Mineralogy Database

Dreyerite Mineral Data

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General Dreyerite Information

Help on Chemical  Formula: Chemical Formula: BiVO4
Help on Composition: Composition: Molecular Weight = 323.92 gm
   Vanadium  15.73 %  V    28.07 % V2O5
   Bismuth   64.52 %  Bi   71.93 % Bi2O3
   Oxygen    19.76 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Bi(VO4)
Help on Environment: Environment: Rhyolitic tuffs, intercalated with carbonaceous matter and silicified wood.
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Hirschhorn, near Kaiserlautern, Rhineland-Palatinate, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Gerhard Dreyer, Assistant Professor, Johannes Gutenberg University, Mainz, Germany, who found the mineral.
Help on Name Pronunciation: Name Pronunciation: Dreyerite + Pronunciation Say DREYERITE
Help on Synonym: Synonym: ICSD 100733
  PDF 14-133
 

Dreyerite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.88429
Help on Cell Dimensions: Cell Dimensions: a = 7.303, c = 6.458, Z = 4; V = 344.43 Den(Calc)= 6.25
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.656(1), 2.739(0.6), 4.85(0.4),
 

Physical Properties of Dreyerite

Help on Color: Color: Brownish yellow, Orange.
Help on Density: Density: 6.25
Help on Diaphaneity: Diaphaneity: Semitransparent
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: yellow
 

Optical Properties of Dreyerite

Help on Dichroism (e): Dichroism (e): bright yellow.
Help on Dichroism (w): Dichroism (w): brownish yellow.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.221 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.221 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.16,KPDmeas= 0.16,KC= 0.2055
Ncalc = 2.28
Help on Optical Data: Optical Data: Uniaxial (+), w=2, e=2, bire=0.0000.
 

Calculated Properties of Dreyerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.33 gm/cc
note: Specific Gravity of Dreyerite =6.25 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0004886448
Boson Index = 0.9995113552
Help on Photoelectric: Photoelectric: PEDreyerite =1,221.91 barns/electron
U=PEDreyerite x rElectron Density=6,507.18 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dreyerite is Not Radioactive
 

Dreyerite Classification

Help on  Dana Class: Dana Class: 38.04.08.01 (38)Anhydrous Phosphates, etc
  (38.04)A+ XO4
  (38.04.08)Dana Group
 
38.04.08.01 Dreyerite BiVO4 I 41/amd 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.AD.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AD -With only large cations
 
08.AD.35 Dreyerite BiVO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Chernovite-(Y) YAsO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Pretulite! ScPO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Xenotime-(Y) YPO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Wakefieldite-(Ce) (Ce,Pb,Pb)VO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Wakefieldite-(Y) YVO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Xenotime-(Yb)! YbPO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Wakefieldite-(La)! LaVO4 I 41/amd 4mm
 
08.AD.35 Wakefieldite-(Nd)! NdVO4 I 41/amd 4mm
 

Other Dreyerite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic5)
Help on See Also: See Also: Links to other databases for Dreyerite :
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
15 - WWW-MINCRYST

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

Dreyerite

BiVO4
Dana No: 38.04.08.01 Strunz No: 08.AD.35
Locality:

 

Notes:

 

 
   
 


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