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Avdoninite

A valid IMA mineral species
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About AvdoniniteHide

03386410016389252018253.jpg
Vladimir N. Avdonin
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).


Unique IdentifiersHide

Mindat ID:
27388
Long-form identifier:
mindat:1:1:27388:8
GUID
(UUID V4):
d19adae8-d099-4f41-8034-adfb3206353f

Classification of AvdoniniteHide

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
AvnIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of AvdoniniteHide

Vitreous
Transparency:
Transparent
Colour:
Green
Streak:
Pale green
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
on {100}
Fracture:
Step-Like
Density:
3.03 g/cm3 (Measured)    3.066 g/cm3 (Calculated)

Optical Data of AvdoniniteHide

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.
Surface Relief:
High

Chemical Properties of AvdoniniteHide

Formula:
K2Cu5(OH)4Cl8 · H2O
IMA Formula:
K2Cu5Cl8(OH)4 · 2H2O

Crystallography of AvdoniniteHide

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)°
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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

Type Occurrence of AvdoniniteHide

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 AvdoniniteHide

Other Language Names for AvdoniniteHide

German:Avdoninit

Common AssociatesHide

Associated Minerals Based on Photo Data:
5 photos of Avdoninite associated with ChrysothalliteK6Cu6Tl3+Cl17(OH)4 · H2O
4 photos of Avdoninite associated with BelloiteCu(OH)Cl

Related Minerals - Strunz-mindat GroupingHide

3.DA.CentennialiteCaCu3Cl2(OH)6 · nH2O (n ~ 0.7)Trig. 3m (3 2/m) : P3m1
3.DA.MuonionalustaiteNi3(OH)4Cl2 · 4H2OMon. 2/m : B2/m
3.DA.ParahibbingiteFe2(OH)3ClTrig. 3m (3 2/m) : R3m
3.DA.BounahasiteCu+Cu2+2(OH)3Cl2Mon. 2/m
3.DA.05MelanothalliteCu2Cl2OOrth. mmm (2/m 2/m 2/m) : Fddd
3.DA.10aAtacamiteCu2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10bBotallackiteCu2(OH)3ClMon. 2/m : P21/m
3.DA.10bClinoatacamiteCu2(OH)3ClMon. 2/m
3.DA.10aHibbingiteFe2+2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10aKempiteMn2+2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10cKuliginiteFe3Mg(OH)6Cl2Trig. 3 : R3
3.DA.10cParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3 : R3
3.DA.10bBelloiteCu(OH)ClMon. 2/m : P21/b
3.DA.10cHerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cKapellasiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.10cGillarditeCu3Ni(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cHaydeeiteCu3Mg(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.10cLeverettiteCu3Co(OH)6Cl2Trig. 3 : R3
3.DA.10cParatacamite-(Ni)Cu3(Ni,Cu)(OH)6Cl2Trig. 3 : R3
3.DA.10cTondiiteCu3Mg(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cMisakiiteCu3Mn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.10bIyoiteMnCuCl(OH)3Mon. 2/m : P21/m
3.DA.10bUnnamed (Cu-Zn Chloride Hydroxide)CuZnCl(OH)3Mon. 2/m : P21/m
3.DA.15ClaringbulliteCu4ClF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.15BarlowiteCu4BrF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.20SimonkolleiteZn5Cl2(OH)8 · H2OTrig. 3m (3 2/m) : P3m1
3.DA.25ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.25ConnelliteCu19(SO4)(OH)32Cl4 · 3H2OHex. 6 m2 : P62c
3.DA.30AbhuriteSn21Cl16(OH)14O6Trig. 3 2 : R3 2
3.DA.35PonomareviteK4Cu4Cl10OMon. 2/m : B2/b
3.DA.40AnthonyiteCu(OH,Cl)2 · 3H2OMon. 2/m
3.DA.40CalumetiteCaCu4(OH)8Cl2 · 3.5H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
3.DA.45KhaidarkaniteCu4Al3(OH)14F3 · 2H2OMon. 2/m : B2/m
3.DA.50BobkingiteCu5Cl2(OH)8 · 2H2OMon. 2/m : B2/m
3.DA.60DroninoiteNi6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
3.DA.70ChrysothalliteK6Cu6Tl3+Cl17(OH)4 · H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.DA.70DioskouriiteCaCu4Cl6(OH)4 · 4H2OMon. 2/m : P21/b
3.DA.75FeodosiyiteCu11Mg2Cl18(OH)8 · 16H2OMon. 2/m : P21/b
3.DA.80RomanorloviteK8Cu6Cl17(OH)3Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm

Other InformationHide

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 AvdoniniteHide

References for AvdoniniteHide

Reference List:

Localities for AvdoniniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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.
Germany
 
  • Saxony-Anhalt
    • Bernburg
Russia
 
  • Kamchatka Krai
    • Milkovsky District
      • Tolbachik Volcanic field
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
  • Orenburg Oblast
    • Mednogorsk District
      • Sakmara Zone
  • Sverdlovsk Oblast
 
Mineral and/or Locality  
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