ISBN: 9781437184440

Purchase of this book includes free trial access to www. million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Qua… Más…

Purchase of this book includes free trial access to www. million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Quartz Rock, and by a more or less complete absence of the mica from this to a pure massive quartz rock also called Quartzite. It is a very firmly consolidated sandstone composed of quartz saud, cemented together by heat. Its colors are light gray, reddish or bluish. Buhr- stone, used for millstoues, Purchase of this book includes free trial access to www. million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Quartz Rock, and by a more or less complete absence of the mica from this to a pure massive quartz rock also called Quartzite. It is a very firmly consolidated sandstone composed of quartz saud, cemented together by heat. Its colors are light gray, reddish or bluish. Buhr- stone, used for millstoues, is a quartzite containing cellules, which give it a very rough surface; hence its peculiar value. The best Buhrstone comes from France, near Paris. It is of the Tertiary formation, and, therefore, of much more recent origin than the quartzite above described. The Itacolumite of Brazil and many gold regions, is a Micaceous Quartzite. Quartzite is used in the manufacture of glass and sandpaper, and for sawing marble. In the shape of cobble stones it is a common paving material. In addition to the rocks thus classified we may mention Coal and Ice, which are true simple rocks. Coal is fully described in another part of this work as a mineral. v. Ice. This simple rock in the high latitudes occurs in large masses and forms a considerable part of the solid crust of the earth. It is also familiar to us in the colder seasons, but usually exists in the warmer countries in its allotropic form of water. As the snow accumulates in the polar regions, its weight tends to consolidate it into a granular,131 stratified ice. As the mass increases, its weight, with other causes, gives it a slow motion, and it becomes a glacier. Glaciers were at one time moving all over North America as well as Europe. The formation of soil is due in a large degree to the abrasions caused by glaciers. The immense masses of ice which cover Greenland are in motion toward the sea, a very small part in an easterly direction, the rest toward Baffin's Bay. As these masses reach the shore they. Books, History~~General, Notes-on-Mineralogy~~Alonzo-G-Whitman, , , , , , , , , , Kessinger Publishing Company<

ISBN: 9781437184440

Purchase of this book includes free trial access to www. million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Qua… Más…

Purchase of this book includes free trial access to www. million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Quartz Rock, and by a more or less complete absence of the mica from this to a pure massive quartz rock also called Quartzite. It is a very firmly consolidated sandstone composed of quartz saud, cemented together by heat. Its colors are light gray, reddish or bluish. Buhr- stone, used for millstoues, is a quartzite containing cellules, which give it a very rough surface; hence its peculiar value. The best Buhrstone comes from France, near Paris. It is of the Tertiary formation, and, therefore, of much more recent origin than the quartzite above described. The Itacolumite of Brazil and many gold regions, is a Micaceous Quartzite. Quartzite is used in the manufacture of glass and sandpaper, and for sawing marble. In the shape of cobble stones it is a common paving material. In addition to the rocks thus classified we may mention Coal and Ice, which are true simple rocks. Coal is fully described in another part of this work as a mineral. v. Ice. This simple rock in the high latitudes occurs in large masses and forms a considerable part of the solid crust of the earth. It is also familiar to us in the colder seasons, but usually exists in the warmer countries in its allotropic form of water. As the snow accumulates in the polar regions, its weight tends to consolidate it into a granular,131 stratified ice. As the mass increases, its weight, with other causes, gives it a slow motion, and it becomes a glacier. Glaciers were at one time moving all over North America as well as Europe. The formation of soil is due in a large degree to the abrasions caused by glaciers. The immense masses of ice which cover Greenland are in motion toward the sea, a very small part in an easterly direction, the rest toward Baffin's Bay. As these masses reach the shore they. Books History~~General Notes-on-Mineralogy~~Alonzo-G-Whitman Kessinger Publishing Company<

2008, ISBN: 9781437184440

Indypublish.Com, Gebundene Ausgabe, 144 Seiten, Publiziert: 2008-10-27T00:00:01Z, Produktgruppe: Book, 0.85 kg, Rechtslehre, Recht, Kategorien, Bücher, Kurzgeschichten & Anthologien, Lite… Más…

Indypublish.Com, Gebundene Ausgabe, 144 Seiten, Publiziert: 2008-10-27T00:00:01Z, Produktgruppe: Book, 0.85 kg, Rechtslehre, Recht, Kategorien, Bücher, Kurzgeschichten & Anthologien, Literatur & Fiktion, Film, Kunst & Kultur, Geschichte allgemein, Politik & Geschichte, Indypublish.Com, 2008<