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Witherite
Witherite is a barium carbonate mineral, Ba C O3, in the aragonite group. Witherite crystallizes in the orthorhombic system and virtually always is twinned. The mineral is colorless, milky-white, grey, pale-yellow, green, to pale-brown. The specific gravity is 4.3, which is high for a translucent mineral. It fluoresces light blue under both long- and short-wave UV light, and is phosphorescent under short-wave UV light. Witherite forms in low-temperature hydrothermal environments. It is commonly associated with fluorite, celestine, galena, barite, calcite, and aragonite. Witherite occurrences include: Cave-in-Rock, Illinois, US; Pigeon Roost Mine, Glenwood, Arkansas, US; Settlingstones Mine Northumberland; Alston Moor, Cumbria; Anglezarke, Lancashire and Burnhope, County Durham, England; Thunder Bay area, Ontario, Canada, Germany, and Poland (Tarnowskie Góry and Tajno at Suwałki Region). Witherite was named after William Withering (1741–1799) an English physician a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbonate Mineral
Carbonate minerals are those minerals containing the carbonate ion, . Carbonate divisions Anhydrous carbonates *Calcite group: trigonal **Calcite CaCO3 **Gaspéite (Ni,Mg,Fe2+)CO3 **Magnesite MgCO3 **Otavite CdCO3 **Rhodochrosite MnCO3 **Siderite FeCO3 **Smithsonite ZnCO3 **Spherocobaltite CoCO3 *Aragonite group: orthorhombic **Aragonite CaCO3 **Cerussite PbCO3 **Strontianite SrCO3 **Witherite BaCO3 **Rutherfordine UO2CO3 **Natrite Na2CO3 Anhydrous carbonates with compound formulas *Dolomite group: trigonal **Ankerite CaFe(CO3)2 **Dolomite (mineral), Dolomite CaMg(CO3)2 **Huntite Mg3Ca(CO3)4 **Minrecordite CaZn(CO3)2 **Barytocalcite BaCa(CO3)2 Carbonates with hydroxyl or halogen *Carbonate with hydroxide: monoclinic **Azurite Cu3(CO3)2(OH)2 **Hydrocerussite Pb3(CO3)2(OH)2 **Malachite Cu2CO3(OH)2 **Rosasite (Cu,Zn)2CO3(OH)2 **Phosgenite Pb2(CO3)Cl2 **Hydrozincite Zn5(CO3)2(OH)6 **Aurichalcite (Zn,Cu)5(CO3)2(OH)6 Hydrated carbonates *Hydromagnesite Mg5(CO3)4(OH)2.4H2O *Ikaite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barium Carbonate
Barium carbonate is the inorganic compound with the formula BaCO3. Like most alkaline earth metal carbonates, it is a white salt that is poorly soluble in water. It occurs as the mineral known as witherite. In a commercial sense, it is one of the most important barium compounds. Preparation Barium carbonate is made commercially from barium sulfide by treatment with sodium carbonate at 60 to 70 °C (soda ash method) or, more commonly carbon dioxide at 40 to 90 °C: In the soda ash process, an aqueous solution of barium sulfide is treated with sodium carbonate: :BaS + H2O + CO2 → BaCO3 + H2S Reactions Barium carbonate reacts with acids such as hydrochloric acid to form soluble barium salts, such as barium chloride: : + 2 HCl → + + Pyrolysis of barium carbonate gives barium oxide. Uses It is mainly used to remove sulfate impurities from feedstock of the chlor-alkali process. Otherwise it is a common precursor to barium-containing compounds such as ferrites. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celestine (mineral)
Celestine (the IMA-accepted name) or celestite is a mineral consisting of strontium sulfate ( Sr S O). The mineral is named for its occasional delicate blue color. Celestine and the carbonate mineral strontianite are the principal sources of the element strontium, commonly used in fireworks and in various metal alloys. Etymology Celestine derives its name from the Latin word ''caelestis'' meaning celestial which in turn is derived from the Latin word ''caelum'' meaning sky or heaven. Occurrence Celestine occurs as crystals, and also in compact massive and fibrous forms. It is mostly found in sedimentary rocks, often associated with the minerals gypsum, anhydrite, and halite. On occasion in some localities, it may also be found with sulfur inclusions. The mineral is found worldwide, usually in small quantities. Pale blue crystal specimens are found in Madagascar. White and orange variants also occurred at Yate, Bristol, UK, where it was extracted for commercial purposes unt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thunder Bay
Thunder Bay is a city in and the seat of Thunder Bay District, Ontario, Canada. It is the most populous municipality in Northwestern Ontario and the second most populous (after Greater Sudbury) municipality in Northern Ontario; its population is 108,843 according to the 2021 Canadian Census. Located on Lake Superior, the census metropolitan area of Thunder Bay has a population of 123,258 and consists of the city of Thunder Bay, the municipalities of Oliver Paipoonge and Neebing, the townships of Shuniah, Conmee, O'Connor, and Gillies, and the Fort William First Nation. European settlement in the region began in the late 17th century with a French fur trading outpost on the banks of the Kaministiquia River.Brief History of Thunder Bay City of Thunder Bay. Retrieved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain, which lies in the North Atlantic, and includes over 100 smaller islands, such as the Isles of Scilly and the Isle of Wight. The area now called England was first inhabited by modern humans during the Upper Paleolithic period, but takes its name from the Angles, a Germanic tribe deriving its name from the Anglia peninsula, who settled during the 5th and 6th centuries. England became a unified state in the 10th century and has had a significant cultural and legal impact on the wider world since the Age of Discovery, which began during the 15th century. The English language, the Anglican Church, and Engli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
County Durham
County Durham ( ), officially simply Durham,UK General Acts 1997 c. 23Lieutenancies Act 1997 Schedule 1(3). From legislation.gov.uk, retrieved 6 April 2022. is a ceremonial county in North East England.North East Assembly About North East England. Retrieved 30 November 2007. The ceremonial county spawned from the historic County Palatine of Durham in 1853. In 1996, the county gained part of the abolished ceremonial county of Cleveland.Lieutenancies Act 1997 . Retrieved 27 October 2014. The county town is the of |
Burnhope
