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Dreyerite

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Big Photo

Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
© Stephan Wolfsried

Show Dreyerite Photos (7)



Formula:
Bi(VO
 
4
)
System:TetragonalColour:Orange-yellow, ...
Lustre:AdamantineHardness:2 - 3
Name:
After Gerhard Dreyer, Assistant Professor, Johannes Guterberg University, Mainz, Germany, who discovered the mineral.
Polymorph of:Clinobisvanite, Pucherite


The tetragonal polymorph of Pucherite and Clinobisvanite. The rarest of the three polymorphs of BiVO4.

Classification of Dreyerite

IMA status:Approved 1978
Strunz 8th edition ID:7/A.19-10
Nickel-Strunz 10th (pending) edition ID:8.AD.35

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
Dana 8th edition ID:38.4.8.1

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
Hey's CIM Ref.:21.3.11

21 : Vanadates (and vanadates with arsenate or phosphate)
3 : Vanadates of Al, rare earths, Pb, V or Bi
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Type Occurrence of Dreyerite

Type Locality:Hirschhorn, Katzweiler, Rhineland-Palatinate, Germany
Place of Conservation of Type Material:Smithsonian 159922

Occurrences of Dreyerite

Geological Setting:Rhyolite tuffs.

Physical Properties of Dreyerite

Lustre:Adamantine
Diaphaneity (Transparency):Translucent
Colour:Orange-yellow, brownish-yellow
Streak:Yellow
Hardness (Mohs):2 - 3
Density (calculated):6.25 g/cm3

Crystallography of Dreyerite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:I41/amd {I41/a 2/m 2/d}
Cell Parameters:a = 7.303(3) Å, c = 6.584(3) Å
Ratio:a:c = 1 : 0.902
Unit Cell Volume:V 351.15 ų (Calculated from Unit Cell)
Z:4
Morphology:Platy crystals to 0.5mm

Optical Data of Dreyerite

Type:Uniaxial (+)
Pleochroism:Visible
Comments:O= bright yellow
E= brownish yellow
Comments:Refractive indicies > 2

Chemical Properties of Dreyerite

Formula:
Bi(VO
 
4
)
Essential elements:Bi, O, V
All elements listed in formula:Bi, O, V

Relationship of Dreyerite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.AD.05Nahpoite
Na
 
2
HPO
 
4
8.AD.10Monetite
Ca(HPO
 
4
)
8.AD.10Weilite
Ca(HAsO
 
4
)
8.AD.10Švenekite
Ca(H
 
2
AsO
 
4
)
 
2
8.AD.15Archerite
(K,NH
 
4
)(H
 
2
PO
 
4
)
8.AD.15Biphosphammite
(NH
 
4
,K)(H
 
2
PO
 
4
)
8.AD.20Phosphammite
(NH
 
4
)
 
2
(HPO
 
4
)
8.AD.25Buchwaldite
NaCa(PO
 
4
)
8.AD.30Schultenite
Pb(HAsO
 
4
)
8.AD.35Chernovite-(Y)
Y(AsO
 
4
)
8.AD.35Wakefieldite-(Ce)
Ce(VO
 
4
)
8.AD.35Wakefieldite-(Y)
Y(VO
 
4
)
8.AD.35Xenotime-(Y)
Y(PO
 
4
)
8.AD.35Pretulite
Sc(PO
 
4
)
8.AD.35Xenotime-(Yb)
(Yb,Y,HREE)(PO
 
4
)
8.AD.35Wakefieldite-(La)
La(VO
 
4
)
8.AD.40Pucherite
Bi(VO
 
4
)
8.AD.45Ximengite
Bi(PO
 
4
)
8.AD.50Gasparite-(Ce)
(Ce,REE)(AsO
 
4
)
8.AD.50Monazite-(Ce)
(Ce,La,Nd,Th)(PO
 
4
)
8.AD.50Monazite-(La)
(La,Ce,Nd)(PO
 
4
)
8.AD.50Monazite-(Nd)
(Nd,La,Ce)(PO
 
4
)
8.AD.50Rooseveltite
Bi(AsO
 
4
)
8.AD.50Cheralite
(Ca,Ce)(Th,Ce)(PO
 
4
)
 
