Avdoninite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Avdoninite
Formula:
K2Cu5(OH)4Cl8 · H2O
Colour:
Green
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
3.03
Crystal System:
Monoclinic
Name:
Named in honor of Vladimir Nikolayevich Avdonin (Владимир Николаевич Авдонин) (10 June 1925, Republic of Mordovia, USSR - 1 December 2017) of the Urals State Mining Academy.
A fumarole mineral. Also known as an anthropogenic product, forming pseudomorphs after steel (?) objects and oval flattened accumulations (Bushmakin et al., 1998).
Related to the synthetic phase K2Cu5Cl8(OH)4.2H2O (Kahlenberg, 2004).
Related to the synthetic phase K2Cu5Cl8(OH)4.2H2O (Kahlenberg, 2004).
Unique Identifiers
Mindat ID:
27388
Long-form identifier:
mindat:1:1:27388:8
GUID
(UUID V4):
(UUID V4):
d19adae8-d099-4f41-8034-adfb3206353f
Classification of Avdoninite
Approved
Approval year:
2005
First published:
2006
3.DA.55
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
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 |
---|---|---|
Avn | 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 Avdoninite
Vitreous
Transparency:
Transparent
Colour:
Green
Streak:
Pale green
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {100}
on {100}
Fracture:
Step-Like
Density:
3.03 g/cm3 (Measured) 3.066 g/cm3 (Calculated)
Optical Data of Avdoninite
Type:
Biaxial
RI values:
nα = 1.669 nβ = 1.688 nγ = 1.707
2V:
Measured: 90°
Max Birefringence:
δ = 0.038
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Chemical Properties of Avdoninite
Formula:
K2Cu5(OH)4Cl8 · H2O
IMA Formula:
K2Cu5Cl8(OH)4 · 2H2O
Crystallography of Avdoninite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 11.592(2) Å, b = 6.5509(11) Å, c = 11.745(2) Å
β = 91.104(6)°
β = 91.104(6)°
Ratio:
a:b:c = 1.77 : 1 : 1.793
Unit Cell V:
891.8 ų
Z:
2
Morphology:
short-prismatic to thick tabular crystals
Comment:
From Pekov et al. (2015).
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
11.63 Å | (100) |
5.80 Å | (27) |
5.88 Å | (20) |
2.518 Å | (19) |
5.73 Å | (7) |
2.321 Å | (17) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
45b : [Other oxidized fumarolic minerals] | |
47a : [Near-surface hydration of prior minerals] | |
47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Avdoninite
General Appearance of Type Material:
Imperfect, short-prismatic, partly flattened crystals up to 0.2 mm in length in aggregates, and in pseudomorphs after melanothallite
Place of Conservation of Type Material:
Mineralogical Museum of the Department of Mineralogy, St. Petersburg State University, St. Petersburg, Russia (catalog no. 19175).
Geological Setting of Type Material:
Volcanic fumarole
Associated Minerals at Type Locality:
Reference:
Chukanov, N.V., Murashko, M.N., Zadov, A.E., Bushmakin, A.F. (2006) Avdoninite, K2Cu5Cl8(OH)4•H2O, a new mineral from volcanic exhalations and from the zone of technogenesis at massive sulphide ore deposits. Proceedings of the Russian Mineralogical Society: 135(3): 38–42.
