Zincaluminite Mineral Data

General Zincaluminite Information

Chemical Formula:

Zn6Al6(SO4)2(OH)26•5(H2O)

Composition:

Molecular Weight = 1,278.62 gm

Aluminum 12.66 % Al 23.92 % Al₂O₃

Zinc 30.68 % Zn 38.19 % ZnO

Hydrogen 2.84 % H 25.36 % H₂O

Sulfur 5.02 % S 12.52 % SO₃

Oxygen 48.80 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn₆Al₆(SO₄)₂(OH)₂₆•5(H₂O)

Environment:

Questionable species. Ancient lead slags.

IMA Status:

Valid Species (Pre-IMA) 1881

Locality:

Laurium, Greece. Link to MinDat.org Location Data.

Name Origin:

Named for the composition.

Name Pronunciation:

Zincaluminite + Pronunciation

Zincaluminite Image

Images:

Zincaluminite

Comments: Bright white to pastel blue botryoidal zincaluminite with cuprian-adamite.
Location: Kamariza Mine, Laurium, Attiki, Greece. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Zincaluminite Crystallography

Crystal System:

Hexagonal Space Group: Unk

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

By Intensity(I/I_o): 4.83(1), 11.1(0.5), 7.07(0.4),2.4(0.3), 2.45(0.3), 4.35(0.3), 2.71(0.2), 3.55(0.2),

Physical Properties of Zincaluminite

Color:

Bluish white, White, Light blue.

Density:

2.26

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

2.5-3 - Finger Nail-Calcite

Streak:

white

Optical Properties of Zincaluminite

Gladstone-Dale:

CI meas= -0.062 (Fair) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2319,KC= 0.2183
Ncalc = 1.49

Optical Data:

Uniaxial (-), e=1.514, w=1.534, bire=0.0200.

Calculated Properties of Zincaluminite

Electron Density:

Bulk Density (Electron Density)=2.26 gm/cc
note: Specific Gravity of Zincaluminite =2.26 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Zincaluminite}= 15.46 barns/electron
U=PE_{Zincaluminite} x rElectron Density= 34.86 barns/cc.

Radioactivity:

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

Zincaluminite Classification

Dana Class:

31.02.03.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.02)where (A+ B++)6 (XO4) Zq�x(H2O)

(31.02.03)Dana Group

31.02.03.01 Zincaluminite Zn6Al6(SO4)2(OH)26•5(H2O) Unk Hex

Strunz Class:

07.DD.35 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.35 Carrboydite (Ni,Cu)14Al9(SO4,CO3)6(OH)43•7(H2O) Unk Hex

07.DD.35 Glaucocerinite (Zn,Cu)5Al3(SO4)1.5(OH)16•9(H2O) Unk (HEX-R) Trig

07.DD.35 Honessite Ni6Fe2(SO4)(OH)16•4(H2O) R 3m 3 2/m

07.DD.35 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2•n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m

07.DD.35 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3

07.DD.35 Hydrohonessite Ni6Fe2(SO4)(OH)16•7(H2O) Unk Hex

07.DD.35 Motukoreaite Na2Mg38Al24(CO3)13(SO4)8(OH)108•56(H2O) R 3m 3 2/m

07.DD.35 Mountkeithite (Mg,Ni)11(Fe,Cr)3(SO4,CO3)3.5(OH)24•11(H2O) Unk Hex

07.DD.35 Shigaite Mn7Al4(SO4)2(OH)22•8(H2O) R 3 3

07.DD.35 Natroglaucocerinite! (Na,Zn,Cu)10Al6(SO4)3(OH)32•18(H2O)? Unk

07.DD.35 Wermlandite (Ca,Mg)Mg7(Al,Fe)2(SO4)2(OH)18•12(H2O) P 3c1 3 2/m

07.DD.35 Nikischerite! NaFe6Al3(SO4)2(OH)18(H2O)12 R 3 3

07.DD.35 Zincaluminite Zn6Al6(SO4)2(OH)26•5(H2O) Unk Hex

07.DD.35 Woodwardite Cu4Al2(SO4)(OH)12•2-4(H2O) Unk Hex

07.DD.35 Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2•n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m

07.DD.35 Zincowoodwardite-1T! [Zn1BxAlx(OH)2][(SO4)x/2•n(H2O)],x=0.33,n.0.96 P 3 3

Other Zincaluminite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Zincaluminite :
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

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Zincaluminite

Zn6Al6(SO4)2(OH)26•5(H2O)
Dana No: 31.02.03.01 Strunz No: 07.DD.35
Locality:

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