n
(mining) Shale or bituminous shale.
n
The indurated clay of coal mines.
n
(mining) Tin ore (cassiterite), when dressed, stamped and washed, ready for smelting. It is in the form of a black powder, like fine sand.
n
Alternative form of bog iron ore [(geology) Deposit of porous, impure limonite found in bogs and swamps.]
n
A seam of coal containing iron pyrites
n
(mining) A composite stone (quartz, schorl, and hornblende) in the walls of tin and copper lodes.
n
A field from which clay is dug up.
n
(countable) A piece of coal used for burning (this use is less common in American English)
n
(archaic) A briquet of coal.
adj
Covered in, or containing, coal.
n
An industrial plant in which coal is used to produce coke.
n
(dated) A kind of coal that easily splits into cubical fragments.
n
(mineralogy) Glance coal.
n
(mining) Rock containing ore from which minerals are extracted.
n
(mining) A mineral deposit from which iron can be viably extracted.
n
a type of sand with a high iron content, found on many west coast beaches in New Zealand, as well as elsewhere.
n
(mining) The ore from which a metal is derived.
n
An element which is combined with a metal to form an ore.
n
(mining) Alternative spelling of miner's moss [(mining) Carpeting in sluice boxes used to collect heavy minerals from sluiced paydirt.]
n
(mineralogy) A rounded mass, as of flint in chalk, or of ironstone in coal.
n
Coal dug from a pit, not charcoal.
n
(historical, Britain) Coal from a pit: mineral coal mined from a mine, as opposed to charcoal or seacoal.
n
(uncountable) Coal slag.
n
Alternative spelling of seacoal [Coal from inside the sea: mineral coal that washes up from the sea onto beaches, from which it can be collected and sold.]
n
A producer of shale oil.
n
An inferior kind of cannel coal from Scottish collieries, having a slaty structure.
n
(US, slang) The sign of a Dairy Queen fast food restaurant.
adj
(mining) Characteristic of thill
n
A sort of blue or black clay lying near a vein of coal.
n
(geology) A sheetlike body of crystallized minerals within a rock.
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