Calciocopiapite
A valid IMA mineral species
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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.
Unique Identifiers
Mindat ID:
826
Long-form identifier:
mindat:1:1:826:6
IMA Classification of Calciocopiapite
Approved
IMA Formula:
CaFe3+4(S6+O4)6(OH)2·20H2O
First published:
1960
Classification of Calciocopiapite
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
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ccpi | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
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
Chemistry of Calciocopiapite
Mindat Formula:
CaFe3+4(SO4)6(OH)2 · 20H2O
Element Weights:
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) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45a : [Sulfates, arsenates, selenates, antimonates] | |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 50 : Coal and/or oil shale minerals | <0.36 |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 54 : Coal and other mine fire minerals (see also #51 and #56) |
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
Relationship of Calciocopiapite to other Species
Member of:
Other Members of Copiapite 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. 1 : P1 |
Common Associates
Associations Based on Photo Data:
| 1 photo of Calciocopiapite associated with Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O |
Related Minerals - Strunz-mindat Grouping
| 7.DB.05 | Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O |
| 7.DB.05 | Aubertite | CuAl(SO4)2Cl · 14H2O |
| 7.DB.05 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O |
| 7.DB.10 | Rostite | Al(SO4)(OH) · 5H2O |
| 7.DB.10 | Khademite | Al(SO4)F · 5H2O |
| 7.DB.15 | Jurbanite | Al(SO4)(OH) · 5H2O |
| 7.DB.20 | Minasragrite | (V4+O)(SO4) · 5H2O |
| 7.DB.20 | Anorthominasragrite | (V4+O)(SO4) · 5H2O |
| 7.DB.20 | Orthominasragrite | (V4+O)(SO4) · 5H2O |
| 7.DB.25 | Bobjonesite | (V4+O)(SO4) · 3H2O |
| 7.DB.27 | Karpovite | Tl2VO(SO4)2(H2O) |
| 7.DB.30 | Metahohmannite | Fe3+2(SO4)2O · 4H2O |
| 7.DB.30 | Hohmannite | Fe3+2(SO4)2O · 8H2O |
| 7.DB.30 | Amarantite | Fe3+2(SO4)2O · 7H2O |
| 7.DB.35 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O |
| 7.DB.35 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O |
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.
Internet Links for Calciocopiapite
mindat.org URL:
https://www.mindat.org/min-826.html
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References for Calciocopiapite
Localities for Calciocopiapite
Showing 3 localities.
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Azerbaijan (TL) | |
| Kashkai M A (1960) +2 other references |
Italy | |
| mikon-online.com (n.d.) +2 other references |
USA | |
| Excalibur Mineral Company specimen |
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Sulphur Hole, Calico, Calico District, Calico Mts, San Bernardino County, California, USA