Burnhope is a village and civil parish in County Durham, England. It is located in the Craghead valley on the opposite side to Stanley and has 1,564 inhabitants, as measured in the 2011 census. Burnhope overlooks Lanchester in the Browney Valley, roughly two miles to the west and Maiden Law is roughly two miles north. Holmside is roughly two miles to the south east. The village Burnhope is a village of contrasts, being home to many of the area's poorest and richest people (among them, children's author Terry Deary). In 2003 two wind turbines were erected in a field between the village and nearby Craghead, creating a new landmark to accompany the transmission mast. Burnhope is the only place that the Durham Miners' Gala has been held apart from Durham. This was in 1926 the year of the General Strike A general strike refers to a strike action in which participants cease all economic activity, such as working, to strengthen the bargaining position of a trade union or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancashire
Lancashire ( , ; abbreviated Lancs) is the name of a historic county, ceremonial county, and non-metropolitan county in North West England. The boundaries of these three areas differ significantly. The non-metropolitan county of Lancashire was created by the Local Government Act 1972. It is administered by Lancashire County Council, based in Preston, and twelve district councils. Although Lancaster is still considered the county town, Preston is the administrative centre of the non-metropolitan county. The ceremonial county has the same boundaries except that it also includes Blackpool and Blackburn with Darwen, which are unitary authorities. The historic county of Lancashire is larger and includes the cities of Manchester and Liverpool as well as the Furness and Cartmel peninsulas, but excludes Bowland area of the West Riding of Yorkshire transferred to the non-metropolitan county in 1974 History Before the county During Roman times the area was part of the Bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anglezarke
Anglezarke is a sparsely populated Civil parishes in England, civil parish in the Borough of Chorley in Lancashire, England. It is an agricultural area used for sheep farming, also site of reservoirs that were built to supply water to Liverpool. The area has a large expanse of moorland with many public footpaths and bridleways. The area is popular with walkers and tourists, it lies in the West Pennine Moors in Lancashire, sandwiched between the moors of Withnell and Rivington, and is close to the towns of Chorley, Horwich and Darwen. At the 2001 census it had a population of 23. At the 2011 Census the population is included within Heapey civil parish. The area was subjected to depopulation after the reservoirs were built. Toponymy Anglezarke is derived from the Old Norse name ''Anlaf'' and the Old Norse ''erg'', a 'hill pasture or shieling'. The elements together mean 'Anlaf's hill pasture'. In 1202 it was recorded as 'Andelevesarewe'. By 1225 this had become 'Anlavesargh'. In a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cumbria
Cumbria ( ) is a ceremonial and non-metropolitan county in North West England, bordering Scotland. The county and Cumbria County Council, its local government, came into existence in 1974 after the passage of the Local Government Act 1972. Cumbria's county town is Carlisle, in the north of the county. Other major settlements include Barrow-in-Furness, Kendal, Whitehaven and Workington. The administrative county of Cumbria consists of six districts ( Allerdale, Barrow-in-Furness, Carlisle, Copeland, Eden and South Lakeland) and, in 2019, had a population of 500,012. Cumbria is one of the most sparsely populated counties in England, with 73.4 people per km2 (190/sq mi). On 1 April 2023, the administrative county of Cumbria will be abolished and replaced with two new unitary authorities: Westmorland and Furness (Barrow-in-Furness, Eden, South Lakeland) and Cumberland ( Allerdale, Carlisle, Copeland). Cumbria is the third largest ceremonial county in England by area. It i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alston Moor
Alston Moor, formerly known as Alston with Garrigill, is a civil parish and electoral ward in Cumbria, England, based around the small town of Alston. It is set in the moorlands of the North Pennines, mostly at an altitude of over 1000 feet. The parish/ward had a population of 2,088 at the 2011 census. As well as the town of Alston, the parish includes the villages of Garrigill and Nenthead, along with the hamlets of Nenthall, Nentsberry, Galligill, Blagill, Ashgill, Leadgate, Bayles and Raise. Alston Moor is part of the North Pennines Area of Outstanding Natural Beauty (AONB), the second largest of the 40 AONBs in England and Wales. Under the Local Government Act 1894, the parish, then known as Alston with Garrigill, which had previously been a rural sanitary district on its own, became one of the few single-parish rural districts. This remained in existence until 1974 when it became part of the Eden district. On 18 June 1974 the parish was renamed from "Alston with Garri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northumberland
Northumberland () is a county in Northern England, one of two counties in England which border with Scotland. Notable landmarks in the county include Alnwick Castle, Bamburgh Castle, Hadrian's Wall and Hexham Abbey. It is bordered by land on three sides; by the Scottish Borders region to the north, County Durham and Tyne and Wear to the south, and Cumbria to the west. The fourth side is the North Sea, with a stretch of coastline to the east. A predominantly rural county with a landscape of moorland and farmland, a large area is part of Northumberland National Park. The area has been the site of a number of historic battles with Scotland. Name The name of Northumberland is recorded as ''norð hẏmbra land'' in the Anglo-Saxon Chronicle, meaning "the land north of the Humber". The name of the kingdom of ''Northumbria'' derives from the Old English meaning "the people or province north of the Humber", as opposed to the people south of the Humber Estuary. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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