Kidwellite  Mineral Data

Kidwellite Mineral Data

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

Advertisment
Hudson Institute of Mineralogy
John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.
Weinrich Minerals, A Dealer in Fine Mineral Specimens - Since 1989. We buy collections and single high quality specimens.
McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs

General Kidwellite Information

Help on Chemical  Formula: Chemical Formula: Na(Fe+++,Cu)9+x(PO4)6(OH)11•3(H2O)
Help on Composition: Composition: Molecular Weight = 1,368.34 gm
   Sodium       1.68 %  Na    2.26 % Na2O
   Iron        36.73 %  Fe   52.52 % Fe2O3
   Copper       2.32 %  Cu    2.91 % CuO
   Phosphorus  13.58 %  P    31.12 % P2O5
   Hydrogen     1.25 %  H    11.19 % H2O
   Oxygen      44.43 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaFe3+9Cu0.5(PO4)6(OH)11•3(H2O)
Help on Environment: Environment: Assoicated with other phosphates in novaculite deposits.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Coon Creek mine, Shady, Polk County, Arkansas, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Albert Laws Kidwell (1919-), Houston, Texas.
Help on Name Pronunciation: Name Pronunciation: Kidwellite + Pronunciation Say KIDWELLITE
 

Kidwellite Image

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

Kidwellite   Frondelite

Comments: Root beer colored crystals of frondelite and white kidwellite sticks on matrix.
Location: Sapucaia, Minas Gerais, Brazil. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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

Kidwellite

Comments: Yellowish green columnar aggregates of kidwellite crystals.
Location: Indian Mountain, Cherokee County, Alabama, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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

Kidwellite   Strengite

Comments: Spherical, crystalline aggregate of purple strengite on green kidwellite.
Location: Three Oak Gap, Polk Co., Arkansas, USA. Scale: Crystal size 2 mm.
© Tom Loomis / Dakota Matrix

Kidwellite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.8798:1:2.6958
Help on Cell Dimensions: Cell Dimensions: a = 20.117, b = 5.185, c = 13.978, Z = 2; beta = 107.07° V = 1,393.77 Den(Calc)= 3.26
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.41(1), 3.413(0.55), 3.813(0.4),
Click Here for Large Kidwellite 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 , Mineralogical Magazine , 68 (2004) p.147-165, The crystal structures of kidwellite and laubmannite , two complex fibrous, iron phosphates, Locality: Clara mine, Black Forest, Germany

 

Physical Properties of Kidwellite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Greenish yellow, Greenish white, Yellow, Light green.
Help on Density: Density: 3.04
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Columnar - Forms columns
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Silky
Help on Streak: Streak: yellow
 

Optical Properties of Kidwellite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.093 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2446,KPDmeas= 0.2623,KC= 0.2697
Ncalc = 1.82 - 1.88
Help on Optical Data: Optical Data: Biaxial (-), a=1.787, b=1.8, g=1.805, bire=0.0180
Help on Pleochroism (x): Pleochroism (x): none.
Help on Pleochroism (y): Pleochroism (y): none.
Help on Pleochroism (z): Pleochroism (z): none.
 

Calculated Properties of Kidwellite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.98 gm/cc
note: Specific Gravity of Kidwellite =3.04 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0080023991
Boson Index = 0.9919976009
Help on Photoelectric: Photoelectric: PEKidwellite = 12.63 barns/electron
U=PEKidwellite x rElectron Density= 37.61 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kidwellite is Not Radioactive
 

Kidwellite Classification

Help on  Dana Class: Dana Class: 42.08.02.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.08)where (AB)7 (XO4)4 Zq · x(H2O)
  (42.08.02)Dana Group
 
42.08.02.01 Kidwellite Na(Fe,Cu)9x(PO4)6(OH)11•3(H2O) P 2/c 2/m
Help on  Strunz Class: Strunz Class: 08.DK.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DK -With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
 
08.DK.20 Kidwellite Na(Fe,Cu)9x(PO4)6(OH)11•3(H2O) P 2/c 2/m
 

Other Kidwellite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990, AmMin 89:1833) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Kidwellite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

Search for Kidwellite using:

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

Visit our Advertisers for Kidwellite :

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

Ask about Kidwellite 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 Kidwellite Specimen Label here :

Kidwellite

Na(Fe+++,Cu)9+x(PO4)6(OH)11•3(H2O)
Dana No: 42.08.02.01 Strunz No: 08.DK.20
Locality:

 

Notes: