Magnesiocopiapite
A valid IMA mineral species - grandfathered
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About Magnesiocopiapite
Formula:
MgFe3+4(SO4)6(OH)2 · 20H2O
Hardness:
2½ - 3
Crystal System:
Triclinic
Member of:
Name:
In allusion to its composition with dominant MAGNESIum and its relationship to COPIAPITE.
Type Locality:
Unique Identifiers
Mindat ID:
2486
Long-form identifier:
mindat:1:1:2486:6
GUID
(UUID V4):
(UUID V4):
9fceb306-3d8f-434e-8ce3-f58bf436604c
IMA Classification of Magnesiocopiapite
Approved, 'Grandfathered' (first described prior to 1959)
Classification of Magnesiocopiapite
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
31.10.5.2
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 |
---|---|---|
Mcpi | 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 Magnesiocopiapite
Hardness:
2½ - 3 on Mohs scale
Chemistry of Magnesiocopiapite
Mindat Formula:
MgFe3+4(SO4)6(OH)2 · 20H2O
Crystallography of Magnesiocopiapite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.3451(4) Å, b = 18.794(1) Å, c = 7.3891(4) Å
α = 91.369(5)°, β = 102.169(4)°, γ = 98.831(4)°
α = 91.369(5)°, β = 102.169(4)°, γ = 98.831(4)°
Ratio:
a:b:c = 0.391 : 1 : 0.393
Unit Cell V:
983.6 ų
Comment:
Synthetic (Majzlan & Michallik, 2007).
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0006122 | Magnesiocopiapite | Majzlan J, Kiefer B (2006) An X-ray and neutron-diffraction study of synthetic ferricopiapite, Fe14/3(SO4)6(OD,OH)2(D2O,H2O)20, and ab-initio calculations on the structure of magnesiocopiapite MgFe4(SO4)6(OH)2(H2O)20 The Canadian Mineralogist 44 1227-1237 | 2006 | 0 | 293 | ||
0010726 | Magnesiocopiapite | Susse P (1972) Crystal structure and hydrogen bonding of copiapite Zeitschrift fur Kristallographie 135 34-55 | 1972 | Alcaparrosa, Chile | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
18.57 Å | (90) |
9.29 Å | (100) |
6.192 Å | (45) |
5.600 Å | (80) |
4.208 Å | (40) |
3.588 Å | (50) |
3.506 Å | (40) |
Comments:
Sample from Knoxville, California, USA.
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 Magnesiocopiapite
Place of Conservation of Type Material:
No designated type specimen.
Associated Minerals at Type Locality:
Other Language Names for Magnesiocopiapite
Varieties of Magnesiocopiapite
Knoxvillite | A chromiferous iron sulphate, not IMA-approved. May be a mixture of magnesiocopiapite and redingtonite, or could be a chromiferous variety of magnesiocopiapite. Originally reported from Redington Mine, Knoxville, Napa Co., California, USA. Identity of ... |
Relationship of Magnesiocopiapite to other Species
Member of:
Other Members of this group:
Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
Calciocopiapite | CaFe3+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 |
Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O | Tric. 1 : P1 |
Common Associates
Associated Minerals Based on Photo Data:
15 photos of Magnesiocopiapite associated with Römerite | Fe2+Fe3+2(SO4)4 · 14H2O |
12 photos of Magnesiocopiapite associated with Pickeringite | MgAl2(SO4)4 · 22H2O |
11 photos of Magnesiocopiapite associated with Halotrichite | FeAl2(SO4)4 · 22H2O |
6 photos of Magnesiocopiapite associated with Metavoltine | K2Na6Fe2+Fe3+6O2(SO4)12 · 18H2O |
4 photos of Magnesiocopiapite associated with Fibroferrite | Fe3+(SO4)(OH) · 5H2O |
4 photos of Magnesiocopiapite associated with Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O |
4 photos of Magnesiocopiapite associated with Szomolnokite | FeSO4 · H2O |
3 photos of Magnesiocopiapite associated with Krausite | KFe(SO4)2 · H2O |
2 photos of Magnesiocopiapite associated with Sulphur | S8 |
1 photo of Magnesiocopiapite associated with Melanterite | Fe2+(H2O)6SO4 · H2O |
Related Minerals - Strunz-mindat Grouping
7.DB.05 | Aubertite | CuAl(SO4)2Cl · 14H2O |
7.DB.05 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O |
7.DB.05 | Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O |
7.DB.10 | Khademite | Al(SO4)F · 5H2O |
7.DB.10 | Rostite | Al(SO4)(OH) · 5H2O |
7.DB.15 | Jurbanite | Al(SO4)(OH) · 5H2O |
7.DB.20 | Minasragrite | (V4+O)(SO4) · 5H2O |
7.DB.20 | Orthominasragrite | (V4+O)(SO4) · 5H2O |
7.DB.20 | Anorthominasragrite | (V4+O)(SO4) · 5H2O |
7.DB.25 | Bobjonesite | (V4+O)(SO4) · 3H2O |
7.DB.27 | Karpovite | Tl2VO(SO4)2(H2O) |
7.DB.30 | Amarantite | Fe3+2(SO4)2O · 7H2O |
7.DB.30 | Hohmannite | Fe3+2(SO4)2O · 8H2O |
7.DB.30 | Metahohmannite | Fe3+2(SO4)2O · 4H2O |
7.DB.35 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O |
7.DB.35 | Calciocopiapite | CaFe3+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 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O |
7.DB.35 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O |
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 Magnesiocopiapite
mindat.org URL:
https://www.mindat.org/min-2486.html
Please feel free to link to this page.
