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Gjerdingerite Iron

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SHS149001

Gjerdingerite Iron

Description Tabs

Description
Locality: 
Gjerdingselva, Nordmarka, Lunner, Viken, Norway
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2.3 × 2.8 cm
Description

Gerdingerite fe on matrix

Mineral Data
What's on the rock

Gjerdingerite

Synonym Of: 

Gjerdingenite-Ca

Formula: 
K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O
Strunz: 
9.CE.30c
Hardness: 
0.0

Gjerdingenite-Fe

Formula: 
K2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O
Strunz: 
9.CE.30c
Hardness: 
0.0

Gjerdingenite-Na

Formula: 
K2Na2(Nb,Ti)4(Si4O12)2(OH,O)4·5H2O
Strunz: 
9.CE.30c
Hardness: 
0.0

Gjerdingenite-Mn

Formula: 
K2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O
Strunz: 
9.CE.30c
Hardness: 
5.0 - 0.0
Group Parent: 
Labuntsovite Group

Iron

Formula: 
Fe
Strunz: 
1.AE.05
Crystal System: 
Isometric
Hardness: 
4.5
Streak: 
Grey
Type Locality: 
Qeqertarsuaq Island (Disko Island), Qaasuitsup, Greenland