To my big surprise, the wider Rotterdam area (Maasvlakte, Europoort, Botlek, Hoek van Holland, Maas Dykes) offers nice possibilities to find minerals. As the harbours are build with huge amounts of bolders and stones of different sizes and sources, one can do amazing finds.
Especially the Zirkon that I found is quite special and in good quality. As the localities are not always very accessible and the sites are not endlessly producing due to lack of natural sources, exact locations are not given. Most material originally comes from a few specific quaries in Norway, Germany and Belgium, in many cases the original location could be traced back via harbour authority and public archives. Amongst them are Quenast (B), Mayen Area (Vulkan Eifel, D; almost for sure Rothenberg!), Ourthe area (B), and Larvik (N). The Epidote originates from few totally different sources.
Sphene
Calcite Cristoballite Epidote Epidote
CalciteChristoballite Chabasite Hematite FoV 3mm Aragonite
Hematite FoV 5mm
Hematite
Hematite
ZirkonZirkon
ZirkonMolybdenite, Galena
Zirkon
EpidoteEpidote
Epidote
Zirkon
Zirkon
Zirkon
ZirkonEpidote
Epidote
EpidoteBiotite
Biotite
Biotite
Zirkon
Zirkon
ZirkonMolybdenite
Zirkon
EpidoteBaryte
Baryte
HematiteBiotite Hematite
Zirkon
ZirkonHematite Biotite Hematite
Calcite
Calcite
Calcite
Calcite
Calcite
CalciteQuartz
Quartz
Calcite
Quartz
Quartz
Quartz
Quartz
Quartz
Quartz
Growth on Pyrite FoV 4,2mm Maasvlakte
Epidote FoV 4mm
Albite FoV 5mm Epidote FoV 5mm
Calcite FoV 3cm
Heulandite FoV 5mm (Raman) Heulandite FoV 5mm (Raman) Heulandite Heulandite Heulandite FoV 1,7mm (Raman) Heulandite FoV 4mm (Raman) Tremolite-actinolite series Pyrite FoV 5mm (same bolder as the Adularia)
Marcasite Calcite FoV 4,5mm chabasite Chabasite
Tridymite on epidote FoV 1,9mm
Epidote Albite Marcasite (?) (FoV 4,5mm) Maasvlakte