Tag Archives: prismatic cleavage

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

Posted in Commemorative Stamps, History Behind A Stamp, New Stamps, News, Themes, World | Tagged , , , , , , , , , , , | Leave a comment