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Zýkaite

A valid IMA mineral species
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08193980014977499628846.jpg
Zýkaite

Wilhelm Mine, Stara Góra deposit, Radzimowice, Gmina Bolków, Jawor County, Lower Silesian Voivodeship, Poland
03618510017056980055145.jpg
Zýkaite

Reiche Zeche-Schacht, Himmelfahrt Mine, Freiberg, Mittelsachsen, Saxony, Germany
01504560017057872633024.jpg
Zýkaite

Christbescherung Mine, Großvoigtsberg, Großschirma, Mittelsachsen, Saxony, Germany
00664900014947460033855.jpg
Zýkaite

Wilhelm Mine, Stara Góra deposit, Radzimowice, Gmina Bolków, Jawor County, Lower Silesian Voivodeship, Poland
07592780017056220106744.jpg
Zýkaite

Reiche Zeche-Schacht, Himmelfahrt Mine, Freiberg, Mittelsachsen, Saxony, Germany
09035180017056163826948.jpg
Zýkaite

Christbescherung Mine, Großvoigtsberg, Großschirma, Mittelsachsen, Saxony, Germany
00664900014947460033855.jpg
Zýkaite

Wilhelm Mine, Stara Góra deposit, Radzimowice, Gmina Bolków, Jawor County, Lower Silesian Voivodeship, Poland
03618510017056980055145.jpg
Zýkaite

Reiche Zeche-Schacht, Himmelfahrt Mine, Freiberg, Mittelsachsen, Saxony, Germany
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About ZýkaiteHide

03985010015343691808623.jpg
Václav Zýka
Formula:
Fe3+4(AsO4)3(SO4)(OH) · 15H2O
Colour:
Greyish white, light yellow, light green
Lustre:
Dull
Hardness:
2
Specific Gravity:
2.50
Crystal System:
Orthorhombic
Name:
Named after Dr. Václav Zýka (1926 – 1990), Director, Institute of Raw Materials, Kutná Hora, Czech Republic.
Sanjuanite-Destinezite Group.

Chemically related to Bukovskýite.


Unique IdentifiersHide

Mindat ID:
4437
Long-form identifier:
mindat:1:1:4437:6
GUID
(UUID V4):
a465fabe-e1ff-40f2-9ab9-ea1ad192b3ab

IMA Classification of ZýkaiteHide

Classification of ZýkaiteHide

Strunz-mindat (2024):
8.DB.45

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
B : With only medium-sized cations, (OH, etc.):RO4< 1:1
Dana 8th ed.:
43.5.3.2

43 : COMPOUND PHOSPHATES, ETC.
5 : Hydrated Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Hey's CIM Ref.:
22.3.28

22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates

Mineral SymbolsHide

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

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

Physical Properties of ZýkaiteHide

Lustre:
Dull
Colour:
Greyish white, light yellow, light green
Streak:
Pale yellowish
Hardness:
2 on Mohs scale
Tenacity:
Waxy
Fracture:
Irregular/Uneven
Density:
2.50 g/cm3 (Measured)    2.504 g/cm3 (Calculated)

Optical Data of ZýkaiteHide

Type:
Biaxial (-)
RI values:
nα = 1.632 nβ = 1.635 - 1.636 nγ = 1.646
2V:
Measured: 60° , Calculated: 56° to 66°
Max Birefringence:
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak to distinct

Chemistry of ZýkaiteHide

Mindat Formula:
Fe3+4(AsO4)3(SO4)(OH) · 15H2O
Elements listed:
As, Fe, H, O, S - search for minerals with similar chemistry

Crystallography of ZýkaiteHide

Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P2 2 2
Cell Parameters:
a = 20.853(20) Å, b = 7.033(4) Å, c = 36.991(23) Å
Ratio:
a:b:c = 2.965 : 1 : 5.26
Unit Cell V:
5,425.07 ų (Calculated from Unit Cell)
Z:
8

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.6 Å(7)
10.4 Å(10)
6.92 Å(4)
5.610 Å(4)
3.812 Å(4)
3.516 Å(3)
2.831 Å(4)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47b : [Sulfates and sulfites]
47d : [Arsenates, antimonates, selenates, bismuthinates]
Stage 10b: Anthropogenic minerals<10 Ka
55 : Anthropogenic mine minerals

Type Occurrence of ZýkaiteHide

Type Locality:
ⓘ Šafary Mine, Kaňk, Kutná Hora, Kutná Hora District, Central Bohemian Region, Czech Republic
Place of Conservation of Type Material:
Charles University, Prague, Czech Republic, 20558.
National School of Mines, Paris, France.
National Museum of Natural History, Washington, D.C., USA, 144940, 144941.
Geological Setting of Type Material:
alteration product of arsenopyrite and pyrite
Associated Minerals at Type Locality:
ScoroditeQuartzPitticiteLimoniteKaňkite
GypsumArsenopyrite
Reference:
Cech, F., Praha, J., Novak, F. (1978) Zýkaite, Fe43+ (AsO4)3(SO4)(OH)·15H2O, a new mineral. Neues Jahrbuch für Mineralogie, Monatshefte: 1978: 134-144.

