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Komkovite

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Formula:
BaZr[Si3O9] · 3H2O
System:
Trigonal
Hardness:
3 - 4
This page provides mineralogical data about Komkovite.

Classification of Komkovite

Approved
9.DM.10

9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains
59.2.4.1

59 : CYCLOSILICATES Three-Membered Rings
2 : Three-Membered Rings, hydrated
14.10.31

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
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First Recorded Occurrence of Komkovite

Year of Discovery:
1990

Physical Properties of Komkovite

Hardness (Mohs):
3 - 4

Crystallography of Komkovite

Crystal System:
Trigonal
Cell Parameters:
a = 10.52Å, c = 15.73Å
Ratio:
a:c = 1 : 1.495
Unit Cell Volume:
V 1,507.62 ų (Calculated from Unit Cell)

Optical Data of Komkovite

Type:
Uniaxial (-)
RI values:
nω = 1.671 nε = 1.644
Max Birefringence:
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of Komkovite

Formula:
BaZr[Si3O9] · 3H2O
Essential elements:
All elements listed in formula:
Common Impurities:
Hf,Fe,Ca,K

Relationship of Komkovite to other Species

9.DM.05StokesiteCaSn[Si3O9] · 2H2O
9.DM.10CalciohilairiteCaZr[SiO3]3 · 3H2O
9.DM.10HilairiteNa2Zr[SiO3]3 · 3H2O
9.DM.10Sazykinaite-(Y)Na5YZr[SiO3]6 · 6H2O
9.DM.10Pyatenkoite-(Y)Na5YTi[SiO3]6 · 6H2O
9.DM.15GaidonnayiteNa2Zr(Si3O9) · 2H2O
9.DM.15GeorgechaoiteNaKZr[Si3O9] · 2H2O
9.DM.20ChkaloviteNa2BeSi2O6
9.DM.25VlasoviteNa2ZrSi4O11
9.DM.30RevditeNa16Si16O27(OH)26 · 28H2O
9.DM.35ScheuchzeriteNa(Mn,Mg,Zn)9[VSi9O28(OH)](OH)3
9.DM.40TerskiteNa4ZrSi6O16 · 2H2O
14.10.1ZirconZrSiO4
14.10.2HafnonHfSiO4
14.10.3ZektzeriteLiNa(Zr,Ti,Hf)Si6O15
14.10.4ParakeldyshiteNa2ZrSi2O7
14.10.5VlasoviteNa2ZrSi4O11
14.10.6Keldyshite(Na,H)2ZrSi2O7
14.10.7GaidonnayiteNa2Zr(Si3O9) · 2H2O
14.10.8TerskiteNa4ZrSi6O16 · 2H2O
14.10.9ElpiditeNa2ZrSi6O15 · 3H2O
14.10.10HilairiteNa2Zr[SiO3]3 · 3H2O
14.10.11PetarasiteNa5Zr2(Si6O18)(Cl,OH) · 2H2O
14.10.12KhibinskiteK2ZrSi2O7
14.10.13WadeiteK2Zr(Si3O9)
14.10.14DalyiteK2ZrSi6O15
14.10.15KostyleviteK2Zr(Si3O9) · H2O
14.10.16UmbiteK2(Zr,Ti)Si3O9 · H2O
14.10.17ParaumbiteK3Zr2H(Si3O9)2 · nH2O
14.10.18GeorgechaoiteNaKZr[Si3O9] · 2H2O
14.10.19GittinsiteCaZrSi2O7
14.10.20CalciocatapleiiteCaZr(Si3O9) · 2H2O
14.10.21CalciohilairiteCaZr[SiO3]3 · 3H2O
14.10.22ArmstrongiteCaZr[Si6O15] · 3H2O
14.10.23Lemoynite(Na,K)2CaZr2Si10O26 · 5H2O
14.10.24CatapleiiteNa2Zr(Si3O9) · 2H2O
14.10.25BaghdaditeCa3(Zr,Ti)(Si2O7)O2
14.10.26LovozeriteNa2Ca(Zr,Ti)(Si6O12)[(OH)4O2] · H2O
14.10.27Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2
14.10.28PenkvilksiteNa4Ti2Si8O22 · 4H2O
14.10.29DarapiositeKNa2(Zn,Li)3(Mn,Zr)2[Si12O30]
14.10.30BaziriteBaZr(Si3O9)
14.10.32ZirsinaliteNa6(Ca,Mn2+,Fe2+)Zr(Si6O18)
14.10.33Tranquillityite(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O4

Other Names for Komkovite

Name in Other Languages:
German:Komkovit
Spanish:Komkovita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Komkovite

Reference List:
American Mineralogist (1991): 77: 207-208.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1993): 122: 76.

New Minerals (1997), New Minerals 1990-1994.

Mineralogicheskii Zhurnal: 12(3): 69-73.

Doklady Akademii Nauk SSSR: 320(6): 1384-1388.

Internet Links for Komkovite

Localities for Komkovite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Northern Karelia
Mineral. Zhurnal (1990) 12 (3), 69-73 ; Amer. Mineral. (1992) 77, 207-208; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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