Schulenbergite Mineral Data

Schulenbergite Mineral Data +

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General Schulenbergite Information

Chemical Formula:

(Cu,Zn)7(SO4,CO3)2(OH)10·3(H2O)

Composition:

Molecular Weight = 846.73 gm

Zinc 15.45 % Zn 19.22 % ZnO

Copper 37.52 % Cu 46.97 % CuO

Hydrogen 1.90 % H 17.02 % H₂O

Carbon 0.71 % C 2.60 % CO₂

Sulfur 5.68 % S 14.18 % SO₃

Oxygen 38.74 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₅Zn₂(SO₄)_1.5(CO₃)_0.5(OH)₁₀·3(H₂O)

Environment:

Found in the mine dumps.

IMA Status:

Approved IMA 1984

Locality:

Glucksrad mine, near Oberschulenberg (Upper Schulenberg), Harz, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 79548

PDF 38-349

Schulenbergite Image

Images:

Click Here for Larger Schulenbergite Image

Schulenbergite Linarite

Comments: Light greenish rosettes of schulenbergite with small green crystals of ramsbeckite and blue crystals of linarite.
Location: Gelbe Birke Mine, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Schulenbergite Crystallography

Axial Ratios:

a:c = 1:0.87077

Cell Dimensions:

a = 8.249, c = 7.183, Z = 1; V = 423.29 Den(Calc)= 3.32

Crystal System:

TrigonalSpace Group: P 3 or P 3-

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

By Intensity(I/I_o): 7.186(1), 2.527(0.8), 2.7(0.8),

Physical Properties of Schulenbergite

Cleavage:

[???] Perfect

Color:

Green blue, Light green blue.

Density:

3.28

Diaphaniety:

Transparent

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Silky

Streak:

pale blue blue

Optical Properties of Schulenbergite

Dichroism (e):

colorless.

Dichroism (w):

very pale bluish white.

Gladstone-Dale:

CI meas= 0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.043 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1902,KPDmeas= 0.1925,KC= 0.1987

Optical Data:

Uniaxial (-), e=1.623, w=1.64, bire=0.0170.

Calculated Properties of Schulenbergite

Electron Density:

r_electron=3.19 gm/cc
note: r_{Schulenbergite}=3.28 gm/cc.

Fermion Index

Fermion Index = 0.00702
Boson Index = 0.99298

Photoelectric:

PE_{Schulenbergite}= 24.24 barns/electron
U=PE_{Schulenbergite} x r_electron= 77.38 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Schulenbergite is Not Radioactive

Schulenbergite Classification

Dana Class:

31.1.6.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.1)where (A+ B++)m (XO4)p Zq·x(H2O), where m:p>6:1

(31.1.6)Dana Group

31.1.6.1 Schulenbergite (Cu,Zn)7(SO4,CO3)2(OH)10·3(H2O) P 3 or P 3- Trig

31.1.6.2 Bechererite! (Zn,Cu)6Zn2(OH)13[(S,Si)(O,OH)4]2 P 3 3

Strunz Class:

VI/D.03-60 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.03 - Langite series, Posnjakite - Nakuriite

VI/D.03-10 Posnjakite Cu4(SO4)(OH)6·(H2O) C 2/c 2/m

VI/D.03-20 Langite Cu4(SO4)(OH)6·2(H2O) Pc m

VI/D.03-30 Wroewolfeite Cu4(SO4)(OH)6·2(H2O) Pc m

VI/D.03-40 Namuwite (Zn,Cu)4(SO4)(OH)6·4(H2O) Unk Hex

VI/D.03-50 Guarinoite (Zn,Co,Ni)6(SO4)(OH,Cl)10·5(H2O) P 6₃/m,P 6₃, or P 6₃22 Hex

VI/D.03-55 Theresemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10·8(H2O) P 6₃ 6

VI/D.03-60 Schulenbergite (Cu,Zn)7(SO4,CO3)2(OH)10·3(H2O) P 3 or P 3- Trig

VI/D.03-65 Christelite! Zn3Cu2(SO4)2(OH)6·4(H2O) P1 1

VI/D.03-70 Ktenasite (Cu,Zn)5(SO4)2(OH)6·6(H2O) P 2₁/c 2/m

VI/D.03-75 Ramsbeckite (Cu,Zn)15(SO4)4(OH)22·6(H2O) P 2₁/a 2/m

VI/D.03-80 Campigliaite Cu4Mn(SO4)2(OH)6·4(H2O) C 2 2

VI/D.03-90 Nakauriite (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6·48(H2O) Unk Ortho

Other Schulenbergite Information

References:

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

See Also:

Links to other databases for Schulenbergite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 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 -École des Mines de Paris

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Schulenbergite

(Cu,Zn)7(SO4,CO3)2(OH)10·3(H2O)
Dana No: 31.1.6.1 Strunz No: VI/D.03-60
Locality:

Notes: