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Nordite-(La)

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Big Photo

Kirovskii apatite mine (Kirovsky Mine; Kirovskii Mine; Kirov Mine), Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Pavel M. Kartashov

Show Nordite-(La) Photos (2)



Formula:
(La,Ce)(Sr,Ca)Na
 
2
(Na,Mn)(Zn,Mg)Si
 
6
O
 
17
Hardness:5 - 6
Member of:Nordite Group


The zinc analogue of Ferronordite-(La). The lanthanum analogue of Nordite-(Ce).

Classification of Nordite-(La)

IMA status:Approved
Strunz 8th edition ID:8/G.03-30
Nickel-Strunz 10th (pending) edition ID:9.DO.15

9 : SILICATES (Germanates)
D : Inosilicates
O : Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains
Dana 8th edition ID:72.5.2.3

72 : PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
5 : Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with corrugated and complex layers
Hey's CIM Ref.:14.8.10

14 : Silicates not Containing Aluminum
8 : Silicates of Group III metals other than Al
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Type Occurrence of Nordite-(La)

Type Locality:Pegmatite No. 65, Chinglusuai River Valley, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Physical Properties of Nordite-(La)

Hardness (Mohs):5 - 6

Optical Data of Nordite-(La)

Type:Biaxial (-)
RI values: nα = 1.619 - 1.620 nβ = 1.630 - 1.640 nγ = 1.642 - 1.644
2V:Measured: 31° to 32°, Calculated: 46° to 90°
Maximum Birefringence:δ = 0.023 - 0.024

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

Chemical Properties of Nordite-(La)

Formula:
(La,Ce)(Sr,Ca)Na
 
2
(Na,Mn)(Zn,Mg)Si
 
6
O
 
17
Essential elements:La, Na, O, Si, Sr, Zn
All elements listed in formula:Ca, Ce, La, Mg, Mn, Na, O, Si, Sr, Zn

Relationship of Nordite-(La) to other Species

Member of:Nordite Group
Other Members of Group:

- +
Ferronordite-(Ce)
Na
 
3
SrCeFe
2+
 
Si
 
6
O
 
17
Ferronordite-(La)
Na
 
3
Sr(La,Ce)FeSi
 
6
O
 
17
Manganonordite-(Ce)
Na
 
3
SrCeMn
2+
 
Si
 
6
O
 
17
Nordite-(Ce)
(Ce,La)(Sr,Ca)Na
 
2
(Na,Mn)(Zn,Mg)Si
 
6
O
 
17
Related Minerals - Nickel-Strunz Grouping):

- +
9.DO.05Pyroxferroite
(Fe,Mn,Ca)SiO
 
3
9.DO.05Pyroxmangite
MnSiO
 
3
9.DO.10Pellyite
Ba
 
2
Ca(Fe,Mg)
 
2
Si
 
6
O
 
17
9.DO.15Nordite-(Ce)
(Ce,La)(Sr,Ca)Na
 
2
(Na,Mn)(Zn,Mg)Si
 
6
O
 
17
9.DO.15Ferronordite-(Ce)
Na
 
3
SrCeFe
2+
 
Si
 
6
O
 
17
9.DO.15Manganonordite-(Ce)
Na
 
3
SrCeMn
2+
 
Si
 
6
O
 
17
9.DO.15Ferronordite-(La)
Na
 
3
Sr(La,Ce)FeSi
 
6
O
 
17
9.DO.20Alamosite
Pb
 
12
[Si
 
12
O
 
36
]
9.DO.25Liebauite
Ca
 
3
Cu
 
5
Si
 
9
O
 
26
Related Minerals - Hey's Index Grouping:

- +
14.8.1Thalénite-(Y)
Y
 
3
(Si
 
3
O
 
10
)(OH)
14.8.2Keiviite-(Y)
(Y,Yb)
 
2
[Si
 
2
O
 
7
]
14.8.3Keiviite-(Yb)
(Yb,Y)
 
2
Si
 
2
O
 
7
14.8.4Tombarthite-(Y)
Y
 
4
(Si,H
 
4
)
 
4
O
 
12-x
(OH)
 
4+2x
14.8.5Thortveitite
(Sc,Y)
 
2
Si
 
2
O
 
7
14.8.6Sazhinite-(Ce)
Na
 
3
Ce[Si
 
6
O
 
15
] · 6H
 
2
O
14.8.7Monteregianite-(Y)
(Na,K)
 
6
(Y,Ca)
 
2
Si
 
16
O
 
38
 · 10H
 
2
O
14.8.8Iraqite-(La)
K(Ca,Na)
 
2
(La,Ce,Th)[(Si,Al)
 
8
O
 
20
]
14.8.9Ashcroftine-(Y)
K
 
5
Na
 
5
(Y,Ca)
 
12
Si
 
28
O
 
70
(OH)
 
2
(CO
 
3
)
 
8
 · 8H
 
2
O
14.8.11Nordite-(Ce)
(Ce,La)(Sr,Ca)Na
 
2
(Na,Mn)(Zn,Mg)Si
 
6
O
 
17
14.8.12Jervisite
(Na,Ca,Fe
2+
 
)(Sc,Mg,Fe
2+
 
)Si
 
2
O
 
6
14.8.13Cerite-(Ce)
(Ce,Ca)
 
9
(Mg,Fe)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
14.8.14Cascandite
Ca(Sc,Fe
3+
 
)(HSi
 
3
O
 
9
)

Other Names for Nordite-(La)

Other Languages:
Russian:Нордит-(La)

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 Nordite-(La)

Reference List:

- +
American Mineralogist (1943): 28: 282..

American Mineralogist (1970): 55: 1167-1181.

Internet Links for Nordite-(La)

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    • Localities for Nordite-(La)

    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.
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    (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.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
            • Eveslogchorr Mt
    		I.V. Pekov data
    Pavel M. Kartashov data
          • Lovozero Massif
            • Chinglusuai River Valley
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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