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Spodiophyllite

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Formula:
(Na,K)
 
4
(Mg,Fe
2+
 
)
 
3
(Fe
3+
 
,Al)
 
2
(Si
 
8
O
 
24
)
Lustre:PearlyHardness:3 - 3½


Originally reported from Narssârssuk pegmatite (Narsarsuk pegmatite), Narssârssuk (Narsarsuk), Igaliku (Igaliko), Narsaq, Kitaa (West Greenland) Province, Greenland.

Classification of Spodiophyllite

IMA status:Discredited 1998
Explanation of status:Possibly a mica related to tainiolite; discredited by Mica Subcommittee (1998)
Strunz 8th edition ID:8/H.29-20

8 : Silicates
H : Phyllosilicates (layered), Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others
29 : Naujakasite - Spodiophyllite series
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Physical Properties of Spodiophyllite

Lustre:Pearly
Hardness (Mohs):3 - 3½

Chemical Properties of Spodiophyllite

Formula:
(Na,K)
 
4
(Mg,Fe
2+
 
)
 
3
(Fe
3+
 
,Al)
 
2
(Si
 
8
O
 
24
)
Simplified for copy/paste:(Na,K)4(Mg,Fe2+)3(Fe3+,Al)2(Si8O24)
Essential elements:Fe, Mg, Na, O, Si
All elements listed in formula:Al, Fe, K, Mg, Na, O, Si

Relationship of Spodiophyllite to other Species

Related Minerals - Strunz Grouping):

- +
8/H.29-10Naujakasite
(Na,K)
 
6
(Fe
2+
 
,Mn
2+
 
,Ca)(Al,Fe)
 
4
Si
 
8
O
 
26

Other Names for Spodiophyllite

Other Languages:
German:Spodiophyllit
Spanish:Spodiophyllita

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 Spodiophyllite

Reference List:

- +
Discreditation: Canad.Mineral. (1998) 36, 905

Internet Links for Spodiophyllite

Search Engines:
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  • Localities for Spodiophyllite

    (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.
    Greenland
     
    • Kitaa Province (West Greenland)
      • Narsaq
        • Igaliku (Igaliko)
          • Narssârssuk (Narsarsuk)
    Petersen Ole V.,Secher K.(1985) - Gronland: Mineralien, Geologie, Geschichte. - Verlag Bode & Partner K.G., Bochum, 87 pagg.; Lapis (1992) 7, pp. 76
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    www.koeln.netsurf.de/~w.steffens/khib.htm
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