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Pumpellyite Group

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Centennial Mine, Centennial, Houghton Co., Michigan, USA
© SMS 2008

Show Pumpellyite Group Photos (2)


A group of Ca-M-alumosilicates where M = Fe, Mn, Mg.

Classification of Pumpellyite Group

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Relationship of Pumpellyite Group to other Species

Minerals in Group:
Julgoldite-(Fe2+):
Ca
 
2
(Fe
2+
 
,Mg)(Fe
3+
 
,Al)
 
2
[(OH)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
Julgoldite-(Fe3+):
Ca
 
2
(Fe
3+
 
,Mg)(Fe
3+
 
,Al)
 
2
[(OH,O)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
Okhotskite:
Ca
 
8
(Mn
2+
 
,Mg)
 
4
(Mn
3+
 
,Al,Fe)
 
8
Si
 
12
O
 
56-n
(OH)
 
n
Poppiite:
Ca
 
2
(V
3+
 
,Fe
3+
 
,Mg)(V
3+
 
,Al)
 
2
[(OH,O)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
Pumpellyite-(Al):
Ca
 
2
(Al,Fe
2+
 
,Mg)Al
 
2
[(OH,O)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
Pumpellyite-(Fe2+):
Ca
 
2
Fe
2+
 
Al
 
2
[(OH)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
Pumpellyite-(Fe3+):
Ca
 
2
(Fe
3+
 
,Mg,Fe
2+
 
)(Al,Fe
3+
 
)
 
2
[(OH,O)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
Pumpellyite-(Mg):
Ca
 
2
MgAl
 
2
[(OH)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
Pumpellyite-(Mn2+):
Ca
 
2
(Mn
2+
 
,Mg)(Al,Mn
3+
 
,Fe
3+
 
)
 
2
[(OH)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
Shuiskite:
Ca
 
2
(Mg,Al)(Cr,Al)
 
2
[(OH)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · 2H
 
2
O

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 Pumpellyite Group

Reference List:Passaglia, E. & Gottardi, G. (1973): Crystal chemistry and nomenclature of pumpellyites and julgoldites. Canadian Mineralogist, 12, 219-223.

Trzcienski, W. E. & Birkett, T. C. (1982): Compositional variations of pumpellyite along the western margin of the Quebec Appalachians. Canadian Mineralogist, 20, 203-209.

Akasaka, M.; Kimura, Y.; Omori, Y.; Sakakibara, M.; Shinno, I.; Togari, K. (1997): 57Fe Mossbauer study of pumpellyite-okhotskite-julgoldite series minerals. Mineralogy and Petrology 61, 181-198.

Internet Links for Pumpellyite Group

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