Schulenbergite Mineral Data

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.

Name Pronunciation:

Schulenbergite + Pronunciation

Synonym:

ICSD 79548

PDF 38-349

Schulenbergite Image

Images:

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:

Hexagonal Space Group: Hex

$Help on X Ray Diffraction:$ 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

Diaphaneity:

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
Ncalc = 1.65 - 1.66

Optical Data:

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

Calculated Properties of Schulenbergite

Electron Density:

Bulk Density (Electron Density)=3.19 gm/cc
note: Specific Gravity of Schulenbergite =3.28 gm/cc.

Fermion Index:

Fermion Index = 0.007025429
Boson Index = 0.992974571

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Schulenbergite is Not Radioactive

Schulenbergite Classification

Dana Class:

31.01.06.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.01)where (A+ B++)m (XO4)p Zqï¿½x(H2O), where m:p>6:1

(31.01.06)Schulenbergite group

31.01.06.01 Schulenbergite (Cu,Zn)7(SO4,CO3)2(OH)10•3(H2O) Hex Hex

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

31.01.06.03 Osakaite! Zn4SO4(OH)6•5H2O P1 1

31.01.06.04 Zn-Schulenbergite! (Zn,Cu)7(SO4,CO3)2(OH)10•3(H2O) Hex Hex

Strunz Class:

07.DD.80 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DD -With only medium-sized cations; sheets of edge-sharing octahedra

07.DD.80 Guarinoite (Zn,Co,Ni)6(SO4)(OH,Cl)10•5(H2O) P 6₃/m,P 6₃, or P 6₃22 Hex

07.DD.80 Schulenbergite (Cu,Zn)7(SO4,CO3)2(OH)10•3(H2O) Hex Hex

07.DD.80 Theresemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10•8(H2O) P 6₃ 6

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 - 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

Search for Schulenbergite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Schulenbergite :

Ask about Schulenbergite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Schulenbergite Specimen Label here :

Schulenbergite

(Cu,Zn)7(SO4,CO3)2(OH)10•3(H2O)
Dana No: 31.01.06.01 Strunz No: 07.DD.80
Locality:

Notes:

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.