Delvauxite Mineral Data

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

Advertisment
Exceptional Minerals features excellent, high quality mineral specimens for sale. We also have a weekly Best Offer Mineral Auction.
 For more than thirty (30) years, Excalibur Mineral Corp. has been providing private collectors, researchers, major universities and museums throughout the world with reliably identified, rare and unusual mineral samples for science an
 A Bijoux.com is an online store specialized in the sale on the internet of precious stones , gems , minerals and jewels for individuals and professionals
 Adamsminerals.com- Online mineral store front for mineral collectors

General Delvauxite Information

Help on Chemical Formula: Chemical Formula: CaFe+++4(PO4,SO4)2(OH)8•4-6(H2O) (?)
Help on Composition: Composition: Molecular Weight = 863.66 gm
   Calcium      3.48 %  Ca    4.87 % CaO
   Magnesium    0.70 %  Mg    1.17 % MgO
   Aluminum     0.62 %  Al    1.18 % Al2O3
   Iron        25.22 %  Fe   36.06 % Fe2O3
   Phosphorus  10.04 %  P    23.01 % P2O5
   Hydrogen     2.03 %  H    18.15 % H2O
   Carbon       0.28 %  C     1.02 % CO2
   Sulfur       4.08 %  S    10.20 % SO3
   Oxygen      53.54 %  O
              ______        ______ 
              100.00 %       95.65 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.75Mg0.25Fe3+3.9Al0.2(PO4)2.8(SO4)1.1(CO3)0.2(OH)8·4.7(H2O)
Help on Environment: Environment: In a gossan.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1838
Help on Locality: Locality: Berneau, near Vise, Ličge, Belgium. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after J.S.P.J. Delvaux de Feuffe (1782-1863), Belgian chemist who first described and analyzed the mineral.
Help on Name Pronunciation: Name Pronunciation: Delvauxite + Pronunciation Say DELVAUXITE
Help on Synonym: Synonym: Borickite - 42.6.6.2
 

Delvauxite Image

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

Delvauxite

Comments: Pure botryoidal massive delvauxite.
Location: Kutna Hora, Stredocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Delvauxite Crystallography
Help on Crystal System: Crystal System: Amorphous- No Crystals
 

Physical Properties of Delvauxite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellowish brown, Brown, Reddish brown, Brownish black.
Help on Density: Density: 1.8 - 2, Average = 1.9
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Amorphous - No crystalline form or imitative shape.
Help on Habit: Habit: Concretionary - Rounded massive fine-grained materials.
Help on Habit: Habit: Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: yellow
 

Optical Properties of Delvauxite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.5 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.3789,KC= 0.2526
Ncalc = 1.45 - 1.51
Help on Optical Data: Optical Data: Isotropic, n=1.72.
 

Calculated Properties of Delvauxite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.90 gm/cc
note: Specific Gravity of Delvauxite =1.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0066938383
Boson Index = 0.9933061617
Help on Photoelectric: Photoelectric: PEDelvauxite = 8.62 barns/electron
U=PEDelvauxite x rElectron Density= 16.36 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Delvauxite is Not Radioactive
 

Delvauxite Classification
Help on Dana Class: Dana Class: 42.06.06.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.06)where (AB)2 (XO4) Zq · x(H2O)
  (42.06.06)Dana Group
 
42.06.06.01 Delvauxite CaFe4(PO4,SO4)2(OH)8•4-6(H2O)(?) None
Help on Strunz Class: Strunz Class: 08.DM.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DM -With large and medium-sized cations, (OH, etc.):RO4 > 2:1
 
08.DM.35 Delvauxite CaFe4(PO4,SO4)2(OH)8•4-6(H2O)(?) None
 

Other Delvauxite Information
Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Duda&Rejl90) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Delvauxite :
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

Search for Delvauxite using:

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

Visit our Advertisers for Delvauxite :

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

Ask about Delvauxite 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 Delvauxite Specimen Label here :

Delvauxite

CaFe+++4(PO4,SO4)2(OH)8•4-6(H2O) (?)
Dana No: 42.06.06.01 Strunz No: 08.DM.35
Locality:

 

Notes: