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Specimen: Bituminous Coal
Type: Sedimentary Rock
Location: Lancashire, UK
Size (picture scale cube=1cm): 45 x 33 x 26mm (1.77 x 1.3 x 1.02 inches)
The common fossil fuel Coal actually originated from England, being an old English word ‘Col’ meaning mineral of fossilised carbon. It usually occurs in seams. Coal is composed primarily of carbon, and is found in the Carboniferous period.
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt. It is of higher quality than lignite coal but of poorer quality than anthracite. Formation is usually the result of high pressure being exerted on lignite. Its coloration can be black or sometimes dark brown; often there are well-defined bands of bright and dull material within the seams. These distinctive sequences, which are classified according to either ‘dull, bright-banded’ or ‘bright, dull-banded’, is how bituminous coals are stratigraphically identified.
Bituminous coal is an organic sedimentary rock formed by diagenetic and sub metamorphic compression of peat bog material. Its primary constituents are macerals: vitrinite, and liptinite.
ACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.
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