Calciocopiapite Mineral Data

Calciocopiapite Mineral Data +

General Calciocopiapite Information

Chemical Formula:

CaFe+++4(SO4)6(OH)2·19(H2O)

Composition:

Molecular Weight = 1,216.15 gm

Calcium 3.30 % Ca 4.61 % CaO

Iron 18.37 % Fe 26.26 % Fe₂O₃

Hydrogen 3.32 % H 29.63 % H₂O

Sulfur 15.82 % S 39.50 % SO₃

Oxygen 59.20 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaFe³⁺₄(SO₄)₆(OH)₂·19(H₂O)

IMA Status:

Approved IMA 1960

Locality:

Link to MinDat.org Location Data.

Calciocopiapite Image

Images:

Calciocopiapite

Comments: Greenish yellow crystalline crust of calciocopiapite.
Location: Borate, San Bernardino County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Calciocopiapite Crystallography

Axial Ratios:

a:b:c =0.4036:1:0.3898

Cell Dimensions:

a = 7.35, b = 18.21, c = 7.1, Z = 1; alpha = 85.52°, beta = 103.55°, gamma = 100.62° V = 905.24 Den(Calc)= 2.23

Crystal System:

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

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

By Intensity(I/I_o): 2.809(1), 3.027(1), 3.108(1),

Physical Properties of Calciocopiapite

Color:

Brownish yellow, Grayish yellow.

Density:

2.22

Diaphaniety:

Transparent to Translucent

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Pearly

Streak:

yellow white

Optical Properties of Calciocopiapite

Gladstone-Dale:

CI meas= 0.075 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.079 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2422,KPDmeas= 0.2432,KC= 0.2631

Optical Data:

Biaxial (+), b=1.54, 2V(Meas)=50-60.

Calculated Properties of Calciocopiapite

Electron Density:

r_electron=2.26 gm/cc
note: r_{Calciocopiapite}=2.22 gm/cc.

Fermion Index

Fermion Index = 0.00541
Boson Index = 0.99459

Photoelectric:

PE_{Calciocopiapite}= 6.69 barns/electron
U=PE_{Calciocopiapite} x r_electron= 15.14 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Calciocopiapite is Not Radioactive

Calciocopiapite Classification

Dana Class:

31.10.5.5 (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.10-30 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 Calciocopiapite 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 Calciocopiapite :
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

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Calciocopiapite

CaFe+++4(SO4)6(OH)2·19(H2O)
Dana No: 31.10.5.5 Strunz No: VI/D.10-30
Locality:

Notes: