Calciocopiapite
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About Calciocopiapite
Formula:
CaFe3+4(SO4)6(OH)2 · 20H2O
Colour:
Grayish yellow to brownish yellow
Hardness:
2½ - 3
Specific Gravity:
2.225 (Calculated)
Crystal System:
Triclinic
Member of:
Name:
Calcium member of the copapite group.
This page provides mineralogical data about Calciocopiapite.
Classification of Calciocopiapite
Approved
6/0.0-30
7.DB.35
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
31.10.5.5
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
10 : Miscellaneous
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
10 : Miscellaneous
Physical Properties of Calciocopiapite
Transparency:
Translucent
Colour:
Grayish yellow to brownish yellow
Hardness:
2½ - 3 on Mohs scale
Density:
2.225 g/cm3 (Calculated)
Optical Data of Calciocopiapite
Type:
Biaxial
Chemical Properties of Calciocopiapite
Formula:
CaFe3+4(SO4)6(OH)2 · 20H2O
Crystallography of Calciocopiapite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.35 Å, b = 18.21 Å, c = 7.01 Å
α = 85.52°, β = 103.55°, γ = 100.62°
α = 85.52°, β = 103.55°, γ = 100.62°
Ratio:
a:b:c = 0.404 : 1 : 0.385
Unit Cell V:
895.90 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Powdery crusts.
Comment:
By analogy to copiapite.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.108 Å | (10) |
3.027 Å | (10) |
2.809 Å | (10) |
1.860 Å | (10) |
3.458 Å | (9) |
1.267 Å | (9) |
1.244 Å | (9) |
Type Occurrence of Calciocopiapite
General Appearance of Type Material:
powdery crusts
Geological Setting of Type Material:
Oxidized zone of a pyrite-magnetite deposit.
Associated Minerals at Type Locality:
Synonyms of Calciocopiapite
Other Language Names for Calciocopiapite
German:Calciocopiapit
Spanish:Calciocopiapita
Relationship of Calciocopiapite to other Species
Member of:
Other Members of this group:
Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O | Tric. |
Related Minerals - Nickel-Strunz Grouping
7.DB.05 | Aubertite | CuAl(SO4)2Cl · 14H2O | Tric. 1 |
7.DB.05 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O | Tric. 1 : P1 |
7.DB.05 | Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O | Tric. |
7.DB.10 | Khademite | Al(SO4)F · 5H2O | Orth. mmm (2/m 2/m 2/m) |
7.DB.10 | Rostite | Al(SO4)(OH) · 5H2O | Orth. mmm (2/m 2/m 2/m) |
7.DB.15 | Jurbanite | Al(SO4)(OH) · 5H2O | Mon. |
7.DB.20 | Minasragrite | (V4+O)(SO4) · 5H2O | Mon. 2/m |
7.DB.20 | Orthominasragrite | (V4+O)(SO4) · 5H2O | Orth. mm2 : Pmn21 |
7.DB.20 | Anorthominasragrite | (V4+O)(SO4) · 5H2O | Tric. 1 : P1 |
7.DB.25 | Bobjonesite | (V4+O)(SO4) · 3H2O | Mon. 2/m |
7.DB.30 | Amarantite | Fe3+2(SO4)2O · 7H2O | Tric. 1 |
7.DB.30 | Hohmannite | Fe3+2(SO4)2O · 8H2O | Tric. 1 |
7.DB.30 | Metahohmannite | Fe3+2(SO4)2O · 4H2O | Tric. 1 : P1 |
7.DB.35 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O | Tric. |
Related Minerals - Dana Grouping (8th Ed.)
31.10.5.1 | Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
31.10.5.2 | Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
31.10.5.3 | Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
31.10.5.4 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
31.10.5.6 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O | Tric. |
31.10.5.7 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Calciocopiapite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kashkai M A, Alijev R M (1960) The new mineral - calciocopiapite (tuciit) of the capiapite group and the characteristics of this group in general. Trudy Azerbaĭdzhanskogo Geograficheskogo Obshchestva 1960, 49-76
Fleischer M (1962) New mineral names. American Mineralogist: 47: 807.
Majzlan, J. & Michallik, R. (2007): The crystal structures, solid solutions, and infrared spectra of copiapite-group minerals. Mineralogical Magazine 71, 553-569.
Internet Links for Calciocopiapite
mindat.org URL:
https://www.mindat.org/min-826.html
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External Links:
Mineral Dealers:
Localities for Calciocopiapite
Locality List




All localities listed without proper references should be considered as questionable.
Azerbaijan (TL) | |
| Kashkai M A, Alijev R M (1960) The new mineral - calciocopiapite (tuciit) of the capiapite group and the characteristics of this group in general. Trudy Azerbaĭdzhanskogo Geograficheskogo Obshchestva 1960, 49-76; Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow |
USA | |
| Excalibur Mineral Co. |
Sulphur Hole, Calico, Calico District, Calico Mts, San Bernardino Co., California, USA