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 bukovskýite with white zykaite. Location: Christbescherung Mine, Großvoigtsberg, 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: TriclinicSpace Group: P1 or P1 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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