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Brownstone is a brown Triassic–Jurassic [1] [2] sandstone that was historically a popular building material. The term is also used in the United States and Canada to refer to a townhouse clad in this or any other aesthetically similar material.
The grains of Jacobsville Sandstone range from .25 to .5 mm (0.0098 to 0.0197 in) in size. [14] Based on an average from samples taken in Marquette and Alger counties, Jacobsville Sandstone is composed of: 27.4% nonundulatory quartz, 27.0% undulatory quartz, 23.0% potassium feldspar , and 12.3% silicic volcanic clasts.
Hummelstown brownstone is a medium-grain, dense sandstone quarried near Hummelstown in Dauphin County, Pennsylvania, USA. It is a dark brownstone with reddish to purplish hues, and was once widely used as a building stone in the United States.
The area around the quarries is now fenced off and overgrown with vegetation The Barbour County Courthouse (1903–05) in Philippi, West Virginia, USA; its exterior is faced entirely in Hummelstown brownstone. Hummelstown brownstone pits were first opened by early German settlers in the late 18th Century. The Berst family were the original ...
The house also originally had its own gas plant for gas lighting, though this is now marked only by a brick and brownstone platform. [3] Rear elevation of Kenworthy Hall in 1934. View of the entrance hall, a portion of the cross hall, and the main staircase. The exterior walls of the house are built from a dull red brick that was locally made.
In 1994, a new operator, Connecticut Brownstone Quarries, began a small-scale quarrying operation to provide stone for restoration of brownstone buildings. [5] The town purchased the historic quarries and 42 acres (170,000 m 2) of adjacent land in 1999 and 2000. [5] A modern-day view of Brownstone Exploration and Discovery Park.
The Sespe Formation is a widespread fossiliferous sedimentary geologic unit in southern and south central California in the United States. It is of nonmarine origin, consisting predominantly of sandstones and conglomerates laid down in a riverine, shoreline, and floodplain environment between the upper Eocene Epoch (around 40 million years ago) through the lower Miocene.
The Bass Island Brownstone Company Quarry, also known as the Basswood Island Quarry, on Basswood Island in Lake Superior was operational from 1868 to 1893. The brownstone was first used for construction of the second Milwaukee County Courthouse, now demolished. The quarry, now filled with water, is about 200 feet (61 m) long and about 25 feet ...