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Page 3
... call these constituents , having characters of their own , the minerals which compose the rock . The granite consists of at least three distinct minerals , the sand- stone of only one . Now , if we break THE MATERIALS OF THE EARTH 3.
... call these constituents , having characters of their own , the minerals which compose the rock . The granite consists of at least three distinct minerals , the sand- stone of only one . Now , if we break THE MATERIALS OF THE EARTH 3.
Page 6
... characters . The clear little lumps are called Quartz , and do not tell us very much by their external appearance . They break across with irregular curving fractures , much as glass does ; and they have in this case no regular shape ...
... characters . The clear little lumps are called Quartz , and do not tell us very much by their external appearance . They break across with irregular curving fractures , much as glass does ; and they have in this case no regular shape ...
Page 8
... characters in common . Again and again their proper form can be seen ; their molecules are clearly capable of building up six - sided plates . This structure is so common that it can- not be accidental ; and careful measures show that ...
... characters in common . Again and again their proper form can be seen ; their molecules are clearly capable of building up six - sided plates . This structure is so common that it can- not be accidental ; and careful measures show that ...
Page 9
... characters here . 1. Colour . - When there are several minerals in a rock , this character often clearly marks out one from another . But it is of far less importance than might be supposed , since many common minerals are coloured by ...
... characters here . 1. Colour . - When there are several minerals in a rock , this character often clearly marks out one from another . But it is of far less importance than might be supposed , since many common minerals are coloured by ...
Page 10
Grenville Arthur James Cole. rely on other characters besides colour in the determining of a mineral species . - – 2 ... characters . A mineral may be brittle , and yet may be soft enough to be cut into with a knife , like Copper Pyrites ...
Grenville Arthur James Cole. rely on other characters besides colour in the determining of a mineral species . - – 2 ... characters . A mineral may be brittle , and yet may be soft enough to be cut into with a knife , like Copper Pyrites ...
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Common terms and phrases
alluvial alluvium Alps andesite augite banks basalt become beds beneath blocks calcium carbonate Chalk character CHARLES GRIFFIN chemical clay cliffs coast colour cone Cretaceous Crown 8vo crust crystalline crystals denudation deposits dykes earth Engineer Eocene escarpment EXETER STREET feet felspars flint flow folded fossils Fully Illustrated Geol Geology glacier glass gneiss grains granite Handsome Cloth hills hollow Hornblende igneous iron Juras Jurassic lake Lake Bonneville land Large 8vo lava layers Leith Hill limestone LONDON lower marine mass material Mesozoic mica miles minerals Miocene mountain occur orthoclase oxide pebbles plain plane Plates Pliocene Practical produced Professor pyroxene quartz region Revised rhyolite ridge rise river rock round salts sand sandstone SECOND EDITION seen shells side silica slope specific gravity steep stones STRAND strata stream structure summit surface TEXT-BOOK unconformity upper valley volcanic Wealden wind
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