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Seidite-(Ce)

Big Photo

Yubileinaya (Yubileinoye; Jubilejnaja) pegmatite, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© L Kruszewski

Show Seidite-(Ce) Photos (4)
Formula:
Na
 
4
(Ce,Sr)
 
2
Ti[(O,OH,F)
 
5
|Si
 
8
O
 
18
(OH)]·5H
 
2
O
System:MonoclinicColour:Bright yellow, pinkish ...
Lustre:VitreousHardness:3 - 4
Name:Named after Seidozero, literally Lake Seid, the central lake in the Lovozero complex.
This page provides mineralogical data about Seidite-(Ce).

Classification of Seidite-(Ce)

IMA status:Approved 1993
Strunz 8th edition ID:8/H.38-55
Nickel-Strunz 10th (pending) edition ID:9.DJ.20

9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
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Type Occurrence of Seidite-(Ce)

Type Locality:Yubileinaya (Yubileinoye; Jubilejnaja) pegmatite, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Physical Properties of Seidite-(Ce)

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:Bright yellow, pinkish yellow, creamy-white
Hardness (Mohs):3 - 4

Crystallography of Seidite-(Ce)

Crystal System:Monoclinic

Optical Data of Seidite-(Ce)

Type:Biaxial (-)
RI values: nα = 1.542 nβ = 1.569 nγ = 1.571
Maximum Birefringence:δ = 0.029

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

Chemical Properties of Seidite-(Ce)

Formula:
Na
 
4
(Ce,Sr)
 
2
Ti[(O,OH,F)
 
5
|Si
 
8
O
 
18
(OH)]·5H
 
2
O
Essential elements:Ce, F, H, Na, O, Si, Sr, Ti
All elements listed in formula:Ce, F, H, Na, O, Si, Sr, Ti

Relationship of Seidite-(Ce) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DJ.05Narsarsukite
Na
 
2
(Ti,Fe)Si
 
4
(O,F)
 
11
9.DJ.10Laplandite-(Ce)
Na
 
4
CeTiPO
 
4
Si
 
7
O
 
18
·5H
 
2
O
9.DJ.15Caysichite-(Y)
Ca
 
2
Y
 
2
Si
 
4
O
 
10
(CO
 
3
)
 
3
·4H
 
2
O
9.DJ.25Carlosturanite
(Mg,Fe,Ti)
 
21
(Si,Al)
 
12
O
 
28
(OH)
 
34
9.DJ.30Jonesite
Ba
 
4
(K,Na)
 
2
Ti
 
4
Al
 
2
[O|(SiO
 
4
)
 
2
|Si
 
3
O
 
9
]
 
2
 · 6H
 
2
O

Other Names for Seidite-(Ce)

Synonyms:
IMA1993-029
Other Languages:
German:Seidit-(Ce)
Russian:Сейдит-(Ce)

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 Seidite-(Ce)

Reference List:Ferraris, G., et al. (2003): Canadian Mineralogist: 41: 1183-1192.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 127(4): 94-100.

American Mineralogist (2000): 85: 627.

Internet Links for Seidite-(Ce)

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    Localities for Seidite-(Ce)

    (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
    		www.koeln.netsurf.de/~w.steffens/khib.htm
          • Lovozero Massif
            • Karnasurt Mt
    		Mineralogical Record (2000): 31: 203.
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 13th Nov 2009 05:26:36