Liskeardite Mineral Data

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


Dakota Matrix
[Newest Minerals] [Rare Minerals] [Cabinet Specimens] [About Us] [Image Gallery]
Dakota Matrix Minerals
Updated weekly, for the collector, educator, and researcher since 1996
Extensive Inventory of very Rare Minerals. Visa and Mastercard are Welcome


General Liskeardite Information

Help on Chemical Formula: Chemical Formula: (Al,Fe+++)3(AsO4)(OH)6•5(H2O)
Help on Composition: Composition: Molecular Weight = 440.85 gm
   Aluminum  12.24 %  Al   23.13 % Al2O3
   Iron      12.67 %  Fe   18.11 % Fe2O3
   Arsenic   16.99 %  As   26.07 % As2O5
   Hydrogen   3.66 %  H    32.69 % H2O
   Oxygen    54.44 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al2Fe3+(AsO4)(OH)6•5(H2O)
Help on Environment: Environment: Secondary mineral.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1878
Help on Locality: Locality: Liskeard, Cornwall, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Liskeardite + Pronunciation Say LISKEARDITE
 

Liskeardite Image

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

Liskeardite

Comments: Botryoidal liskeardite crusts.
Location: Saint Hillary, Cornwall, England. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Liskeardite Crystallography
Help on Crystal System: Crystal System: OrthorhombicSpace Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.33(1), 17.6(1), 8.65(0.8),
 

Physical Properties of Liskeardite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Bluish, Bluish white, Brownish white, Greenish, Greenish white.
Help on Density: Density: 3.1
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Streak: Streak: white
 

Optical Properties of Liskeardite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.157 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2177,KC= 0.2583
Ncalc = 1.8
Help on Optical Data: Optical Data: Biaxial (+), a=1.661, b=1.675, g=1.689, bire=0.0280, 2V(Calc)=88, 2V(Meas)=90.
 

Calculated Properties of Liskeardite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Liskeardite =3.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0029524146
Boson Index = 0.9970475854
Help on Photoelectric: Photoelectric: PELiskeardite = 15.13 barns/electron
U=PELiskeardite x rElectron Density= 47.01 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Liskeardite is Not Radioactive
 

Liskeardite Classification
Help on Dana Class: Dana Class: 42.01.01.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.01)where (A)3 (XO4) Zq · x(H2O)
  (42.01.01)Dana Group
 
42.01.01.01 Liskeardite (Al,Fe)3(AsO4)(OH)6•5(H2O) Unk Ortho
Help on Strunz Class: Strunz Class: 08.DF.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DF -With only medium-sized cations, (OH,etc.):RO4 > 3:1
 
08.DF.10 Bolivarite Al2(PO4)(OH)3•4-5(H2O) None
 
08.DF.10 Evansite Al3(PO4)(OH)6•6(H2O)(?) None
 
08.DF.10 Liskeardite (Al,Fe)3(AsO4)(OH)6•5(H2O) Unk Ortho
 
08.DF.10 Rosieresite (Pb,Cu,Al)(PO4)x•n(H2O) None
 

Other Liskeardite Information
Help on References: References: NAME( Dana8) 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 Liskeardite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Liskeardite using:

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

Visit our Advertisers for Liskeardite :

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 Liskeardite Mineral Data :

Ask about Liskeardite 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 Liskeardite Specimen Label here :

Liskeardite

(Al,Fe+++)3(AsO4)(OH)6•5(H2O)
Dana No: 42.01.01.01 Strunz No: 08.DF.10
Locality:

 

Notes: