Tag Archives: mica

Croatia Issued Stamps on Minerals and Rocks

Science which examines the origins and classification of rocks is called petrology while the minerals which build rocks are the subject of investigation of mineralogy. Rocks build the solid part of the Earth – the lithosphere, which encompasses the crust … Continue reading

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Croatia will Issue Stamps on Minerals

By Wolfgang Beyer Vice Chairman of the German Philatelic Collector Group ArGe Zoologie Croatia will issue a set of two stamps on Rhyolite and Sea Salt on 24th October 2016. Rhyolite is a sour effusive rock of grey to green … Continue reading

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