Alabaster is a mineral or rock that is soft, often used for carving, and is processed for plaster powder. Archaeologists and the stone processing industry use the word differently from geologists. The former use it in a wider sense that includes varieties of two different minerals: the fine-grained massive type of gypsum and the fine-grained banded type of calcite. Geologists define alabaster only as the gypsum type. Chemically, gypsum is a hydrous sulfate of calcium, while calcite is a carbonate of calcium.
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk. Alabaster, a fine-grained white or lightly tinted variety of gypsum, has been used for sculpture by many cultures including Ancient Egypt, Mesopotamia, Ancient Rome, the Byzantine Empire, and the Nottingham alabasters of Medieval England. Gypsum also crystallizes as translucent crystals of selenite. It forms as an evaporite mineral and as a hydration product of anhydrite.
Iosco County is a county in the U.S. state of Michigan; its eastern border is formed by Lake Huron. As of the 2020 census, the population was 25,237. The county seat is Tawas City.
The Mesabi Iron Range is a mining district in northeastern Minnesota following an elongate trend containing large deposits of iron ore. It is the largest of four major iron ranges in the region collectively known as the Iron Range of Minnesota. First described in 1866, it is the chief iron ore mining district in the United States. The district is located largely in Itasca and Saint Louis counties. It has been extensively worked since 1892, and has seen a transition from high-grade direct shipping ores through gravity concentrates to the current industry exclusively producing iron ore (taconite) pellets. Production has been dominantly controlled by vertically integrated steelmakers since 1901, and therefore is dictated largely by US ironmaking capacity and demand.
The Quincy Mine is an extensive set of copper mines located near Hancock, Michigan. The mine was owned by the Quincy Mining Company and operated between 1846 and 1945, although some activities continued through the 1970s. The Quincy Mine was known as "Old Reliable," as the Quincy Mine Company paid a dividend to investors every year from 1868 through 1920. The Quincy Mining Company Historic District is a United States National Historic Landmark District; other Quincy Mine properties nearby, including the Quincy Mining Company Stamp Mills, the Quincy Dredge Number Two, and the Quincy Smelter are also historically significant.
This is a list of the National Register of Historic Places listings in Houghton County, Michigan.
The Bingham Canyon Mine, more commonly known as Kennecott Copper Mine among locals, is an open-pit mining operation extracting a large porphyry copper deposit southwest of Salt Lake City, Utah, in the Oquirrh Mountains. The mine is the largest man-made excavation, and deepest open-pit mine in the world, which is considered to have produced more copper than any other mine in history – more than 19,000,000 short tons. The mine is owned by Rio Tinto Group, a British-Australian multinational corporation. The copper operations at Bingham Canyon Mine are managed through Kennecott Utah Copper Corporation which operates the mine, a concentrator plant, a smelter, and a refinery. The mine has been in production since 1906, and has resulted in the creation of a pit over 0.75 miles (1,210 m) deep, 2.5 miles (4 km) wide, and covering 1,900 acres. It was designated a National Historic Landmark in 1966 under the name Bingham Canyon Open Pit Copper Mine. The mine experienced a massive landslide in April 2013 and a smaller slide in September 2013.
Arden, Nevada was an unincorporated community in Clark County, Nevada. The area is now part of the town of Enterprise. Located about 7 miles (11 km) southwest of Las Vegas, the area is experiencing rapid growth in housing development on land formerly owned by the Bureau of Land Management.
In Michigan, copper mining became an important industry in the 19th and early 20th centuries. Its rise marked the start of copper mining as a major industry in the United States.
Farnams Village Historic District is a historic district in Cheshire, Massachusetts, United States. It encompasses the historic limestone mining community known as Farnams Village and the associated surviving industrial and mining infrastructure associated with a mining operation active from the late 19th century into the mid-20th century. The main village area is centered on Lanesborough Road in southern Cheshire, near Farnams and Quarry Roads, with quarry sites on the hillside to the west. The district was listed on the National Register of Historic Places in 2000.
The Calumet Historic District is a National Historic Landmark District that encompasses most of the village of Calumet, Michigan. The district was designated in 1989 for the community's importance in the history of the region's copper mining industry.
The Calumet and Hecla Industrial District is a historic district located in Calumet, Michigan and roughly bounded by Hecla & Torch Lake Railroad tracks, Calumet Avenue, Mine and Depot Streets. The district contains structures associated with the copper mines worked by the Calumet and Hecla Mining Company, located along a line above the copper lode, where railroad tracks connected separate mine heads. The Historic District is completely contained in the Calumet Historic District and the Keweenaw National Historical Park. It was designated a Michigan State Historic Site in 1973 and was listed on the National Register of Historic Places in 1974.
The Quincy Dredge Number Two is a dredge currently sunk in shallow water in Torch Lake, across M-26 from the Quincy Mining Company Stamp Mills Historic District and just east of Mason in Osceola Township. It was constructed to reclaim stamping sand from the lake for further processing, and was designated a Michigan State Historic Site in 1978.
The Jackson Mine is an open pit iron mine in Negaunee, Michigan, extracting resources from the Marquette Iron Range. The first iron mine in the Lake Superior region, Jackson Mine was designated as a Michigan State Historic Site in 1956 and listed on the National Register of Historic Places in 1971. The Lake Superior Mining Institute said, the mine "is attractive in the iron ore region of Michigan and the entire Lake Superior region, because of the fact it was here that the first discovery of iron ore was made, here the first mining was done, and from its ore the first iron was manufactured." Multiple other mines soon followed the Jackson's lead, establishing the foundation of the economy of the entire region. The mine is located northwest of intersection of Business M-28 and Cornish Town Road.
The Minong Mine is a historic mine site located west of McCargoe Cove campground on Isle Royale National Park, Michigan, United States. The district contains both the remnants of a 19th-century copper mine and remains of pre-contact mining activity. Pre-contact archeological sited in the district include a Late Archaic copper mining pit site designated 20KE24 and a nearby site designated 20KE73. It was listed on the National Register of Historic Places in 1977 and designated a National Historic Landmark in 2021.
The Shelden Avenue Historic District is a commercial historic district located along Shelden, Lake, & Montezuma Avenues in Houghton, Michigan. The district contains 43 contributing buildings in an area of 22 acres. It was listed on the National Register of Historic Places in 1987.
The Rio Tinto Boron Mine in Boron, California is California's largest open-pit mine and the largest borax mine in the world, producing nearly half the world's borates. Ore reserves are sufficient for production through at least 2050. It is operated by the Borax division of the Rio Tinto Group.
Mount Clemens station is a historic railroad depot located at 198 Grand Street in Mt. Clemens, Michigan. Young Thomas Edison learned telegraphy at this station. The building was listed on the National Register of Historic Places in 1981 as the Grand Trunk Western Railroad, Mount Clemens Station and designated a Michigan State Historic Site in 1973. It is now operated as the Michigan Transit Museum.
The Iron County MRA is a Multiple Resource Area addition to the National Register of Historic Places, which includes 72 separate structures and historic districts within Iron County, Michigan, United States of America. These properties were identified and placed on the Register in 1983, with the exception of one property that was placed on the Register in 1993.
The Douglas Sonoran Historic District, called the Sonoran District, is an historic district located in Douglas, Arizona. It is southwest of the business district, its rough boundaries are H Avenue on the west, from 6th to 9th Street, consisting of contiguous flush-fronted, single story, Sonoran tradition row buildings built between 1901 and 1935. The majority of the buildings were constructed using local gypsum-cast stone. This is the largest number of cast-stone buildings in the state. The District includes twenty-one buildings, of which seventeen are contributing structures.
