...68.00 20.00 .... 12.00 12.00 Oligoclase, 62.00 24.00 9.0o 5.00 Labradorite, 53.00 30.00 4.00 13.00 Anorthite, 43.00 37.00 .... 20.00 Mica. — This is...renders them very conspicuous, even when small. Very fewclays are entirely free from mica, even in their washed condition, for, on account of the light...

...mineral, being easily attacked by the weather or soil waters, and so decomposed to a whitish clay. Mica. — This is one of the few minerals in clay...entirely free from mica even in their washed condition, because the light scaly character of the mineral keeps it in suspension, until it settles in quiet...

...begin to flux with other ingredients of the clay at a much lower temperature. (See under Alkalies.) Mica. — This is one of the few minerals in clay...when small. Very few clays are entirely free from mira, even in their washed condition, for, on account of the light scaly character of the mineral,...

...mineral, being easily attacked by the weather or soil waters, and. so decomposed to a whitish clay. Mica. — This is one of the few minerals in clay...easily detected with the naked eye, for it occurs common Iv in the form of thin, scaly particles, whose bright shining surface renders them very conspicuous...

...begin to flux with other ingredients of the clay at a much lower temperature. (See under Alkalies.) Mica. — This is one of the few minerals in clay...the mineral, it floats off with the clay particles. Some clays are highly micaceous, but such are rarely of much commercial value. There are several species...

...clay at a much lower temperature. (See under Alkalies.) Mica. — This is one of the few minerals hi clay that can be easily detected with the naked eye....surface renders them very conspicuous, even when small. Yen' few clays arc entirely free from mica, even in their washed condition, for, on account of the...

...flux with other ingredients of the clay at a much lower temperature (See under Alkalies.) Mica.—This is one of the few minerals in clay that can be easily...the mineral, it floats off with the clay particles. Some clays are highly micaceous, but such are rarely of much commercial value. Iron Ores.—This title...

...greater one at about 10 per cent kaolin. Near these eutectics the rate of deformation is much faster.3 Mica. — This is one of the few minerals in clay that can often be detected with the naked eye, for it occurs commonly in the form of thin, scaly particles whose...