Synonyms of ZýkaiteHide

Other Language Names for ZýkaiteHide

German:Zykait
Spanish:Zykaita

Relationship of Zýkaite to other SpeciesHide

Member of:
Sanjuanite-Destinezite Group
Other Members of this group:
DestineziteFe3+2(PO4)(SO4)(OH) · 6H2OTric. 1 : P1
SanjuaniteAl2(PO4)(SO4)(OH) · 9H2OTric.
SarmientiteFe3+2(AsO4)(SO4)(OH) · 5H2OMon. 2/m : P21/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Zýkaite associated with KaňkiteFeAsO4 · 3.5H2O
2 photos of Zýkaite associated with BukovskýiteFe3+2(AsO4)(SO4)(OH) · 9H2O
1 photo of Zýkaite associated with ArsenopyriteFeAsS

Related Minerals - Strunz-mindat GroupingHide

8.DB.ArangasiteAl2F(PO4)(SO4) · 9H2O Mon. 2/m : P2/b
8.DB.Camaronesite[Fe3+(H2O)2(PO3OH)]2(SO4) · 1-2H2OTrig. 3 2 : R3 2
8.DB.HösliteFe3+3(VO4)2(SO4)(OH)(H2O)4 · 3H2OMon. 2/m : P21/b
8.DB.05DiadochiteFe3+2(PO4)(SO4)(OH) · 6H2OAmor.
8.DB.05Pitticite(Fe, AsO4, H2O) (?)Amor.
8.DB.05DestineziteFe3+2(PO4)(SO4)(OH) · 6H2OTric. 1 : P1
8.DB.07WilhelmgümbeliteZnFe2+Fe3+3(PO4)3(OH)4(H2O)5 · 2H2OOrth. mmm (2/m 2/m 2/m)
8.DB.07Schmidite[Zn2(Fe3+,Mn2+)2Fe3+(PO4)3(OH)3(H2O)6] · 2H2OOrth.
8.DB.07WildenaueriteZn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbam
8.DB.10VashegyiteAl11(PO4)9(OH)6 · 38H2OOrth. mmm (2/m 2/m 2/m)
8.DB.15SchooneriteZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2OOrth. mmm (2/m 2/m 2/m) : Pbam
8.DB.20SinkankasiteMn2+Al(PO3OH)2(OH) · 6H2OTric. 1 : P1
8.DB.25MitryaevaiteAl6(PO4)((P,S)O3(OH,O))2F2(OH)2 · 14.5H2OTric. 1 : P1
8.DB.30SanjuaniteAl2(PO4)(SO4)(OH) · 9H2OTric.
8.DB.35SarmientiteFe3+2(AsO4)(SO4)(OH) · 5H2OMon. 2/m : P21/b
8.DB.40BukovskýiteFe3+2(AsO4)(SO4)(OH) · 9H2OTric. 1 : P1
8.DB.40FlurliteZn3Mn2+Fe3+(PO4)3(OH)2 · 9H2OMon. 2/m : P21/m
8.DB.40ManganflurliteZnMn2+3Fe3+(PO4)3(OH)2(H2O)7 · 2H2OMon. 2/m : P21/m
8.DB.42BohuslaviteFe3+4(PO4)3(SO4)(OH) · nH2OTric. 1 : P1
8.DB.47LapeyreiteCu3O[AsO3(OH)]2 · 0.75H2OMon. 2/m : B2/m
8.DB.50GiniiteFe2+Fe3+4(PO4)3(OH)5 · 2H2OMon. 2/m : P2/b
8.DB.50RossiantoniteAl3(PO4)(SO4)2(OH)2(H2O)14Tric. 1 : P1
8.DB.52ArctowskiteAl9(PO4)8(OH)3 · 27H2OOrth.
8.DB.55Sasaite(Al,Fe3+)14(PO4)11(SO4)(OH)7 · 83H2OOrth.
8.DB.60McauslaniteFe3Al2(PO4)3(PO3OH)F · 18H2OTric.
8.DB.65GoldquarryiteCuCd2Al3(PO4)4F2(H2O,F)2 · 10H2OTric. 1 : P1
8.DB.70BirchiteCd2Cu2(PO4)2(SO4) · 5H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.DB.75BraithwaiteiteNaCu5(Ti4+Sb5+)(AsO4)4(HAsO4)2O2 · 8H2OTric. 1 : P1

Other InformationHide

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 ZýkaiteHide

References for ZýkaiteHide

Localities for ZýkaiteHide

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.
Austria
 
  • Carinthia
    • Spittal an der Drau District
      • Heiligenblut am Großglockner
Auer (2023)
Czech Republic
 
  • Central Bohemian Region
    • Kutná Hora District
      • Kutná Hora
www.mindat.org (2022)
Čech et al. (1978)
  • Karlovy Vary Region
    • Karlovy Vary District
Lapis 2002 (7/8)
Germany
 
  • Saxony
    • Meissen
      • Klipphausen
www.mineralienatlas.de (n.d.)
    • Mittelsachsen
      • Brand-Erbisdorf
        • Vereinigt Feld Mine
T. Witzke & M. Hocker (1993)
      • Freiberg
        • Himmelfahrt Mine
Witzke (2023)
        • Zug
90. +1 other reference
      • Großschirma
        • Großvoigtsberg
T. Witzke & M. Hocker (1993)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
Rieck et al. (2018)
New Zealand
 
  • Otago Region
    • Queenstown-Lakes District
      • Skippers
Haffert et al. (2010)
Poland
 
  • Lower Silesian Voivodeship
    • Jawor County
      • Gmina Bolków
        • Radzimowice
          • Stara Góra deposit
Siuda (2004)
Russia
 
  • Republic of Karelia
    • Pryazhinsky District
Ivashchenko et al. (2018, June)
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