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External Links:
References for Magnesiocopiapite
Localities for Magnesiocopiapite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Australia | |
| Ashley et al. (1999) |
Austria | |
| Taucher (1993) +2 other references |
| Kolitsch (2017) |
Kolitsch et al. (2022) | |
| Meixner (1954) |
Bolivia | |
| Moricz et al. (2009) |
Bulgaria | |
| Dimitrova +2 other references |
Canada | |
| Zodrow (1980) |
Chile | |
| SEM-EDS by Joy Desor |
G. Möhn & J. Desor | |
SEM-EDS by Igor V. Pekov | |
| samples analysed by Gerhard Moehn and ... +5 other references |
China | |
| Yao +6 other references |
| Kaiyin Bai and Zhaoxin Han (2007) |
Costa Rica | |
| Rodríguez et al. (2017) |
| Ulloa et al. (2018) |
Czech Republic | |
| Rost (1937) +1 other reference |
| Hyrsl J. +1 other reference |
| Jirásek (2001) |
| Matýsek D. |
| Matýsek D. |
| Matýsek D. |
| Hršelová et al. (2013) |
France | |
| Lheur et al. (2011) |
| Gol et al. (2010) |
Gol et al. (2010) | |
| Bourgoin et al. (2011) |
Germany | |
| Nasdala et al. (1992) |
| Wittern (2001) |
| T. Witzke & F. Rüger: Lapis 1998 (7/8) |
| Gerstenberg et al. (11/21) |
Greece | |
| Schnorrer (1995) +2 other references |
Branko Rieck collection | |
| Branko Rieck collection |
Branko Rieck collection | |
Hungary | |
| Lovász A. (2014) |
| Szakáll: Minerals of Rudabánya |
Sánoor Szakáll et al. (1997) | |
| Geoda - Journal of the Hungarian ... |
Iran | |
| Khorasanipour et al. (2011) |
Italy | |
| Russo et al. (2017) |
| Piccoli et al. (2007) |
| Piccoli et al. (2007) |
| Fernando Caboni et al. (2024) |
Fernando Caboni et al. (2024) | |
| Mauro (2020) |
Mauro D. (2016) +1 other reference | |
Peru | |
| Hyršl (2010) +1 other reference |
Poland | |
| Siuda (2004) +1 other reference |
| Mochnacka et al. (2015) |
| Kruszewski (2013) |
| Kruszewski et al. (2019) |
Slovakia | |
| Koděra (1986) |
Spain | |
| Romero et al. (2006) +1 other reference |
| Joan Rosell (2022) |
| Rosell-Riba et al. (2022) |
| Joan Abella i Creus (Joanabellacreus@gmail.com) |
| Crespo et al. (2017) |
Switzerland | |
| Stalder et al. (1998) +1 other reference |
| Ansermet et al. (2012) |
Ansermet et al. (2012) | |
USA | |
| Williams et al. (1995) |
| Bayliss et al. (1985) +1 other reference |
| www.mineralsocal.org +3 other references |
| American Mineralogist (1939) +1 other reference |
| Jamieson et al. (2005) |
| Minerals of Colorado (1997) |
| Northrop et al. (1996) |
| Environmental Geology: 45: 47. +1 other reference |
| Coskren et al. (2000) +1 other reference |
| Dietrich (1990) |
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Wieściszowice, Gmina Marciszów, Kamienna Góra County, Lower Silesian Voivodeship, Poland