Sentence examples for bright coal from inspiring English sources
Warm moist climates are thought to produce broad bands of bright coal.
Cooler temperate climates, on the other hand, are thought to produce detrital coal with relatively little bright coal.
They include bright coal, which contains more than 80 percent vitrinite, and splint coal, which contains more than 30 percent opaque matter.
In the Karharbari formation, only bright coal, banded bright coal and banded coals have been recorded (Fig. 4).
Life has watched continents crash together and tear themselves apart; skies glowing like bright coals; tropical seas frozen into stillness: it has endured.
The dull and semi-dull coals usually are found in touch with the mudstone (roof, floor, and parting) while the bright or semi-bright coal occurs as an interlayer between them.
Behind this figure and over Christ's right shoulder is the head of another participant, seemingly a man holding a pole with a lighting device in the form of a brazier containing bright red coals.
They know the future is brighter without coal, that clean energy and energy efficiency create jobs and won't cause asthma attacks.
Results show that, from the bright to dull coal, the coal density, ash yield, and mineral content increase while the vitrinite content and pore-fracture development degree decrease gradually.
From the bright to dull coal and mudstone, the values of thorium, kalium, uranium elements and GR (or GR without uranium) increase while those of AC including the longitudinal, transverse, and Stoneley waves decrease gradually.
Coal macrolithotype (bright, semi-bright, semi-dull, and dull coals) controls the heterogeneity of coal physical properties in the coalbed methane (CBM) reservoir.
