Preisingerite Mineral Data

General Preisingerite Information

Chemical Formula:

Bi3(AsO4)2O(OH)

Composition:

Molecular Weight = 937.79 gm

Bismuth 66.85 % Bi 74.53 % Bi₂O₃

Arsenic 15.98 % As 24.51 % As₂O₅

Hydrogen 0.11 % H 0.96 % H₂O

Oxygen 17.06 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Bi₃(AsO₄)₂O(OH)

IMA Status:

Approved IMA 1981

Locality:

Cerro Negro de la Aguadita, Caliugasta, and San Francisco de los Andes, San Juan, Argentina Link to MinDat.org Location Data.

Name Origin:

Named for Anton Preisinger (1925-), Mineralogist, University of Technology, Vienna.

Name Pronunciation:

Preisingerite + Pronunciation

Synonym:

ICSD 31179

PDF 35-543

Preisingerite Image

Images:

Preisingerite

Comments: Olive-greenish crystals of preisingerite on quartz.
Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Preisingerite Crystallography

Axial Ratios:

a:b:c =1.3496:1:0.9369

Cell Dimensions:

a = 9.993, b = 7.404, c = 6.937, Z = 2; alpha = 87.82°, beta = 115.01°, gamma = 111.07° V = 433.72 Den(Calc)= 7.18

Crystal System:

Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.28(1), 3.263(0.97), 3.194(0.87),

Physical Properties of Preisingerite

Cleavage:

None

Color:

Gray white, Yellow gray.

Density:

7.24

Diaphaneity:

Translucent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

3-4 - Calcite-Fluorite

Luster:

Subadamantine

Streak:

white

Optical Properties of Preisingerite

Gladstone-Dale:

CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1605,KPDmeas= 0.1605,KC= 0.157
Ncalc = 2.14

Optical Data:

Biaxial (?), a=2.13, b=2.16, g=2.195, bire=0.0650, 2V(Calc)=88, 2V(Meas)=90.

Calculated Properties of Preisingerite

Electron Density:

Bulk Density (Electron Density)=6.11 gm/cc
note: Specific Gravity of Preisingerite =7.24 gm/cc.

Fermion Index:

Fermion Index = 0.0000827217
Boson Index = 0.9999172783

Photoelectric:

PE_{Preisingerite}=1,286.16 barns/electron
U=PE_{Preisingerite} x rElectron Density=7,864.22 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Preisingerite is Not Radioactive

Preisingerite Classification

Dana Class:

41.10.09.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.10)where (A++ B++)3 (XO4)2 Zq

(41.10.09)Preisingerite Group

41.10.09.01 Preisingerite Bi3(AsO4)2O(OH) P1 1

41.10.09.02 Schumacherite Bi3[(V,As,P)O4]2O(OH) P1 1

Strunz Class:

08.BO.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BO -With only large cations, (OH, etc.):RO4 � 1:1

08.BO.10 Preisingerite Bi3(AsO4)2O(OH) P1 1

08.BO.10 Petitjeanite Bi3(PO4)2O(OH) P1 1

08.BO.10 Schumacherite Bi3[(V,As,P)O4]2O(OH) P1 1

Other Preisingerite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Preisingerite :
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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Preisingerite

Bi3(AsO4)2O(OH)
Dana No: 41.10.09.01 Strunz No: 08.BO.10
Locality:

Notes:

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