Mineralogy Database

Benauite Mineral Data

Search Webmineral :
  
Advertisment

General Benauite Information

Help on Chemical  Formula: Chemical Formula: HSrFe+++3(PO4)2(OH)6
Help on Composition: Composition: Molecular Weight = 603.13 gm
   Barium       4.55 %  Ba    5.08 % BaO
   Strontium   10.17 %  Sr   12.03 % SrO
   Iron        26.85 %  Fe   38.39 % Fe2O3
   Phosphorus   7.70 %  P    17.65 % P2O5
   Hydrogen     1.39 %  H    12.40 % H2O
   Lead         3.44 %  Pb    3.70 % PbO
   Sulfur       2.66 %  S     6.64 % SO3
   Oxygen      43.24 %  O
              ______        ______ 
              100.00 %       95.89 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sr0.7Ba0.2Pb0.1Fe3+2.9(PO4)1.5(SO4)0.5(OH)8.3
Help on Environment: Environment: Occurs as a secondary mineral in the oxidized zone of a hydrothermal polymetallic barite-fluorite deposit.
Help on IMA Status: IMA Status: Approved IMA 1995 (Dana # Added)
Help on Locality: Locality: From the Clara mine, near Oberwolfach, Black Forest, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the Benauer Berg, Germany, near which the Clara mine is situated.
Help on Name Pronunciation: Name Pronunciation: Benauite Say BENAUITE
Help on Synonym: Synonym: IMA1995-001
  Lusungite
 

Benauite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.31456
Help on Cell Dimensions: Cell Dimensions: a = 7.28, c = 16.85, Z = 3; V = 773.38 Den(Calc)= 3.88
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.88(1)(101), 3.06(0.9)(113), 2.25(0.6)(107),3.65(0.6), 1.82(0.5)(118,220,216), 1.969(0.5)(303), 2.53(0.5)(204), 2.81(0.5)(006), 2.96(0.5)(105,202),
 

Physical Properties of Benauite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Yellow, Brown.
Help on Density: Density: 3.65
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous - Resinous
Help on Streak: Streak: pale yellow
 

Optical Properties of Benauite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.053 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2235,KPDmeas= 0.2375,KC= 0.236
Ncalc = 1.86 - 1.92
Help on Optical Data: Optical Data: Uniaxial (-), e=1.862, w=1.872, bire=0.0100.
 

Calculated Properties of Benauite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.52 gm/cc
note: Specific Gravity of Benauite =3.65 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEBenauite = 93.53 barns/electron
U=PEBenauite x rElectron Density= 328.98 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Benauite is Not Radioactive
 

Benauite Classification

Help on  Dana Class: Dana Class: 42.07.03.07 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.03)Crandallite Group
 
42.07.03.01 Crandallite CaAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
42.07.03.02 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 R 3m 3 2/m
 
42.07.03.03 Goyazite SrAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
42.07.03.04 Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5•(H2O) R 3m 3m
 
42.07.03.05 Plumbogummite PbAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
42.07.03.06 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m
 
42.07.03.07 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m
 
42.07.03.08 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 08.BL.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BL -With medium-sized and large cations, (OH, etc.):RO4 = 3:1
 
08.BL.10 Arsenogorceixite! BaAl3AsO3(OH)(AsO4,PO4)(OH,F)6 R 3m 3 2/m
 
08.BL.10 Arsenocrandallite (Ca,Sr)Al3[(As,P)O4]2(OH)5•(H2O) R 3m 3m
 
08.BL.10 Ferrazite? (Pb,Ba)3(PO4)2•8(H2O)(?) Tri
 
08.BL.10 Arsenowaylandite* BiAl3(AsO4)2(OH)6 R 3m 3 2/m
 
08.BL.10 Benauite! HSrFe3(PO4)2(OH)6 R 3m 3 2/m
 
08.BL.10 Arsenogoyazite (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5•(H2O) R 3m 3 2/m
 
08.BL.10 Dussertite BaFe3(AsO4)2(OH)5 R 3m 3m
 
08.BL.10 Crandallite CaAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
08.BL.10 Goyazite SrAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
08.BL.10 Gorceixite BaAl3(PO4)(PO3OH)(OH)6 R 3m 3 2/m
 
08.BL.10 Kintoreite PbFe3(PO4)2(OH,H2O)6 R 3m 3 2/m
 
08.BL.10 Lusungite? (Sr,Pb)Fe3(PO4)2(OH)5•(H2O) R 3m 3m
 
08.BL.10 Philipsbornite PbAl3(AsO4)2(OH)5•(H2O) R 3m-,R 3m Trig
 
08.BL.10 Plumbogummite PbAl3(PO4)2(OH)5•(H2O) R 3m 3 2/m
 
08.BL.10 Segnitite PbFe3H(AsO4)2(OH)6 R 3m 3 2/m
 
08.BL.10 Springcreekite! BaV3(PO4)2(OH,H2O)6 R 3m 3 2/m
 

Other Benauite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Eur. J. Min.,Vol.8,1996) OPTIC PROP.(Eur. J. Min.,Vol.8,1996)
Help on See Also: See Also: Links to other databases for Benauite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Benauite using:

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

Visit our Advertisers for Benauite :

Ask about Benauite 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 Español

Print or Cut-and-Paste your Benauite Specimen Label here :

Benauite

HSrFe+++3(PO4)2(OH)6
Dana No: 42.07.03.07 Strunz No: 08.BL.10
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.