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  2. Portland stone - Wikipedia

    en.wikipedia.org/wiki/Portland_stone

    The Cenotaph, in Whitehall, London, is made from Portland stone. Portland stone is a limestone geological formation (formally named the Portland Stone Formation [1]) dating to the Tithonian age of the Late Jurassic that is quarried on the Isle of Portland in Dorset, England. [1] The quarries are cut in beds of white-grey limestone separated by ...

  3. List of decorative stones - Wikipedia

    en.wikipedia.org/wiki/List_of_decorative_stones

    The dimension-stone industry classifies stone based on appearance and hardness as either "granite", "marble" or "slate". 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 ...

  4. List of quarries in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_quarries_in_the...

    According to Marble.com, in 2016 there were 276 quarries producing natural stone in 34 states, and states producing the most granite were Texas, Massachusetts, Indiana, Wisconsin, and Georgia. [1] The term "quarry" refers also to sites producing aggregate , molding sand , or other resources besides cut stone.

  5. Portland Group (geology) - Wikipedia

    en.wikipedia.org/wiki/Portland_Group_(geology)

    It is divided into two formations, the Portland Stone Formation (or 'Portland Limestone Formation') and the underlying Portland Sandstone Formation (or 'Portland Sand Formation'). The Portland Stone Formation is further divided into a lower Portland Chert Member and an upper Portland Freestone Member, both of which are limestones. The Portland ...

  6. List of types of limestone - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_limestone

    Collyweston stone slate – Traditional limestone roofing material of central England (not a "true slate"; thin-bedded limestone) Cotham MarbleLimestone variety from Great Britain (not a "true marble"; stromatolitic limestone) Cotswold stone – oolitic limestone used for building and roofing in the Cotswolds

  7. Quarry - Wikipedia

    en.wikipedia.org/wiki/Quarry

    Many quarry stones such as marble, granite, limestone, and sandstone are cut into larger slabs and removed from the quarry. The surfaces are polished and finished with varying degrees of sheen or luster. Polished slabs are often cut into tiles or countertops and installed in many kinds of residential and commercial properties. Natural stone ...

  8. Quartz Vs. Granite: Which Stone Is Right For Your Countertops?

    www.aol.com/quartz-vs-granite-stone-countertops...

    Whereas quartz countertops are man-made, granite is a naturally occurring stone, quarried from the earth, then cut and polished into the countertop material so many know and love. Made of stern ...

  9. Geography of Dorset - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Dorset

    The Isle of Portland has been extensively quarried for Portland stone for centuries. Portland stone is an oolitic limestone that is greatly valued as a building stone because it has an attractive appearance, is easy to work, and resists weathering. It has long been used in the construction of important buildings both in the UK and around the world.

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