1887-1956 analysis atlases authors bowen britishmuseum(naturalhistory) catalogsandcollections chemistry copperores earthsciences facies(geology) faculty fieldwork geochemistry geology goldores greatbritain greece identification intrusions(geology) juvenileliterature juvenilenonfiction magmatischesgestein magmatism metallogeny metamorphesgestein metamorphicrocks mineralogy minerals nature normanlevi ores petrogenesis petrology physicalorganicchemistry rocasígneas rochesignées rocks science silicateminerals silicates surfaces(physics) volcanoes