| 释义 |
Boghead, boghead|ˈbɒghɛd|
The name of an estate near Bathgate in West Lothian applied attrib. to a deep brown shale found there. See torbanite.
1858,1867[see torbanite]. 1919Chambers's Jrnl. June 390/2 The famous oil-shale of Torbanehill, torbanite or bog-head cannel, is often regarded as a variety of cannel coal. 1937Nature 20 Feb. 340/1 Boghead coal is a comparatively rare and valuable material yielding gas and paraffin on distillation. 1960Gloss. Coal Terms (B.S.I.) 6 Boghead coal, Torbanite, coal resembling cannel coal in physical appearance and properties, but distinguished microscopically by the presence of the remains of algae. |