Coccinite
A valid IMA mineral species - grandfathered
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About Coccinite
Formula:
HgI2
Colour:
Orange-red, deep red
Hardness:
2
Crystal System:
Tetragonal
Type Locality:
Unique Identifiers
Mindat ID:
1100
Long-form identifier:
mindat:1:1:1100:2
IMA Classification of Coccinite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Hg2+I1-2
Classification of Coccinite
3.AB.10
3 : HALIDES
A : Simple halides, without H2O
B : M:X = 1:2
3 : HALIDES
A : Simple halides, without H2O
B : M:X = 1:2
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 |
|---|---|---|
| Cci | 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 Coccinite
Transparency:
Translucent
Colour:
Orange-red, deep red
Streak:
Red
Hardness:
2 on Mohs scale
Cleavage:
Distinct/Good
On {001}.
On {001}.
Chemistry of Coccinite
Mindat Formula:
HgI2
Elements listed:
CAS Registry number:
Crystallography of Coccinite
Crystal System:
Tetragonal
Class (H-M):
4/mmm(4/m2/m2/m) - Ditetragonal Dipyramidal
Space Group:
P42/nmc
Setting:
P42/nmc
Cell Parameters:
a = 4.376(4) Å, c = 12.41(1) Å
Ratio:
a:c = 1 : 2.836
Unit Cell V:
237.64 ų (Calculated from Unit Cell)
Morphology:
Forms include {100} and {102}.
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0019553 | Coccinite | Schwarzenbach D, Birkedal H, Hostettler M, Fischer P (2007) Neutron diffraction investigation of the temperature dependence of crystal structure and thermal motions of red HgI2 Acta Crystallographica B63 828-835 |  | 2007 | synthetic, Fluka 83379 | 0 | 293 |
| 0019552 | Coccinite | Schwarzenbach D, Birkedal H, Hostettler M, Fischer P (2007) Neutron diffraction investigation of the temperature dependence of crystal structure and thermal motions of red HgI2 Acta Crystallographica B63 828-835 | | 2007 | synthetic, Fluka 83379 | 0 | 293 |
| 0010671 | Coccinite | Schwarzenbach D (1969) The crystal structure and one-dimensional disorder of the orange modification of HgI2 Zeitschrift fur Kristallographie 128 97-114 |  | 1969 | synthetic | 0 | 293 |
| 0019551 | Coccinite | Schwarzenbach D, Birkedal H, Hostettler M, Fischer P (2007) Neutron diffraction investigation of the temperature dependence of crystal structure and thermal motions of red HgI2 Acta Crystallographica B63 828-835 | | 2007 | synthetic, Fluka 83379 | 0 | 200 |
| 0019550 | Coccinite | Schwarzenbach D, Birkedal H, Hostettler M, Fischer P (2007) Neutron diffraction investigation of the temperature dependence of crystal structure and thermal motions of red HgI2 Acta Crystallographica B63 828-835 | | 2007 | synthetic, Fluka 83379 | 0 | 100 |
| 0019549 | Coccinite | Schwarzenbach D, Birkedal H, Hostettler M, Fischer P (2007) Neutron diffraction investigation of the temperature dependence of crystal structure and thermal motions of red HgI2 Acta Crystallographica B63 828-835 | | 2007 | synthetic, Fluka 83379 | 0 | 60 |
| 0019548 | Coccinite | Schwarzenbach D, Birkedal H, Hostettler M, Fischer P (2007) Neutron diffraction investigation of the temperature dependence of crystal structure and thermal motions of red HgI2 Acta Crystallographica B63 828-835 | | 2007 | synthetic, Fluka 83379 | 0 | 30 |
| 0019547 | Coccinite | Schwarzenbach D, Birkedal H, Hostettler M, Fischer P (2007) Neutron diffraction investigation of the temperature dependence of crystal structure and thermal motions of red HgI2 Acta Crystallographica B63 828-835 | | 2007 | synthetic, Fluka 83379 | 0 | 10 |
| 0016999 | Coccinite | Bijvoet J, Claassen A, Karssen A (1926) The crystal structure of red mercuric iodide _cod_database_code 1010063 Proceedings of the Koninklijke Nederlandse Academie van Wetenschappen 29 529-546 | 1926 | 0 | 293 |
CIF Raw Data - click here to close
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47g : [Halogen-bearing surface weathering minerals] | |
| 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) |
Geological Setting:
Sublimation product from burning pyritic slate.
Type Occurrence of Coccinite
Place of Conservation of Type Material:
No designated type material.
Synonyms of Coccinite
Other Language Names for Coccinite
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 3.AB. | Manuelarossiite | PbCaAlF7 |
| 3.AB. | Fluorocronite | PbF2 |
| 3.AB.05 | Tolbachite | CuCl2 |
| 3.AB.15 | Sellaite | MgF2 |
| 3.AB.20 | Lawrencite | (Fe2+,Ni)Cl2 |
| 3.AB.20 | Scacchite | MnCl2 |
| 3.AB.20 | Chloromagnesite | MgCl2 |
| 3.AB.25 | Fluorite | CaF2 |
| 3.AB.25 | Frankdicksonite | BaF2 |
| 3.AB.25 | Strontiofluorite | SrF2 |
| 3.AB.30 | Tveitite-(Y) | (Y, Na)6Ca6Ca6(Ca,Na)F42 |
| 3.AB.35 | Gagarinite-(Y) | NaCaYF6 |
| 3.AB.35 | Polezhaevaite-(Ce) | NaSrCeF6 |
| 3.AB.35 | Gagarinite-(Ce) | Na(REExCa1-x)(REEyCa1-y)F6 |
| 3.AB.37 | Calcioaravaipaite | PbCa2AlF9 |
| 3.AB.85 | Cotunnite | PbCl2 |
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 Coccinite
mindat.org URL:
https://www.mindat.org/min-1100.html
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References for Coccinite
Reference List:
Beudant, François-Sulpice (1832) Traité élémentaire de minéralogie. Deuxiéme Edition [Elementary Treatise on Mineralogy. Second Edition] (2nd ed.) Vol. 2 - Tome II [Volume II]. Chez Verdière. p.515 - as Iodure de Mercure
Nest, J. S. van (1910) Beiträge zur Kenntnis der Quecksilberhalogenide. Zeitschrift für Kristallographie, 47 (1-6). p.263-272. doi:10.1524/zkri.1910.47.1.263
Localities for Coccinite
Showing 4 localities.
symbol to view information about a locality.
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.
Australia | |
| Moses (1901) +2 other references |
Germany | |
| Heidtke (2001) |
| Witzke (1997) |
Mexico (TL) | |
| Antonio del Castillo (1889) +1 other reference |
Quick NavTopAbout CocciniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography Crystal StructureGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Backofen Mine, Landsberg, Obermoschel, Nordpfälzer Land, Donnersbergkreis, Rhineland-Palatinate, Germany