Dreyerite Mineral Data (original) (raw)

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

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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 DipyramidalH-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),

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Help on Above

| | Dreyer G , Tillmanns E , Neues Jahrbuch fur Mineralogie, Monatshefte , 1981 (1981) p.151-154, Dreyerite: ein naturliches, tetragonales wismutvanadat von Hirschhorn/Pfalz, Locality: Hirschhorn, Pfalz, Germany | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

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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Ask about Dreyerite here :
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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: