Arsenobismite Mineral Data

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General Arsenobismite Information

Chemical Formula:

Bi2(AsO4)(OH)3

Composition:

Molecular Weight = 607.90 gm

Bismuth 68.75 % Bi 76.65 % Bi₂O₃

Arsenic 12.32 % As 18.90 % As₂O₅

Hydrogen 0.50 % H 4.45 % H₂O

Oxygen 18.42 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Bi₂(AsO₄)(OH)₃

Environment:

Oxidized ore at the 200 m level. An inadequately described species. Discredited as being a preisingerite-rich concentrate with atelestite and beudantite.

IMA Status:

Discredited IMA 1999

Locality:

Mammoth mine, Tintic District, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

Named in 1916 for it's composition.

Name Pronunciation:

Arsenobismite + Pronunciation

Synonym:

Discredited

IMA1998-E

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Arsenobismite Crystallography

Crystal System:

OrthorhombicSpace Group: Unk

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

By Intensity(I/I_o): 3.11(1), 6.06(0.9), 1.843(0.8),

Physical Properties of Arsenobismite

Color:

Green, Yellowish green, Brownish green.

Density:

5.7

Habit:

Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye.

Habit:

Friable - Loosley cohesive material that granulates with your fingers.

Habit:

Pulverulent - Forms a loose, poorly-coherent powdery mass.

Hardness:

3 - Calcite

Luminescence:

Non-fluorescent.

Magnetism:

Nonmagnetic

Streak:

greenish yellow

Optical Properties of Arsenobismite

Gladstone-Dale:

CI meas= 0.354 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1053,KC= 0.163
Ncalc = 1.93

Optical Data:

Isotropic, n=1.6.

Calculated Properties of Arsenobismite

Electron Density:

Bulk Density (Electron Density)=4.84 gm/cc
note: Specific Gravity of Arsenobismite =5.70 gm/cc.

Fermion Index:

Fermion Index = 0.0000898657
Boson Index = 0.9999101343

Photoelectric:

PE_{Arsenobismite}=1,312.96 barns/electron
U=PE_{Arsenobismite} x rElectron Density=6,352.45 barns/cc.

Radioactivity:

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

Arsenobismite Classification

Dana Class:

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

(41.06)where (A)2 (XO4) Zq

(41.06.09)Dana Group

41.06.09.01 Arsenobismite? Bi2(AsO4)(OH)3 Unk Ortho

Strunz Class:

08.XX.00 08 - PHOSPHATES, ARSENATES, VANADATES

08.X - Unclassified Strunz PHOSPHATES, ARSENATES, VANADATES

08.XX -Arsenate, Basic

08.XX.00 Arsenobismite? Bi2(AsO4)(OH)3 Unk Ortho

08.XX.00 Coeruleolactite (Ca,Cu)Al6(PO4)4(OH)8•4-5(H2O) P1 1

08.XX.00 Cheralite-(Ce)? (Ce,Ca,Th)(P,Si)O4 P 2₁/n 2/m

08.XX.00 Chernovite-(Ce)* (Ce,Y)(AsO4) I 4₁/amd 4/m 2/m 2/m

08.XX.00 Kerstenite? PbSeO4(?) P nma 2/m 2/m 2/m

08.XX.00 Laubmannite? Fe3Fe6(PO4)4(OH)12 Unk Ortho

08.XX.00 Spodiosite? Ca2(PO4)F Pbcm 2/m 2/m 2/m

08.XX.00 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4•5(H2O)(?) Unk Ortho

08.XX.00 Viseite Ca10Al24(SiO4)6(PO4)7O22F3•72(H2O)(?) I a3d 4/m 3 2/m

08.XX.00 Vanuranylite? (H3O,Ba,Ca,K)1.6(UO2)2V2O8•4(H2O)(?) C 2/c ? 2/m

08.XX.00 Sodium-autunite Na2(UO2)2(PO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m

08.XX.00 Sodium meta-autunite! Na2(UO2)2(PO4)2•6-8(H2O) P 4/nmm 4/m 2/m 2/m

08.XX.00 Slavkovite! Cu13(AsO4)6(AsO3OH)4•23(H2O) P1 1

08.XX.00 IMA2000-020! Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O) Ortho Ortho

08.XX.00 Lewisite! (Ca,Fe,Na)2(Sb,Ti)2O7 F d3m 4/m 3 2/m

08.XX.00 Kamarizaite! Fe3(AsO4)2(OH)3•3H2O Pccm, Pcc2, Pcmm, Pcm21 Ortho

08.XX.00 Lapeyreite! Cu3O[AsO3(OH)]2•H2O C 2/m 2/m

08.XX.00 IMA2008-063 Pb[Zn0.25,[]0.75]Fe3H(AsO4)2(OH)6 C 2/c 2/m

08.XX.00 IMA2009-002! Cu3(AsO4)2 P 2₁/c 2/m

08.XX.00 IMA2009-005 (Y,Ca,REE)5[(Si,P)O4]3F P 6₃/m 6/m 2/m 2/m

08.XX.00 IMA2009-016 Cu4H(AsO4)2(OH)3•H2O P1 1

Other Arsenobismite Information

References:

NAME( Dana8) PHYS. PROP.(Dana) OPTIC PROP.(Dana)

See Also:

Links to other databases for Arsenobismite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Arsenobismite

Bi2(AsO4)(OH)3
Dana No: 41.06.09.01 Strunz No: 08.XX.00
Locality:

Notes: