Ferricopiapite Mineral Data

Ferricopiapite Mineral Data +

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General Ferricopiapite Information

Chemical Formula:

Fe+++2/3Fe+++4(SO4)6(OH)2·20(H2O)

Composition:

Molecular Weight = 1,231.32 gm

Iron 21.17 % Fe 30.26 % Fe₂O₃

Hydrogen 3.44 % H 30.72 % H₂O

Sulfur 15.63 % S 39.01 % SO₃

Oxygen 59.77 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺_0.6666Fe³⁺₄(SO₄)₆(OH)₂·20(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1938

Locality:

Link to MinDat.org Location Data.

Ferricopiapite Image

Images:

Ferricopiapite

Comments: Earthy, yellow ferricopiapite, variety chalcanthite.
Location: Bisbee, Cochise County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Ferricopiapite Goldichite Coquimbite

Comments: Prismatic to fibrous crystals of goldichite on white massive coquimbite with yellow ferricopiapite.
Location: Dexter No. 7 Mine, Calf Mesa, San Rafael Swell, Emery County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferricopiapite Crystallography

Axial Ratios:

a:b:c =0.4027:1:0.3989

Cell Dimensions:

a = 7.394, b = 18.36, c = 7.324, Z = 1; alpha = 93.8°, beta = 102.2°, gamma = 98.9° V = 958.00 Den(Calc)= 2.13

Crystal System:

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

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

By Intensity(I/I_o): 9.06(1), 3.58(0.8), 5.58(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Majzlan J , Navrotsky A , McCleskey R B , Alpers C N , European Journal of Mineralogy , 18 (2006) p.175-186, Thermodynamic properties and crystal structure refinement of, ferricopiapite, coquimbite, rhomboclase, and Fe2(SO4)3(H2O)5, Locality: synthetic

Physical Properties of Ferricopiapite

Cleavage:

[???] Perfect

Color:

Yellow, Orange.

Density:

2.1

Diaphaniety:

Transparent to Translucent

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Pearly

Streak:

light yellow

Optical Properties of Ferricopiapite

Gladstone-Dale:

CI meas= -0.058 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.043 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2805,KPDmeas= 0.2845,KC= 0.2688

Optical Data:

Biaxial (+), a=1.575, g=1.62, bire=0.0450, 2V(Meas)=74.

Calculated Properties of Ferricopiapite

Electron Density:

r_electron=2.17 gm/cc
note: r_{Ferricopiapite}=2.13 gm/cc.

Fermion Index

Fermion Index = 0.00595
Boson Index = 0.99405

Photoelectric:

PE_{Ferricopiapite}= 7.09 barns/electron
U=PE_{Ferricopiapite} x r_electron= 15.39 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ferricopiapite is Not Radioactive

Ferricopiapite Classification

Dana Class:

31.10.5.4 (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.10-90 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 Ferricopiapite 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 Ferricopiapite :
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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Print or Cut-and-Paste your Ferricopiapite Specimen Label here :

Ferricopiapite

Fe+++2/3Fe+++4(SO4)6(OH)2·20(H2O)
Dana No: 31.10.5.4 Strunz No: VI/D.10-90
Locality:

Notes: