Aluminocopiapite Mineral Data

Aluminocopiapite Mineral Data +

[Newest Minerals] [Minerals for Sale] [Tsumeb Mine] [Mineral Auctions] [Mineral Gallery]
The Mineral Gallery's Exceptional Specimens and Mineral Hall of Fame
Visa and Mastercard are Welcome

General Aluminocopiapite Information

Chemical Formula:

Al2/3Fe+++4(SO4)6O(OH)2·20(H2O)

Composition:

Molecular Weight = 1,212.08 gm

Aluminum 1.48 % Al 2.80 % Al₂O₃

Iron 18.43 % Fe 26.35 % Fe₂O₃

Hydrogen 3.49 % H 31.21 % H₂O

Sulfur 15.87 % S 39.63 % SO₃

Oxygen 60.72 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Al_0.6666Fe³⁺₄(SO₄)₆(OH)₂·20(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1947

Locality:

Link to MinDat.org Location Data.

Aluminocopiapite Image

Images:

Aluminocopiapite

Comments: Small yellow crystals of aluminocopiapite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Aluminocopiapite Crystallography

Axial Ratios:

a:b:c =0.3992:1:0.4001

Cell Dimensions:

a = 7.251, b = 18.161, c = 7.267, Z = 1; alpha = 93.983°, beta = 102.283°, gamma = 97.966° V = 923.79 Den(Calc)= 2.18

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 9.2(1), 5.58(0.8), 18.1(0.8),

Physical Properties of Aluminocopiapite

Color:

Yellow.

Diaphaniety:

Transparent to Translucent

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Earthy (Dull)

Streak:

light yellow

Optical Properties of Aluminocopiapite

Gladstone-Dale:

CI calc= 0.049 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2521,KC= 0.2651

Optical Data:

Biaxial (+), a=1.529, b=1.535, g=1.585, bire=0.0560, 2V(Calc)=40, 2V(Meas)=45.

Calculated Properties of Aluminocopiapite

Electron Density:

r_electron=2.23 gm/cc
note: r_{Aluminocopiapite}=2.18 gm/cc.

Fermion Index

Fermion Index = 0.00539
Boson Index = 0.99461

Photoelectric:

PE_{Aluminocopiapite}= 6.36 barns/electron
U=PE_{Aluminocopiapite} x r_electron= 14.15 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Aluminocopiapite is Not Radioactive

Aluminocopiapite Classification

Dana Class:

31.10.5.7 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.10)miscellaneous

(31.10.5)Copiapite Group

31.10.5.1 Copiapite FeFe4(SO4)6(OH)2·20(H2O) P1 1

31.10.5.2 Magnesiocopiapite MgFe4(SO4)6(OH)2·20(H2O) P1 1

31.10.5.3 Cuprocopiapite CuFe4(SO4)6(OH)2·20(H2O) P1 1

31.10.5.4 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2·20(H2O) P1 1

31.10.5.5 Calciocopiapite CaFe4(SO4)6(OH)2·19(H2O) P1 1

31.10.5.6 Zincocopiapite ZnFe4(SO4)6(OH)2·18(H2O) P1 1

31.10.5.7 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2·20(H2O) P1 1

Strunz Class:

VI/D.10-80 VI - Sulfates,Chromates,Molybdates and Tungstates

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

VI/D.10 - Copiapite group, Botryogen - Chaidamuite

VI/D.10-10 Botryogen MgFe(SO4)2(OH)·7(H2O) P 2₁/n 2/m

VI/D.10-20 Zincobotryogen (Zn,Mg,Mn)Fe(SO4)2(OH)·7(H2O) P 2₁/n 2/m

VI/D.10-30 Calciocopiapite CaFe4(SO4)6(OH)2·19(H2O) P1 1

VI/D.10-40 Magnesiocopiapite MgFe4(SO4)6(OH)2·20(H2O) P1 1

VI/D.10-50 Copiapite FeFe4(SO4)6(OH)2·20(H2O) P1 1

VI/D.10-60 Cuprocopiapite CuFe4(SO4)6(OH)2·20(H2O) P1 1

VI/D.10-70 Zincocopiapite ZnFe4(SO4)6(OH)2·18(H2O) P1 1

VI/D.10-80 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2·20(H2O) P1 1

VI/D.10-90 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2·20(H2O) P1 1

VI/D.10-100 Guildite CuFe(SO4)2(OH)·4(H2O) P 2₁/m 2/m

VI/D.10-110 Chaidamuite (Zn,Fe)Fe(SO4)2(OH)·4(H2O) P1 1

Other Aluminocopiapite Information

References:

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

See Also:

Links to other databases for Aluminocopiapite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

Search for Aluminocopiapite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Aluminocopiapite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Aluminocopiapite Mineral Data :

Ask about Aluminocopiapite 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 Aluminocopiapite Specimen Label here :

Aluminocopiapite

Al2/3Fe+++4(SO4)6O(OH)2·20(H2O)
Dana No: 31.10.5.7 Strunz No: VI/D.10-80
Locality:

Notes: