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Petit Granit (also known by a variety of names including: Nero Belga, Granit de Flandre, Pierre Bleue, Blue Stone, Belgian Granite, Belgian Blue Limestone, Arduin) is, despite its name, a grey-bluish limestone, rather than being a true Granite.
Bluestone is a cultural or commercial name for a number of natural dimension or building stone varieties, including: basalt in Victoria , Australia, and in New Zealand dolerites in Tasmania , Australia; and in Britain (including Stonehenge )
Having later gone into partnership with a Mr. Powell the firm was broken up in 1828, and the moulds sold to a sculptor, Felix Austin. Another well-known variety was Victoria stone, which is composed of three parts finely crushed Mount Sorrel (Leicestershire) granite to one of Portland cement, carefully mechanically mixed and filled into moulds.
W.N. Flynt Granite Co., in Monson, Massachusetts, a granite quarry that opened in 1809 and operated until 1935. By 1888, the company employed over 200 workers, and produced about 30,000 tons of granite per year. Quincy Quarries Reservation, in Quincy, Massachusetts, producer of granite from 1826 to 1963, including for the Bunker Hill Monument.
The granite of the dimension-stone industry along with truly granitic rock also includes gneiss, gabbro, anorthosite and even some sedimentary rocks. Natural stone is used as architectural stone (construction, flooring, cladding, counter tops, curbing, etc.) and as raw block and monument stone for the funerary trade.
German doorway in cast stone. Artificial stone is a name for various synthetic stone products produced from the 18th century onward. Uses include statuary, architectural details, fencing and rails, building construction, civil engineering work, and industrial applications such as grindstones.
In 1923 the petrologist Herbert Henry Thomas proposed that bluestone from the hills corresponded to that used to build the inner circle of Stonehenge, [24] and later geologists suggested that Carn Menyn (formerly called Carn Meini) was one of the bluestone sources. [25] Recent geological work has shown this theory to be incorrect. [26]
The building stones of Wales are many and varied reflecting the diverse geology of the country. Some of the earliest known use of natural stone for building purposes was the sourcing of Ordovician dolerite in the Preseli Hills for the 'bluestone' lintels of Stonehenge.
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