 Coloring act on of iron in unburned clay. — Many clays show a yellow or brown coloration due to the presence of limonite, and a red coloration due to hematite; magnetite is rarely present in sufficient quantity to color the clay; siderite or pyrite...  Final Report - Seite 57von New Jersey Geological Survey, New Jersey. State Geologist - 1904Vollansicht - Über dieses Buch
 | Virginia. Division of Mineral Resources - 1905 - 682 Seiten
...and even affect the absorption and shrinkage of the material. Coloring Action of Iron in TTnburned Clay. — Many clays show a yellow or brown coloration,...clays is caused by the presence of silicate of iron. The intensity of color is not always an indication of the amount of iron present, since the same quantity... | |
 | Heinrich Ries - 1906 - 690 Seiten
...unburned clays. It may also serve as a flui and even affect the absorption and shrinkage of the material. Coloring Action of Iron in Unburned Clay. — Many...clays is caused by the presence of silicate of iron. The intensity of color is not always an indication of the amount of iron present. since the same quantity... | |
 | Heinrich Ries - 1906 - 538 Seiten
...also serve as a flux and even affect the absorption and shrinkage of the material. Coloring act on of iron in unburned clay. — Many clays show a yellow...clays is caused by the presence of silicate of iron, this being specially true of glauconitic ones. The intensity of color is not always an indication of... | |
 | HEINRICH. RIES - 1908 - 612 Seiten
...also serve as a flux and even affect the absorption and shrinkage of the material. Coloring act on of iron in unburned clay. — Many clays show a yellow...clays is caused by the presence of silicate of iron, this being specially true of glauconitic ones. The intensity of color is not always an indication of... | |
 | Heinrich Ries, Joseph Keele - 1912 - 586 Seiten
...It may also serve as a flux, and even affect the absorption and shrinkage of the material. Colouring Action of Iron in Unburned Clay. — Many clays show...of limonite, and a red coloration due to hematite. CLAY AND SHALE DEPOSITS " 197 vided a sufficient supply of oxygen is able to enter the pores of the... | |
 | 1913 - 748 Seiten
...affect the absorption and shrinkage of the material. Colouring Action of Iron in Unburned Clay.—Many clays show a yellow or brown coloration due to the...of limonite, and a red coloration due to hematite. vided a sufficient supply of oxygen is able to enter the pores of the clay before it is vitrified;... | |
 | John Johnston O'Neill - 1914 - 392 Seiten
...flux, and even affect the absorption and shrinkage of the material. Colouring Action of Iron Oxide in Unburned Clay. — Many clays show a yellow or...of limonite, and a red coloration due to hematite. Colouring Action of Iron Oxide on Burned Clay. — All of the iron ores will, in burning, change to... | |
 | 1914 - 460 Seiten
...flux, and even affect the absorption and shrinkage of the material. Colouring Action of Iron Oxide in Unburned Clay. — Many clays show a yellow or...of limonite, and a red coloration due to hematite. Colouring Action of Iron Oxide on Burned Clay. — All of the iron ores will, in burning, change to... | |
 | 1916 - 842 Seiten
...509 (1912). YELLOW BRICKS BY LA KEANE In the chapter on the chemical properties of clays, Ries1 says: "Many clays show a yellow or brown coloration due...clays is caused by the presence of silicate of iron, this being specially true of glauconitic ones. The intensity of color is not always an indication of... | |
 | 1926 - 360 Seiten
...— IRON. COLORING ACTION OF, IN UNBURNED CLAY. — Clays often show a yellow or brown discoloration, due to the presence of limonite; and a red coloration,...clay; siderite or pyrite may color It gray, and It is likely that the green color of many clays is caused by the presence of silicate of Iron, this being... | |
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