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)

Environment:

Oxidized weathering zone of a magnetite-pyrite deposit.

IMA Status:

Approved IMA 1960

Locality:

Dashkesan deposit, Middle Caucasus Mountains, Azerbaijan. Link to MinDat.org Location Data.

Name Origin:

Named as the calcium member of the copiapite group.

Name Pronunciation:

Calciocopiapite + Pronunciation

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 - Pinacoidal H-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

Diaphaneity:

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
Ncalc = 1.58 - 1.59

Optical Data:

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

Calculated Properties of Calciocopiapite

Electron Density:

Bulk Density (Electron Density)=2.26 gm/cc
note: Specific Gravity of Calciocopiapite =2.22 gm/cc.

Fermion Index:

Fermion Index = 0.0054142347
Boson Index = 0.9945857653

Photoelectric:

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

Radioactivity:

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

Calciocopiapite Classification

Dana Class:

31.10.05.05 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.10)miscellaneous

(31.10.05)Copiapite Group

31.10.05.01 Copiapite FeFe4(SO4)6(OH)2•20(H2O) P1 1

31.10.05.02 Magnesiocopiapite MgFe4(SO4)6(OH)2•20(H2O) P1 1

31.10.05.03 Cuprocopiapite CuFe4(SO4)6(OH)2•20(H2O) P1 1

31.10.05.04 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2•20(H2O) P1 1

31.10.05.05 Calciocopiapite CaFe4(SO4)6(OH)2•19(H2O) P1 1

31.10.05.06 Zincocopiapite ZnFe4(SO4)6(OH)2•18(H2O) P1 1

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

Strunz Class:

07.DB.35 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DB -With only medium-sized cations; insular octahedra and finite groups

07.DB.35 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2•20(H2O) P1 1

07.DB.35 Copiapite FeFe4(SO4)6(OH)2•20(H2O) P1 1

07.DB.35 Calciocopiapite CaFe4(SO4)6(OH)2•19(H2O) P1 1

07.DB.35 Cuprocopiapite CuFe4(SO4)6(OH)2•20(H2O) P1 1

07.DB.35 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2•20(H2O) P1 1

07.DB.35 Magnesiocopiapite MgFe4(SO4)6(OH)2•20(H2O) P1 1

07.DB.35 Zincocopiapite ZnFe4(SO4)6(OH)2•18(H2O) P1 1

Other Calciocopiapite Information

References:

NAME( AntBidBlaNic5) 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 - 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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Calciocopiapite

CaFe+++4(SO4)6(OH)2•19(H2O)
Dana No: 31.10.05.05 Strunz No: 07.DB.35
Locality:

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