Zn-Schulenbergite Mineral Data

General Zn-Schulenbergite Information

Chemical Formula:

(Zn,Cu)7(SO4,CO3)2(OH)10•3(H2O)

Composition:

Molecular Weight = 852.26 gm

Zinc 38.36 % Zn 47.75 % ZnO

Copper 14.91 % Cu 18.67 % CuO

Hydrogen 1.89 % H 16.91 % H₂O

Carbon 0.70 % C 2.58 % CO₂

Sulfur 5.64 % S 14.09 % SO₃

Oxygen 38.48 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn₅Cu₂(SO₄)_1.5(CO₃)_0.5(OH)₁₀•3(H₂O)

Environment:

Found in fractured shale in mine workings.

IMA Status:

Not Approved IMA (Dana # Added)

Locality:

Hirao mine, Minoo complex, 17 km north of Osaka City, Japan. Link to MinDat.org Location Data.

Name Origin:

Not named as the Zn analogue of schulenbergite.

Zn-Schulenbergite Crystallography

Axial Ratios:

a:c = 1:0.87686

Cell Dimensions:

a = 8.292, c = 7.271, Z = 1; V = 432.96 Den(Calc)= 3.27

Crystal System:

Hexagonal Space Group: Hex

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

By Intensity(I/I_o): 7.28(1)(001), 2.545(0.92)(211), 2.715(0.52)(210),3.245(0.46)(102), 1.808(0.38)(213), 3.636(0.36)(002), 2.175(0.34)(212), 1.567(0.3)(410), 1.51(0.2)(214),

Physical Properties of Zn-Schulenbergite

Cleavage:

{001} Perfect

Color:

White, Pale bluish white.

Density:

3.18

Diaphaneity:

Transparent

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Hardness:

1-2 - Between Talc and Gypsum

Luster:

Pearly

Streak:

white

Optical Properties of Zn-Schulenbergite

Gladstone-Dale:

CI meas= -0.018 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1931,KPDmeas= 0.1986,KC= 0.1951
Ncalc = 1.62 - 1.64

Optical Data:

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

Calculated Properties of Zn-Schulenbergite

Electron Density:

Bulk Density (Electron Density)=3.18 gm/cc
note: Specific Gravity of Zn-Schulenbergite =3.27 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Zn-Schulenbergite}= 25.69 barns/electron
U=PE_{Zn-Schulenbergite} x rElectron Density= 81.82 barns/cc.

Radioactivity:

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

Zn-Schulenbergite Classification

Dana Class:

31.01.06.04 (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.08.0 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.08.0 Zn-Schulenbergite! (Zn,Cu)7(SO4,CO3)2(OH)10•3(H2O) Hex Hex

Other Zn-Schulenbergite Information

References:

NAME( AmMin, v91:1690) PHYS. PROP.(AmMin, v91:1690) OPTIC PROP.(AmMin, v91:1690)

See Also:

Links to other databases for Zn-Schulenbergite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Zn-Schulenbergite

(Zn,Cu)7(SO4,CO3)2(OH)10•3(H2O)
Dana No: 31.01.06.04 Strunz No: 07.DD.08.0
Locality:

Notes:

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