Kadyrelite
A valid IMA mineral species
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Formula:
[Hg2]2+3OBr3(OH)
Colour:
Bright to dull orange
Lustre:
Adamantine, Vitreous
Hardness:
2½ - 3
Specific Gravity:
8.79 (Calculated)
Crystal System:
Isometric
Name:
For the Kadyrel deposit, Russia, where it occurs.
Unique Identifiers
Mindat ID:
2128
Long-form identifier:
mindat:1:1:2128:5
GUID
(UUID V4):
(UUID V4):
076686d7-4314-4c2b-aecc-0b3e66169d29
IMA Classification of Kadyrelite
Approved
IMA Formula:
([Hg1+]2)3OBr3(OH)
First published:
1987
Classification of Kadyrelite
3.DD.05
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
D : With Hg
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
D : With Hg
10.5.4.2
10 : OXYHALIDES AND HYDROXYHALIDES
5 : Am(O,OH)pXq
10 : OXYHALIDES AND HYDROXYHALIDES
5 : Am(O,OH)pXq
8.5.7
8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
5 : Halides of Zn and Hg
8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
5 : Halides of Zn and Hg
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 |
---|---|---|
Kad | 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 Kadyrelite
Adamantine, Vitreous
Transparency:
Transparent
Colour:
Bright to dull orange
Streak:
Orange-yellow
Hardness:
2½ - 3 on Mohs scale
Hardness:
VHN25=143 - 192 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Conchoidal
Density:
8.79 g/cm3 (Calculated)
Optical Data of Kadyrelite
Type:
Isotropic
Bireflectance:
None
Reflectivity:
Wavelength | R |
---|---|
436nm | 27.7% |
460nm | 25.3% |
500nm | 21.2% |
546nm | 19.4% |
589nm | 18.1% |
620nm | 17.8% |
656nm | 16.6% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 27.7%.
Colour in reflected light:
Grayish-white, with weak bluish tint visible at high magnifications.
Internal Reflections:
Intense orange
Comments:
n>2
Chemistry of Kadyrelite
Mindat Formula:
[Hg2]2+3OBr3(OH)
Elements listed:
Crystallography of Kadyrelite
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Ia3d
Setting:
Ia3d
Cell Parameters:
a = 16.22 Å
Unit Cell V:
4,267.29 ų (Calculated from Unit Cell)
Z:
16
Morphology:
grains, to 0.5 mm
Comment:
Space Group: by analogy to eglestonite
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.06 Å | (30) |
3.32 Å | (100) |
2.63 Å | (20) |
2.57 Å | (60-70) |
2.344 Å | (20) |
1.912 Å | (80-90) |
1.731 Å | (20) |
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]) |
Type Occurrence of Kadyrelite
General Appearance of Type Material:
In cavities in carbonate veins, or rarely forms individual grains up to 0.5 mm .
Place of Conservation of Type Material:
Museum of the Institute of Geology and Geophysics, Novosibirsk, Russia, and at the (was) Museum of the Leningrad Mining Institute, Saint Petersburg, Russia.
Geological Setting of Type Material:
Mercury deposit
Associated Minerals at Type Locality:
Reference:
Vasil’ev, V.I. (1987) Kadyrelite Hg4(Br, Cl)2O – a new oxyhalide of mercury from the Kadyrelsky ore occurrence. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 116: 733–737.
Synonyms of Kadyrelite
Other Language Names for Kadyrelite
German:Kadyrelit
Spanish:Kadyrelita
Relationship of Kadyrelite to other Species
Forms a series with:
Related Minerals - Strunz-mindat Grouping
3.DD. | Mikecoxite | [CHg4]OCl2 |
3.DD.05 | Eglestonite | [Hg2]2+3OCl3(OH) |
3.DD.10 | Poyarkovite | [Hg2]2+3Cl2O2 |
3.DD.15 | Hanawaltite | [Hg2]2+3Hg2+(Cl,OH)2O3 |
3.DD.20 | Terlinguaite | [Hg3]4+Hg2+Cl2O2 |
3.DD.25 | Pinchite | Hg2+5Cl2O4 |
3.DD.30 | Gianellaite | [(Hg2N)2](SO4)(H2O)x |
3.DD.30 | Mosesite | (Hg2N)(Cl,SO4,MoO4) · H2O |
3.DD.35 | Kleinite | (Hg2N)(Cl,SO4) · nH2O |
3.DD.40 | Tedhadleyite | [Hg2]2+5Hg2+I2(Cl,Br)2O4 |
3.DD.45 | Vasilyevite | [Hg2]2+10I3Br2Cl[CO3]O6 |
3.DD.50 | Aurivilliusite | [Hg2]2+Hg2+2(I,Br,Cl)2O2 |
3.DD.55 | Terlinguacreekite | Hg2+3Cl2O2 |
3.DD.60 | Kelyanite | [Hg]2+6Sb3+BrCl2O6 |
3.DD.65 | Comancheite | Hg2+55N3-24(NH2,OH)4(Cl,Br)34 |
3.DD.70 | Gaildunningite | Hg2+3[NHg2+2]18(Cl,I,OH,Br,S)24 |
Other Information
Notes:
In 40% KOH the mineral immediately turns black; in HCl, it slowly becomes dark gray, and it is readily soluble in 1:1 HNO3, leaving a cotton-like white residue.
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 Kadyrelite
mindat.org URL:
https://www.mindat.org/min-2128.html
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Please feel free to link to this page.
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References for Kadyrelite
Reference List:
Localities for Kadyrelite
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.
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