Magnesiocopiapite (original) (raw)
A valid IMA mineral species - grandfathered
About MagnesiocopiapiteHide
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Formula:
MgFe3+4(SO4)6(OH)2 · 20H2O
Name:
In allusion to its composition with dominant MAGNESIum and its relationship to COPIAPITE.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2486:6
9fceb306-3d8f-434e-8ce3-f58bf436604c
IMA Classification of MagnesiocopiapiteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of MagnesiocopiapiteHide
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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
31.10.5.2
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
10 : Miscellaneous
Mineral SymbolsHide
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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 MagnesiocopiapiteHide
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Chemistry of MagnesiocopiapiteHide
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Mindat Formula:
MgFe3+4(SO4)6(OH)2 · 20H2O
Crystallography of MagnesiocopiapiteHide
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Class (H-M):
1 - Pinacoidal
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)°
Ratio:
a:b:c = 0.391 : 1 : 0.393
Comment:
Synthetic (Majzlan & Michallik, 2007).
Crystal StructureHide
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X-Ray Powder DiffractionHide
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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 EnvironmentHide
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Type Occurrence of MagnesiocopiapiteHide
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Place of Conservation of Type Material:
No designated type specimen.
Associated Minerals at Type Locality:
Other Language Names for MagnesiocopiapiteHide
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Varieties of MagnesiocopiapiteHide
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| 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 SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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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 MagnesiocopiapiteHide
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References for MagnesiocopiapiteHide
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Reference List:
Localities for MagnesiocopiapiteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- 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.