Preisingerite Mineral Data

Preisingerite Mineral Data +

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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.

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 - PinacoidalH-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),

Crystal Structure:

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Bedlivy D , Mereiter K , American Mineralogist , 67 (1982) p.833-840, Preisingerite, Bi3O(OH)(AsO4)2, a new species from San Juan Province, Argentina:, Its description and crystal structure

Physical Properties of Preisingerite

Cleavage:

None

Color:

Gray white, Yellow gray.

Density:

7.24

Diaphaniety:

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= -0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1618,KPDmeas= 0.1605,KC= 0.157

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:

r_electron=6.11 gm/cc
note: r_{Preisingerite}=7.24 gm/cc.

Fermion Index

Fermion Index = 0.00008
Boson Index = 0.99992

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Preisingerite is Not Radioactive

Preisingerite Classification

Dana Class:

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

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

(41.10.9)Dana Group

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

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

Strunz Class:

VII/B.30-10 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.30 - Petitjeanite - Kuznetsovite series

VII/B.30-01 Smrkovecite! Bi2O(OH)(PO4) P 2₁/c 2/m

VII/B.30-02 Atelestite Bi8(AsO4)3(OH)5O5 P 2₁/a 2/m

VII/B.30-03 Hechtsbergite! Bi2O(OH)(VO4) P 2₁/c 2/m

VII/B.30-05 Petitjeanite Bi3(PO4)2O(OH) P1 1

VII/B.30-10 Preisingerite Bi3(AsO4)2O(OH) P1 1

VII/B.30-20 Schumacherite Bi3[(V,As,P)O4]2O(OH) P1 1

VII/B.30-30 Kuznetsovite! Hg3Cl(AsO4) P 2₁3 2 3

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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Preisingerite

Bi3(AsO4)2O(OH)
Dana No: 41.10.9.1 Strunz No: VII/B.30-10
Locality:

Notes: