Parabutlerite Mineral Data + Say PARABUTLERITE

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General Parabutlerite Information

Help on Chemical  Formula: Chemical Formula: Fe+++(SO4)(OH)·2(H2O)
Help on Composition: Composition: Molecular Weight = 204.95 gm
   Iron      27.25 %  Fe   38.96 % Fe2O3
   Hydrogen   2.46 %  H    21.98 % H2O
   Sulfur    15.65 %  S    39.07 % SO3
   Oxygen    54.65 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+(SO4)(OH)·2(H2O)
Help on Environment: Environment: Alteration product of copapite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1938
Help on Locality: Locality: Alcaparrosa, near Cirritos Bayos, Antofagasta, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek para, and it's dimorph, bulterite,
Help on Synonym: Synonym: ICSD 23506
  PDF 16-939
 

Parabutlerite Image

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Parabutlerite

Comments: Yellow to brownish yellow parabutlerite crystals.
Location: Shagand Yazd, Iran. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Parabutlerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3666:1:0.3586
Help on Cell Dimensions: Cell Dimensions: a = 7.38, b = 20.13, c = 7.22, Z = 8; V = 1,072.60 Den(Calc)= 2.54
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmnb
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.11(1), 4.99(1), 5.85(0.6),
Help on Forms: Forms:

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Forms: [ 0 1 2] [ 1 1 1] [ 1 1 0] [ 0 1 1]

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Physical Properties of Parabutlerite

Help on Cleavage: Cleavage: [110] Indistinct
Help on Color: Color: Light brown orange, Light orange, Orange brown.
Help on Density: Density: 2.55
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light yellow
 

Optical Properties of Parabutlerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2623,KPDmeas= 0.2612,KC= 0.2666
Help on Optical Data: Optical Data: Biaxial (+), a=1.589-1.598, b=1.66-1.663, g=1.737-1.75, bire=0.1480-0.1520, 2V(Calc)=86-88, 2V(Meas)=87. Dispersion r > v moderate.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): faint yellow.
Help on Pleochroism (z): Pleochroism (z): light yellow.
 

Calculated Properties of Parabutlerite

Help on Electron Density: Electron Density:

relectron=2.55 gm/cc
note: rParabutlerite =2.54 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00721
Boson Index = 0.99279
Help on Photoelectric: Photoelectric:

PEParabutlerite = 8.92 barns/electron
U=PEParabutlerite x relectron= 22.76 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Parabutlerite is Not Radioactive

 

Parabutlerite Classification

Help on  Dana Class: Dana Class: 31.9.2.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.9)where (A+ B++) (XO4) Zq·x(H2O)
  (31.9.2)Dana Group
 
31.9.2.1 Parabutlerite Fe(SO4)(OH)·2(H2O) Pmnb 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: VI/D.01-30 VI - Sulfates,Chromates,Molybdates and Tungstates
  VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size
  VI/D.01 - Metahohmannite - Xitieshanite series
 
VI/D.01-10 Metahohmannite Fe2[O(SO4)2]·4(H2O) P1 1
 
VI/D.01-20 Butlerite Fe(SO4)(OH)·2(H2O) P 21/m 2/m
 
VI/D.01-30 Parabutlerite Fe(SO4)(OH)·2(H2O) Pmnb 2/m 2/m 2/m
 
VI/D.01-40 Amarantite Fe(SO4)(OH)·3(H2O) P1 1
 
VI/D.01-50 Hohmannite Fe2(SO4)2(OH)2·7(H2O) P1 1
 
VI/D.01-60 Fibroferrite Fe(SO4)(OH)·5(H2O) R 3 3
 
VI/D.01-70 Xitieshanite Fe(SO4)(OH)·7(H2O) P 21/a 2/m
 

Other Parabutlerite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Parabutlerite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - CalTech Mineral Spectroscopy 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Parabutlerite

Fe+++(SO4)(OH)·2(H2O)
Dana No: 31.9.2.1 Strunz No: VI/D.01-30
Locality:

 

Notes:

 

 
   
 
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