My name is Bart de Weerd and I live in The Netherlands. I have collected minerals for more 

then 35 years and in this time I have build up a systematic collection with about 2400 I.M.A. 

approved minerals. 

My interests are:   My systematic collection. My goal is to get as much as I.M.A. approved minerals.

                             Minerals from the Binn valley and especially from the Lengenbach quarry.

                             Calcite T.N. crystals,  especially twinned and unusual forms.

                             Zeolites.

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