Bukovskyite Mineral Data

General Bukovskyite Information

Chemical Formula:

Fe+++2(AsO4)(SO4)(OH)•7(H2O)

Composition:

Molecular Weight = 489.79 gm

Iron 22.80 % Fe 29.34 % FeO

Arsenic 15.30 % As 23.46 % As₂O₅

Hydrogen 3.09 % H 27.59 % H₂O

Sulfur 6.55 % S 16.35 % SO₃

Oxygen 52.27 % O

______ ______

100.00 % 96.73 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺₂(AsO₄)(SO₄)(OH)•7(H₂O)

Environment:

An alteration product of arsenopyrite.

IMA Status:

Approved IMA 1967

Locality:

Kank, near Kutna Hora, Czech Republic. Link to MinDat.org Location Data.

Name Origin:

Named after the Czech chemist, Antonin Bukovsky (1865-1950).

Name Pronunciation:

Bukovskyite + Pronunciation

Bukovskyite Image

Images:

Bukovskyite Zykaite

Comments: Pale beige acicular crystals of bukovskÃ½ite with white zykaite.
Location: Christbescherung Mine, GroÃŸvoigtsberg, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Bukovskyite Crystallography

Axial Ratios:

a:b:c =0.7615:1:0.7304

Cell Dimensions:

a = 10.722, b = 14.079, c = 10.284, Z = 4; alpha = 93.5°, beta = 115.96°, gamma = 90.27° V = 1,393.16 Den(Calc)= 2.34

Crystal System:

Triclinic Space Group: P1 or P1

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

By Intensity(I/I_o): 9.2(1), 9.6(1), 3.9(0.7),

Physical Properties of Bukovskyite

Cleavage:

None

Color:

Light yellow, Orange, Greenish gray.

Density:

2.34

Fracture:

Earthy - Dull, clay-like fractures with no visible crystalline affinities, (e.g. howlite).

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Fibrous - Crystals made up of fibers.

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Hardness:

5 - Apatite

Luster:

Vitreous - Dull

Streak:

yellowish white

Optical Properties of Bukovskyite

Gladstone-Dale:

CI meas= -0.192 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.192 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2574,KPDmeas= 0.2574,KC= 0.2159
Ncalc = 1.51

Optical Data:

Biaxial (+), b=1.57-1.582, g=1.626-1.631,

Calculated Properties of Bukovskyite

Electron Density:

Bulk Density (Electron Density)=2.33 gm/cc
note: Specific Gravity of Bukovskyite =2.34 gm/cc.

Fermion Index:

Fermion Index = 0.005581055
Boson Index = 0.994418945

Photoelectric:

PE_Bukovskyite= 17.10 barns/electron
U=PE_Bukovskyite x rElectron Density= 39.88 barns/cc.

Radioactivity:

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

Bukovskyite Classification

Dana Class:

43.05.01.02 (43)Compound Phosphates, etc.

(43.05)(Hydrated Compound Anions With Hydroxyl or Halogen)

(43.05.01)Sarmientite Group

43.05.01.01 Sarmientite Fe2(AsO4)(SO4)(OH)•5(H2O) P 2₁/c 2/m

43.05.01.02 Bukovskyite Fe2(AsO4)(SO4)(OH)•7(H2O) P1 or P1 Tri

43.05.01.03 Sanjuanite Al2(PO4)(SO4)(OH)•9(H2O) P1 or P1 Tri

Strunz Class:

08.DB.40 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DB -With only medium-sized cations, (OH, etc.):RO4 < 1:1

08.DB.40 Bukovskyite Fe2(AsO4)(SO4)(OH)•7(H2O) P1 or P1 Tri

Other Bukovskyite Information

References:

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

See Also:

Links to other databases for Bukovskyite :
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

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

Bukovskyite

Fe+++2(AsO4)(SO4)(OH)•7(H2O)
Dana No: 43.05.01.02 Strunz No: 08.DB.40
Locality:

Notes:

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