Synonyms of Avdoninite
Other Language Names for Avdoninite
German:Avdoninit
Common Associates
Associated Minerals Based on Photo Data:
5 photos of Avdoninite associated with Chrysothallite | K6Cu6Tl3+Cl17(OH)4 · H2O |
4 photos of Avdoninite associated with Belloite | Cu(OH)Cl |
Related Minerals - Strunz-mindat Grouping
3.DA. | Centennialite | CaCu3Cl2(OH)6 · nH2O (n ~ 0.7) | Trig. 3m (3 2/m) : P3m1 |
3.DA. | Muonionalustaite | Ni3(OH)4Cl2 · 4H2O | Mon. 2/m : B2/m |
3.DA. | Parahibbingite | Fe2(OH)3Cl | Trig. 3m (3 2/m) : R3m |
3.DA. | Bounahasite | Cu+Cu2+2(OH)3Cl2 | Mon. 2/m |
3.DA.05 | Melanothallite | Cu2Cl2O | Orth. mmm (2/m 2/m 2/m) : Fddd |
3.DA.10a | Atacamite | Cu2(OH)3Cl | Orth. mmm (2/m 2/m 2/m) : Pnma |
3.DA.10b | Botallackite | Cu2(OH)3Cl | Mon. 2/m : P21/m |
3.DA.10b | Clinoatacamite | Cu2(OH)3Cl | Mon. 2/m |
3.DA.10a | Hibbingite | Fe2+2(OH)3Cl | Orth. mmm (2/m 2/m 2/m) : Pnma |
3.DA.10a | Kempite | Mn2+2(OH)3Cl | Orth. mmm (2/m 2/m 2/m) : Pnma |
3.DA.10c | Kuliginite | Fe3Mg(OH)6Cl2 | Trig. 3 : R3 |
3.DA.10c | Paratacamite | Cu3(Cu,Zn)(OH)6Cl2 | Trig. 3 : R3 |
3.DA.10b | Belloite | Cu(OH)Cl | Mon. 2/m : P21/b |
3.DA.10c | Herbertsmithite | Cu3Zn(OH)6Cl2 | Trig. 3m (3 2/m) : R3m |
3.DA.10c | Kapellasite | Cu3Zn(OH)6Cl2 | Trig. 3m (3 2/m) : P3m1 |
3.DA.10c | Gillardite | Cu3Ni(OH)6Cl2 | Trig. 3m (3 2/m) : R3m |
3.DA.10c | Haydeeite | Cu3Mg(OH)6Cl2 | Trig. 3m (3 2/m) : P3m1 |
3.DA.10c | Leverettite | Cu3Co(OH)6Cl2 | Trig. 3 : R3 |
3.DA.10c | Paratacamite-(Ni) | Cu3(Ni,Cu)(OH)6Cl2 | Trig. 3 : R3 |
3.DA.10c | Tondiite | Cu3Mg(OH)6Cl2 | Trig. 3m (3 2/m) : R3m |
3.DA.10c | Misakiite | Cu3Mn(OH)6Cl2 | Trig. 3m (3 2/m) : P3m1 |
3.DA.10b | Iyoite | MnCuCl(OH)3 | Mon. 2/m : P21/m |
3.DA.10b | Unnamed (Cu-Zn Chloride Hydroxide) | CuZnCl(OH)3 | Mon. 2/m : P21/m |
3.DA.15 | Claringbullite | Cu4ClF(OH)6 | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
3.DA.15 | Barlowite | Cu4BrF(OH)6 | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
3.DA.20 | Simonkolleite | Zn5Cl2(OH)8 · H2O | Trig. 3m (3 2/m) : P3m1 |
3.DA.25 | Buttgenbachite | Cu19(NO3)2(OH)32Cl4 · 2H2O | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
3.DA.25 | Connellite | Cu19(SO4)(OH)32Cl4 · 3H2O | Hex. 6 m2 : P62c |
3.DA.30 | Abhurite | Sn21Cl16(OH)14O6 | Trig. 3 2 : R3 2 |
3.DA.35 | Ponomarevite | K4Cu4Cl10O | Mon. 2/m : B2/b |
3.DA.40 | Anthonyite | Cu(OH,Cl)2 · 3H2O | Mon. 2/m |
3.DA.40 | Calumetite | CaCu4(OH)8Cl2 · 3.5H2O | Orth. mmm (2/m 2/m 2/m) : Cmcm |
3.DA.45 | Khaidarkanite | Cu4Al3(OH)14F3 · 2H2O | Mon. 2/m : B2/m |
3.DA.50 | Bobkingite | Cu5Cl2(OH)8 · 2H2O | Mon. 2/m : B2/m |
3.DA.60 | Droninoite | Ni6Fe3+2(OH)16Cl2 · 4H2O | Trig. 3m (3 2/m) : R3m |
3.DA.70 | Chrysothallite | K6Cu6Tl3+Cl17(OH)4 · H2O | Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm |
3.DA.70 | Dioskouriite | CaCu4Cl6(OH)4 · 4H2O | Mon. 2/m : P21/b |
3.DA.75 | Feodosiyite | Cu11Mg2Cl18(OH)8 · 16H2O | Mon. 2/m : P21/b |
3.DA.80 | Romanorlovite | K8Cu6Cl17(OH)3 | Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm |
Other Information
Notes:
It slowly decomposes in cold water and dissolves in dilute HCl with no evolved gases.
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 Avdoninite
mindat.org URL:
https://www.mindat.org/min-27388.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Avdoninite
Reference List:
Localities for Avdoninite
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.
Germany | |
| |
Russia | |
| |
| |
| |
|
Quick NavTopAbout AvdoniniteUnique IdentifiersClassification Mineral SymbolsPhysical Properties Optical Data Chemical Properties Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia