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Khibinskite

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Formula:
K
 
2
ZrSi
 
2
O
 
7
System:MonoclinicHardness:4½ - 5½
This page provides mineralogical data about Khibinskite.

Classification of Khibinskite

IMA status:Approved
Strunz 8th edition ID:8/C.04-30
Nickel-Strunz 10th (pending) edition ID:9.BC.10

9 : SILICATES (Germanates)
B : Sorosilicates
C : Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination
Dana 8th edition ID:55.2.2.2

55 : SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
2 : Si2O7 Groups, Generally with no Additional Anions with cations in [6] coordination
Hey's CIM Ref.:14.10.12

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
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Type Occurrence of Khibinskite

Type Locality:Hackman Valley, Yukspor Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Year of Discovery:1974

Physical Properties of Khibinskite

Hardness (Mohs):4½ - 5½

Crystallography of Khibinskite

Crystal System:Monoclinic
Cell Parameters:a = 19.22Å, b = 11.1Å, c = 14.1Å
β = 116.5°
Ratio:a:b:c = 1.732 : 1 : 1.27
Unit Cell Volume:V 2,692.07 ų (Calculated from Unit Cell)

Optical Data of Khibinskite

Type:Biaxial (-)
RI values: nα = 1.665 nβ = 1.715 nγ = 1.715
2V:Measured: 6° to 16°
Maximum Birefringence:δ = 0.050

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:strong

Chemical Properties of Khibinskite

Formula:
K
 
2
ZrSi
 
2
O
 
7
Essential elements:K, O, Si, Zr
All elements listed in formula:K, O, Si, Zr
Common Impurities:Ti,Ca

Relationship of Khibinskite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.BC.05Gittinsite
CaZrSi
 
2
O
 
7
9.BC.05Keiviite-(Y)
(Y,Yb)
 
2
[Si
 
2
O
 
7
]
9.BC.05Keiviite-(Yb)
(Yb,Y)
 
2
Si
 
2
O
 
7
9.BC.05Thortveitite
(Sc,Y)
 
2
Si
 
2
O
 
7
9.BC.05Yttrialite-(Y)
(Y,Th)
 
2
Si
 
2
O
 
7
9.BC.10Keldyshite
(Na,H)
 
2
ZrSi
 
2
O
 
7
9.BC.10Parakeldyshite
Na
 
2
ZrSi
 
2
O
 
7
9.BC.15Rankinite
Ca
 
3
Si
 
2
O
 
7
9.BC.20Barysilite
Pb
 
8
Mn
2+
 
[Si
 
2
O
 
7
]
 
3
9.BC.25Edgarbaileyite
(Hg-Hg)
 
3
Si
 
2
O
 
7
9.BC.30Kristiansenite
Ca
 
2
ScSn(Si
 
2
O
 
7
)(Si
 
2
O
 
6
OH)
9.BC.35Percleveite-(Ce)
(Ce,La,Nd)
 
2
Si
 
2
O
 
7
Related Minerals - Hey's Index Grouping:

- +
14.10.1Zircon
ZrSiO
 
4
14.10.2Hafnon
HfSiO
 
4
14.10.3Zektzerite
LiNa(Zr,Ti,Hf)Si
 
6
O
 
15
14.10.4Parakeldyshite
Na
 
2
ZrSi
 
2
O
 
7
14.10.5Vlasovite
Na
 
2
ZrSi
 
4
O
 
11
14.10.6Keldyshite
(Na,H)
 
2
ZrSi
 
2
O
 
7
14.10.7Gaidonnayite
Na
 
2
Zr(Si
 
3
O
 
9
) · 2H
 
2
O
14.10.8Terskite
Na
 
4
ZrSi
 
6
O
 
16
 · 2H
 
2
O
14.10.9Elpidite
Na
 
2
ZrSi
 
6
O
 
15
 · 3H
 
2
O
14.10.10Hilairite
Na
 
2
Zr[SiO
 
3
]
 
3
 · 3H
 
2
O
14.10.11Petarasite
Na
 
5
Zr
 
2
(Si
 
6
O
 
18
)(Cl,OH) · 2H
 
2
O
14.10.13Wadeite
K
 
2
Zr(Si
 
3
O
 
9
)
14.10.14Dalyite
K
 
2
ZrSi
 
6
O
 
15
14.10.15Kostylevite
K
 
2
Zr(Si
 
3
O
 
9
) · H
 
2
O
14.10.16Umbite
K
 
2
(Zr,Ti)Si
 
3
O
 
9
 · H
 
2
O
14.10.17Paraumbite
K
 
3
Zr
 
2
H(Si
 
3
O
 
9
)
 
2
 · nH
 
2
O
14.10.18Georgechaoite
NaKZr[Si
 
3
O
 
9
] · 2H
 
2
O
14.10.19Gittinsite
CaZrSi
 
2
O
 
7
14.10.20Calciocatapleiite
CaZr(Si
 
3
O
 
9
) · 2H
 
2
O
14.10.21Calciohilairite
CaZr[SiO
 
3
]
 
3
 · 3H
 
2
O
14.10.22Armstrongite
CaZr[Si
 
6
O
 
15
] · 3H
 
2
O
14.10.23Lemoynite
(Na,K)
 
2
CaZr
 
2
Si
 
10
O
 
26
 · 5H
 
2
O
14.10.24Catapleiite
Na
 
2
Zr(Si
 
3
O
 
9
) · 2H
 
2
O
14.10.25Baghdadite
Ca
 
3
(Zr,Ti)(Si
 
2
O
 
7
)O
 
2
14.10.26Lovozerite
Na
 
2
CaZr(H
 
4
Si
 
6
O
 
18
) · H
 
2
O
14.10.27Låvenite
(Na,Ca)
 
2
(Mn
2+
 
,Fe
2+
 
)(Zr,Ti)(Si
 
2
O
 
7
)(O,OH,F)
 
2
14.10.28Penkvilksite
Na
 
4
Ti
 
2
Si
 
8
O
 
22
 · 4H
 
2
O
14.10.29Darapiosite
KNa
 
2
(Zn,Li)
 
3
(Mn,Zr)
 
2
[Si
 
12
O
 
30
]
14.10.30Bazirite
BaZr(Si
 
3
O
 
9
)
14.10.31Komkovite
BaZr[Si
 
3
O
 
9
] · 3H
 
2
O
14.10.32Zirsinalite
Na
 
6
(Ca,Mn
2+
 
,Fe
2+
 
)Zr(Si
 
6
O
 
18
)
14.10.33Tranquillityite
(Fe
2+
 
,Ca)
 
8
(Zr,Y)
 
2
Ti
 
3
(SiO
 
4
)
 
3
O
 
4

Other Names for Khibinskite

Synonyms:
IMA1973-014
Other Languages:
German:Khibinskit
Russian:Хибинскит
Spanish:Khibinskita

Other Information

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

References for Khibinskite

Reference List:

- +
American Mineralogist (1974): 59: 1140.

American Mineralogist (1975): 60: 340.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 103: 110-116.

Doklady Akademii Nauk SSSR: 231: 1351-1353.

Soviet Physics – Doklady: 21: 696-697.

Internet Links for Khibinskite

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    • Localities for Khibinskite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Canada
     
    • Northwest Territories
    Italy
     
    • Latium
      • Rieti Province
        • Rieti
          • Santa Rufina
    		F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402.
    • Umbria
      • Terni Province
        • Marsciano
          • San Venanzo
    		Stoppa, F., Sharygin, V.V., and Cundari, A. (1997): Mineralogy and Petrology 61, 27-45.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    [World of Stones 95:5-6, p64]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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