Bieberite Mineral Data

General Bieberite Information

Chemical Formula: CoSO4•7(H2O) Composition: Molecular Weight = 281.10 gm    Cobalt    20.96 %  Co   26.66 % CoO    Hydrogen   5.02 %  H    44.86 % H₂O    Sulfur    11.41 %  S    28.48 % SO₃    Oxygen    62.61 %  O             ______        ______              100.00 %      100.00 % = TOTAL OXIDE Empirical Formula: Co(SO₄)•7(H₂O) IMA Status: Valid Species (Pre-IMA) 1845 Locality: Bieber, Hessen, Germany. Link to MinDat.org Location Data. Name Origin: Named after its original locality. Name Pronunciation: Bieberite + Pronunciation Synonym: Colbalt Vitrol   ICSD 71454   PDF 16-487  

Bieberite Image

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Bieberite Crystallography

Axial Ratios: a:b:c =2.1572:1:1.6793 Cell Dimensions: a = 14.13, b = 6.55, c = 11, Z = 4; beta = 105.083° V = 982.99 Den(Calc)= 1.90 Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c X Ray Diffraction: By Intensity(I/I_o): 4.87(1), 3.76(0.75), 4.82(0.55), Crystal Structure:

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Kellersohn T , Delaplane R G , Olovsson I , Zeitschrift fur Naturforschung , B46 (1991) p.1635-1640, Disorder of a trigonally planar coordinated water molecule in cobalt sulfate, heptahydrate, CoSO4*7D2O

 

Physical Properties of Bieberite

Cleavage: {001} Perfect Color: Pinkish red, Flesh pink. Density: 1.9 Diaphaneity: Translucent Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. Habit: Encrustations - Forms crust-like aggregates on matrix. Habit: Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite). Hardness: 2 - Gypsum Luster: Vitreous - Dull Streak: white  

Optical Properties of Bieberite

Gladstone-Dale: CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2542,KPDmeas= 0.2542,KC= 0.2507
Ncalc = 1.48 Optical Data: Biaxial (-), a=1.477, b=1.483, g=1.489, bire=0.0120, 2V(Calc)=88, 2V(Meas)=88.  

Calculated Properties of Bieberite

Electron Density: Bulk Density (Electron Density)=1.96 gm/cc
note: Specific Gravity of Bieberite =1.90 gm/cc.
Fermion Index: Fermion Index = 0.0011635864
Boson Index = 0.9988364136 Photoelectric: PE_Bieberite = 7.49 barns/electron
U=PE_Bieberite x rElectron Density= 14.67 barns/cc.
Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bieberite is Not Radioactive  

Bieberite Classification

Dana Class: 29.06.10.04 (29)Hydrated Acid and Sulfates   (29.06)where A XO4 · x(H2O)   (29.06.10)Melanterite Group (Heptahydrates, Monoclinic: P21/c)  

29.06.10.01 Melanterite FeSO4•7(H2O) P 2₁/c 2/m

 

29.06.10.02 Boothite CuSO4•7(H2O) P 2₁/c 2/m

 

29.06.10.03 Zincmelanterite (Zn,Cu,Fe)SO4•7(H2O) P 2₁/c 2/m

 

29.06.10.04 Bieberite CoSO4•7(H2O) P 2₁/c 2/m

 

29.06.10.05 Mallardite MnSO4•7(H2O) P 2₁/c 2/m

 

29.06.10.06 Alpersite! (Mg,Cu)SO4•7H2O P 2₁/c 2/m

Strunz Class: 07.CB.35 07 - SULFATES (SELENATES, TELLURATES)   07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O   07.CB -With only medium-sized cations  

07.CB.35 Bieberite CoSO4•7(H2O) P 2₁/c 2/m

 

07.CB.35 Boothite CuSO4•7(H2O) P 2₁/c 2/m

 

07.CB.35 Mallardite MnSO4•7(H2O) P 2₁/c 2/m

 

07.CB.35 Melanterite FeSO4•7(H2O) P 2₁/c 2/m

 

07.CB.35 Zincmelanterite (Zn,Cu,Fe)SO4•7(H2O) P 2₁/c 2/m

 

07.CB.35 Alpersite! (Mg,Cu)SO4•7H2O P 2₁/c 2/m

 

Other Bieberite Information

References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32) See Also: Links to other databases for Bieberite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST
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