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
IMA Classification of Kadyrelite
Approved
IMA Formula:
([Hg1+]2)3OBr3(OH)
Approval year:
1986
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 for Standard |
|---|---|---|
| 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 | R1 (%) |
|---|---|
| 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). 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)
Element Weights:
Elements listed:
Crystallography of Kadyrelite
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/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:
Synonyms of Kadyrelite
Other Language Names for Kadyrelite
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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References for Kadyrelite
Reference List:
Localities for Kadyrelite
Showing 2 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.
Russia | |
| Pervukhina et al. (2003) |
| Vasil’ev (1987) +2 other references |
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