from The Century Dictionary and Cyclopedia
- n. In mineralogy, a white, cotton-like variety of calcite occurring as an efflorescence, as at the quarries of Nanterre, near Paris.
- n. A fine mechanical sediment resulting from the grinding together of minerals and rocks. The term is used especially to designate the constituents of the till which resemble ordinary clays in fineness of grain but differ from them in degree of oxidation.
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Finely scaly varieties with a pearly lustre are known as argentine and aphrite (German _Schaumspath_); soft, earthy and dull white varieties as agaric mineral, rock-milk, rock-meal, &c. -- these form a transition to marls, chalk, &c.
It makes by its erosion not only rock-meal, but also large
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Toward the end of the ice period, while its Hoffman companion continued to grind rock-meal for coming plants, the main trunk became torpid, and vanished, exposing wide areas of rolling rock-waves and glistening pavements, on whose channelless surface water ran wild and free.
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