2
8.AD.50Monazite-(Sm)
(Sm,Gd,Ce,Th)(PO
 
4
)
8.AD.50UM2005-35-VO:CaFePSiTh
(Th,Ca)(VO
 
4
,SiO
 
4
,PO
 
4
)
8.AD.55Tetrarooseveltite
Bi(AsO
 
4
)
8.AD.60Chursinite
(Hg
+
2
)
 
0.5
Hg
2+
 
(AsO
 
4
)
8.AD.65Clinobisvanite
Bi(VO
 
4
)
Related Minerals - Hey's Index Grouping:

- +
21.3.1Steigerite
Al(VO
 
4
) · 3H
 
2
O
21.3.2Alvanite
(Zn,Ni)Al
 
4
(V
5+
 
O
 
3
)
 
2
(OH)
 
12
 · 2H
 
2
O
21.3.3Metaschoderite
Al
 
2
(PO
 
4
)(VO
 
4
) · 6H
 
2
O
21.3.4Schoderite
Al
 
2
(PO
 
4
)(VO
 
4
) · 8H
 
2
O
21.3.5Satpaevite
Al
 
12
V
4+
2
V
5+
6
O
 
37
 · 30H
 
2
O
21.3.6Vanalite
NaAl
 
8
V
 
10
O
 
38
 · 30H
 
2
O
21.3.7Wakefieldite-(Ce)
Ce(VO
 
4
)
21.3.7Wakefieldite-(Y)
Y(VO
 
4
)
21.3.8Chervetite
Pb
 
2
(V
 
2
O
 
7
)
21.3.9Mottramite
PbCu(VO
 
4
)(OH)
21.3.10Descloizite
Pb(Zn,Cu)(VO
 
4
)(OH)
21.3.11Clinobisvanite
Bi(VO
 
4
)
21.3.11Pucherite
Bi(VO
 
4
)
21.3.12Schumacherite
Bi
 
3
(VO
 
4
)
 
2
O(OH)
21.3.13Namibite
Cu(BiO)
 
2
(VO
 
4
)(OH)
21.3.14Pottsite
HPbBi(VO
 
4
)
 
2
 · 2H
 
2
O
21.3.15Duhamelite
(Pb,Bi,Ca)Cu(VO
 
4
)(OH,O)

Other Names for Dreyerite

Synonyms:
IMA1978-077
Other Languages:
German:Dreyerit
Russian:Дрейерит
Spanish:Dreyerita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Dreyerite

Reference List:

- +
Dreyer, G.; Tillmanns, E. (1981): Dreyerite: natural, tetragonal bismuth vanadate from Hirschhorn/Pfalz. Neues Jahrbuch für Mineralogie, Monatshefte 1981, 151-154. (in German).

American Mineralogist (1982): 67: 622 (abstract).

Hazen, R. and J.W.E. Mariathasan (1982) Bismuth vanadate: a high-pressure, high-temperature crystallographic study of the ferroelastic-paraelastic transition. Science, 216, 991–993.

Internet Links for Dreyerite

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    • Localities for Dreyerite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		U. Kolitsch, J. Gröbner, G. Blaß, H.-W. Graf und A. Pring (2005): Neufunde aus der Grube Clara im mittleren Schwarzwald (II): Dreyerit, Gasparit-(Ce), Klinobisvanit, Kobaltkoritnigit, Metatyuyamunit, Roscoelith, Sengierit, Vésigniéit und Wakefieldit. Lapis 30 (9), 35-39; 58. (in German)
    • Rhineland-Palatinate
      • Katzweiler
    		Dreyer, G.; Tillmanns, E. (1981): Dreyerite: natural, tetragonal bismuth vanadate from Hirschhorn/Pfalz. Neues Jahrbuch für Mineralogie, Monatshefte 1981, 151-154. (in German)
    • Saxony
      • Erzgebirge
        • Schneeberg District
          • Neustädtel
    		Belendorff, K. (2009): Dreyerit und Rhabdophan-(Nd) aus Schneeberg, Erzgebirge. Mineralien-Welt 20 (3), 27-29
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