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Aspedamite

Type Locality
Herrebøkasa, Aspedammen, Idd, Halden, Østfold, Norway
Mineral Data
12(Fe+23Fe2+)Nb4(ThNb9Fe+23 Ti4+O42)(H2O)9(OH)3
Physical Properties
Hardness: 
3.0 - 4.0
Tenacity: 
brittle