The Columbia Encyclopedia. Copyright © 2001-09 Columbia University Press. All rights reserved.
Ben Macdui or Ben Macdhui, Gaelic Beinn Muic Duibhe, peak, 4,296 ft (1,309 m) high, Moray, Scotland, in the Cairngorm Mts.; second highest peak in Scotland.
Dee. 1 River, c.90 mi (140 km) long, rising in the Cairngorms, Aberdeenshire, E Scotland, and flowing E past Ballater to the North Sea through an artificial channel at Aberdeen. The channel wa...
Quartz, one of the commonest of all rock-forming minerals and one of the most important constituents of the earth's crust. Chemically, it is silicon dioxide, SiO2. It occurs in crystals of the...
|
|