Matching Pairs Match the Rocks to the factsOnline version Teaching you facts about rocks! by Becky Hull 1 2 3 4 5 6 __________ glows when it is exposed to UV light. __________ one of the first metals to have been used by humans. ________ organic-rich fine-grained sedimentary rock containing kerogen. ____________ _________ most abundant and economical fossil fuel available on the earth. __________ can be found in locations which have experienced rhyolitic eruptions. __________ is derived from a German word meaning to split