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Bariet – Mefis, Marokko
Bariet – Mefis, Taouz, Er Rachidia, Meknès-Tafilalet, Marokko – 16 x 9 x 6 cm – Collectienummer: NCB-159 – Ex. Ernesto Ossola
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Pyriet – Huanzala
Pyriet – Huanzala mine, Huánuco, Peru – 8 x 5,5 x 4 cm – Collectienummer: NCB-187
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Calciet – Steinbruch Winterberg
Calciet – Steinbruch Winterberg, Bad Grund, Harz, Germany
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Calciet – Steinbruch Winterberg
Calciet – Steinbruch Winterberg, Bad Grund, Harz, Germany
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Calciet – Steinbruch Winterberg
Calciet – Steinbruch Winterberg, Bad Grund, Harz, Germany
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Calciet – Steinbruch Winterberg
Calciet – Steinbruch Winterberg, Bad Grund, Harz, Germany
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Calciet – Steinbruch Winterberg
Calciet – Steinbruch Winterberg, Bad Grund, Harz, Germany
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Calciet – Steinbruch Winterberg
Calciet – Steinbruch Winterberg, Bad Grund, Harz, Germany
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Calciet – Steinbruch Winterberg
Calciet – Steinbruch Winterberg, Bad Grund, Harz, Germany
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Calciet – Steinbruch Winterberg
Calciet – Steinbruch Winterberg, Bad Grund, Harz, Germany