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

Images:

Bieberite

Comments: Pink crust of bieberite with dark blue chalcanthite.
Location: Katanga, Shaba, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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 - Prismatic H-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 4.87(1), 3.76(0.75), 4.82(0.55),

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 ï¿½ 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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Print or Cut-and-Paste your Bieberite Specimen Label here :

Bieberite

CoSO4•7(H2O)
Dana No: 29.06.10.04 Strunz No: 07.CB.35
Locality:

Notes:

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