Scale: Picture size .5 cm.
© John Veevaert
Click Here for Larger Wendwilsonite Image in a New Browser Window Images:
Click Here for Larger Wendwilsonite Image

Wendwilsonite   Minrecordite

Comments: Wendell Wilson, publisher, editor-in-chief of the Mineralogical Record, and the person whom wendwilsonite was named after, kindly provided the mineral name pronunciations for minrecordite and wendwilsonite.
Location: Tucson Convention Center, 50th Tucson Gem and Mineral Show, February 14, 2004. Scale: NA.
© Dave Barthelmy

Wendwilsonite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.4496:1:0.4354
Help on Cell Dimensions: Cell Dimensions: a = 5.806, b = 12.912, c = 5.623, Z = 2; beta = 107.4° V = 402.25 Den(Calc)= 3.53
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.994(1), 2.766(0.8), 3.226(0.6),
Click Here for Large Wendwilsonite 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


Kolitsch U , Fleck M , European Journal of Mineralogy , 18 (2006) p.471-482, Third update on compounds with krohnkite-type chains: the crystal structure of, wendwilsonite [Ca2Mg(AsO4)2*2H2O] and the new triclinic structure types of, synthetic AgSc(CrO4)2*2H2O and M2Cu(Cr2O7)2*2H2O (M = Rb, Cs), Locality: Schneeberg, Saxony, Germany

 

Physical Properties of Wendwilsonite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Light pink, Dark pink, Red.
Help on Density: Density: 3.52
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light pink
 

Optical Properties of Wendwilsonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1992,KPDmeas= 0.1998,KC= 0.1931
Ncalc = 1.68
Help on Optical Data: Optical Data: Biaxial (+), a=1.694, b=1.703, g=1.713, bire=0.0190, 2V(Calc)=88, 2V(Meas)=87. Dispersion r < v.
Help on Pleochroism (x): Pleochroism (x): violet pink.
Help on Pleochroism (y): Pleochroism (y): rose pink.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Wendwilsonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.40 gm/cc
note: Specific Gravity of Wendwilsonite =3.53 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0047038609
Boson Index = 0.9952961391
Help on Photoelectric: Photoelectric: PEWendwilsonite = 27.25 barns/electron
U=PEWendwilsonite x rElectron Density= 92.72 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wendwilsonite is Not Radioactive
 

Wendwilsonite Classification
Help on Dana Class: Dana Class: 40.02.03.04 (40)Hydrated Phosphates, etc
  (40.02)where A++ (B++)2 (XO4) · x(H2O)
  (40.02.03)Roselite Subgroup (Monoclinic: P21/c)
 
40.02.03.01 Roselite Ca2(Co,Mg)(AsO4)2•2(H2O) P 21/c 2/m
 
40.02.03.02 Brandtite Ca2(Mn,Mg)(AsO4)2•2(H2O) P 21/c 2/m
 
40.02.03.03 Zincroselite Ca2Zn(AsO4)2•2(H2O) P 21/c 2/m
 
40.02.03.04 Wendwilsonite Ca2(Mg,Co)(AsO4)2•2(H2O) P 21/c 2/m
 
40.02.03.05 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m
Help on Strunz Class: Strunz Class: 08.CG.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CG -With large and medium-sized cations, RO4:H2O = 1:1
 
08.CG.10 Brandtite Ca2(Mn,Mg)(AsO4)2•2(H2O) P 21/c 2/m
 
08.CG.10 Roselite Ca2(Co,Mg)(AsO4)2•2(H2O) P 21/c 2/m
 
08.CG.10 Roselite-beta Ca2(Co,Mg)(AsO4)2•2(H2O) P 1 or P1 Tri
 
08.CG.10 Zincroselite Ca2Zn(AsO4)2•2(H2O) P 21/c 2/m
 
08.CG.10 Wendwilsonite Ca2(Mg,Co)(AsO4)2•2(H2O) P 21/c 2/m
 

Other Wendwilsonite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.72,p217-221,1987) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Wendwilsonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info

Search for Wendwilsonite using:

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

Visit our Advertisers for Wendwilsonite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Diamond Dan Publications

e-Rocks Auctions

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 Wendwilsonite Mineral Data :

Ask about Wendwilsonite 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 Wendwilsonite Specimen Label here :

Wendwilsonite

Ca2(Mg,Co)(AsO4)2•2(H2O)
Dana No: 40.02.03.04 Strunz No: 08.CG.10
Locality:

 

Notes: