Javorieite
A valid IMA mineral species
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Formula:
KFeCl3
Colour:
Green
Specific Gravity:
2.82 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for the Javorie stratovolcano, Slovakia, which hosts many porphyry gold systems including the type locality.
Isostructural with:
Known synthetic analogue. The Fe analogue of chlorocalcite. Chemically identical to 'Unnamed (K-Fe Chloride)'. Compare erythrosiderite.
Extremely hygroscopic and readily oxidised if exposed to the air.
Note: isostructural with the synthetic analogue of chlorocalcite.
Extremely hygroscopic and readily oxidised if exposed to the air.
Note: isostructural with the synthetic analogue of chlorocalcite.
Unique Identifiers
Mindat ID:
47895
Long-form identifier:
mindat:1:1:47895:1
Similar Names
IMA Classification of Javorieite
Approved
IMA Formula:
KFe2+Cl3
Approval year:
2016
First published:
2018
Type description reference:
Classification of Javorieite
3.AA.40
3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
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 |
|---|---|---|
| Jav | 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 Javorieite
Colour:
Green
Density:
2.82 g/cm3 (Calculated)
Optical Data of Javorieite
Chemistry of Javorieite
Mindat Formula:
KFeCl3
Element Weights:
Elements listed:
Crystallography of Javorieite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 8.715(6) Å, b = 3.845(8) Å, c = 14.15(3) Å
Ratio:
a:b:c = 2.267 : 1 : 3.68
Unit Cell V:
474.16 ų
Z:
4
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) |
|---|---|---|---|---|---|---|---|
| 0020629 | Javorieite | Gurewitz E, Majovsky J, Shaked H (1974) Neutron-diffraction study of the magnetic structure of KFeCl3 Physical Review B9 1071-1078 | 1974 | Synthetic | 0 | 293 | |
| 0020628 | Javorieite | Gurewitz E, Majovsky J, Shaked H (1974) Neutron-diffraction study of the magnetic structure of KFeCl3 Physical Review B9 1071-1078 | 1974 | Synthetic | 0 | 293 | |
| 0020630 | Javorieite | Amit A, Horowitz A, Makovsky J (1974) Preparation and crystal structure of KFeCl3 and KFeBr3 Israel Journal of Chemistry 12 827-830 | 1974 | Synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.071 Å | (36) |
| 2.884 Å | (31) |
| 2.826 Å | (100) |
| 2.745 Å | (32) |
| 2.689 Å | (52) |
| 2.670 Å | (94) |
| 2.277 Å | (25) |
| 1.924 Å | (46) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Javorieite
General Appearance of Type Material:
Small (up to 15mm) green anhedral crystals
Place of Conservation of Type Material:
The Department of Mineralogy and Petrology, Comenius University, Bratislava, Slovakia, catalogue no. 7400
Geological Setting of Type Material:
In salt melt inclusions hosted in vein quartz in a porphyry gold deposit
Associated Minerals at Type Locality:
Synonyms of Javorieite
Other Language Names for Javorieite
Dutch:Javorieiet
German:Javorieit
Related Minerals - Strunz-mindat Grouping
| 3.AA. | Brontesite | (NH4)3PbCl5 |
| 3.AA.05 | Marshite | CuI |
| 3.AA.05 | Nantokite | CuCl |
| 3.AA.05 | 'UM1999-11:I:CuS' | Cu(I,S) |
| 3.AA.05 | Miersite | (Ag,Cu)I |
| 3.AA.10 | Tocornalite | (Ag,Hg)I (?) |
| 3.AA.10 | Iodargyrite | AgI |
| 3.AA.15 | Bromargyrite | AgBr |
| 3.AA.15 | Chlorargyrite | AgCl |
| 3.AA.20 | Sylvite | KCl |
| 3.AA.20 | Halite | NaCl |
| 3.AA.20 | Villiaumite | NaF |
| 3.AA.20 | Carobbiite | KF |
| 3.AA.20 | Griceite | LiF |
| 3.AA.25 | 'UM1998-03-Cl:Tl' | TlCl |
| 3.AA.25 | Nataliyamalikite | TlI |
| 3.AA.25 | Lafossaite | Tl(Cl,Br) |
| 3.AA.25 | Salammoniac | NH4Cl |
| 3.AA.30 | Calomel | [Hg2]2+Cl2 |
| 3.AA.30 | Moschelite | [Hg2]2+I2 |
| 3.AA.30 | Kuzminite | HgBr |
| 3.AA.35 | Neighborite | NaMgF3 |
| 3.AA.35 | Parascandolaite | KMgF3 |
| 3.AA.40 | Chlorocalcite | KCaCl3 |
| 3.AA.45 | Kolarite | PbTeCl2 |
| 3.AA.50 | Radhakrishnaite | PbTe3(Cl,S)2 |
| 3.AA.55 | Challacolloite | KPb2Cl5 |
| 3.AA.60 | Hephaistosite | TlPb2Cl5 |
| 3.AA.90 | Pseudocotunnite | K2PbCl4 |
Radioactivity
Radioactivity:
| Element | % Content | Activity (Bq/kg) | Radiation Type |
|---|---|---|---|
| Uranium (U) | 0.0000% | 0 | α, β, γ |
| Thorium (Th) | 0.0000% | 0 | α, β, γ |
| Potassium (K) | 19.4227% | 6,021 | β, γ |
For comparison:
- Banana: ~15 Bq per fruit
- Granite: 1,000–3,000 Bq/kg
- EU exemption limit: 10,000 Bq/kg
Note: Risk is shown relative to daily recommended maximum exposure to non-background radiation of 1000 µSv/year. Note that natural background radiation averages around 2400 µSv/year so in reality these risks are probably extremely overstated! With infrequent handling and safe storage natural radioactive minerals do not usually pose much risk.
Interactive Simulator:
Note: The mass selector refers to the mass of radioactive mineral present, not the full specimen, also be aware that the matrix may also be radioactive, possibly more radioactive than this mineral!
Activity: –
| Distance | Dose rate | Risk |
|---|---|---|
| 1 cm | ||
| 10 cm | ||
| 1 m |
The external dose rate (D) from a radioactive mineral is estimated by summing the gamma radiation contributions from its Uranium, Thorium, and Potassium content, disregarding daughter-product which may have a significant effect in some cases (eg 'pitchblende'). This involves multiplying the activity (A, in Bq) of each element by its specific gamma ray constant (Γ), which accounts for its unique gamma emissions. The total unshielded dose at 1 cm is then scaled by the square of the distance (r, in cm) and multiplied by a shielding factor (μshield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).
D = ((AU × ΓU) + (ATh × ΓTh) + (AK × ΓK)) / r2 × μshield
Other Information
Notes:
Extremely hygroscopic and readily oxidised if exposed to the air
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 Javorieite
mindat.org URL:
https://www.mindat.org/min-47895.html
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References for Javorieite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter 32. Mineralogical Magazine, 80 (5) 915-922 doi:10.1180/minmag.2016.080.084
Localities for Javorieite
Showing 1 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.
Slovakia (TL) | |
| Hålenius et al. (2016) +1 other reference |
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