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Pyrophylite
Pyrophyllite is a phyllosilicate mineral composed of aluminium silicate hydroxide: Al2Si4O10(OH)2. It occurs in two forms (habits): crystalline folia and compact masses; distinct crystals are not known. The folia have a pronounced pearly luster, owing to the presence of a perfect cleavage parallel to their surfaces: they are flexible but not elastic, and are usually arranged radially in fan-like or spherical groups. This variety, when heated, exfoliates and swells up to many times its original volume. The color of both varieties is white, pale green, greyish or yellowish; they are very soft (hardness of 1.0 to 1.5) and are greasy to the touch. The specific gravity is 2.65–2.85. The two varieties are thus very similar to talc. Occurrence Pyrophyllite occurs in phyllite and schistose rocks, often associated with kyanite, of which it is an alteration product. It also occurs as hydrothermal deposits. Typical associated minerals include: kyanite, andalusite, topaz, mica and quartz. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Silicate Minerals
Silicate minerals are rock-forming minerals made up of silicate groups. They are the largest and most important class of minerals and make up approximately 90 percent of Earth's crust. In mineralogy, the crystalline forms of silica (silicon dioxide, ) are usually considered to be tectosilicates, and they are classified as such in the Dana system (75.1). However, the Nickel-Strunz system classifies them as oxide minerals (4.DA). Silica is found in nature as the mineral quartz, and its polymorphs. On Earth, a wide variety of silicate minerals occur in an even wider range of combinations as a result of the processes that have been forming and re-working the crust for billions of years. These processes include partial melting, crystallization, fractionation, metamorphism, weathering, and diagenesis. Living organisms also contribute to this geologic cycle. For example, a type of plankton known as diatoms construct their exoskeletons ("frustules") from silica extracted from s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Andalusite
Andalusite is an aluminium nesosilicate mineral with the chemical formula Al2SiO5. This mineral was called andalousite by Delamétherie, who thought it came from Andalusia, Spain. It soon became clear that it was a locality error, and that the specimens studied were actually from El Cardoso de la Sierra, in the Spanish province of Guadalajara, not Andalusia. Andalusite is trimorphic with kyanite and sillimanite, being the lower pressure mid temperature polymorph. At higher temperatures and pressures, andalusite may convert to sillimanite. Thus, as with its other polymorphs, andalusite is an aluminosilicate index mineral, providing clues to depth and pressures involved in producing the host rock. Varieties The variety chiastolite commonly contains dark inclusions of carbon or clay which form a cruciform pattern when shown in cross-section. This stone was known at least from the sixteenth century, being taken to many European countries, as a souvenir, by pilgrims returning fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Sweden
Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic country by both area and population, and is the List of European countries by area, fifth-largest country in Europe. Its capital and largest city is Stockholm. Sweden has a population of 10.6 million, and a low population density of ; 88% of Swedes reside in urban areas. They are mostly in the central and southern half of the country. Sweden's urban areas together cover 1.5% of its land area. Sweden has a diverse Climate of Sweden, climate owing to the length of the country, which ranges from 55th parallel north, 55°N to 69th parallel north, 69°N. Sweden has been inhabited since Prehistoric Sweden, prehistoric times around 12,000 BC. The inhabitants emerged as the Geats () and Swedes (tribe), Swedes (), who formed part of the sea-faring peopl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Kristianstad
Kristianstad ( , ) is a Urban areas in Sweden, city and the seat of Kristianstad Municipality, Scania County, Sweden with 41,198 inhabitants in 2023. Since the 1990s, the city has gone from being a garrison town to a developed commercial city, focusing on nature preservation and a food profile. History The city was founded in 1614 by King Christian IV of Denmark (the city's name literally means 'Town of Christian'or "Christian's town") as a planned city after the burning of the nearby town of Vä and moving the city rights of the neighbouring town of Vå and Åhus to the new town. The purpose of the town was to safeguard the eastern half of the Danish province of Scania against any future raids from Sweden in the north, but also as a symbol of the power of Christian himself. One of these raids had sacked the nearby town of Vä in 1612. Vä then lost its charter and the people were relocated to the new, better fortified city. The king also founded the town of Kristianopel in ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Switzerland
Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland is geographically divided among the Swiss Plateau, the Swiss Alps, Alps and the Jura Mountains, Jura; the Alps occupy the greater part of the territory, whereas most of the country's Demographics of Switzerland, 9 million people are concentrated on the plateau, which hosts List of cities in Switzerland, its largest cities and economic centres, including Zurich, Geneva, and Lausanne. Switzerland is a federal republic composed of Cantons of Switzerland, 26 cantons, with federal authorities based in Bern. It has four main linguistic and cultural regions: German, French, Italian and Romansh language, Romansh. Although most Swiss are German-speaking, national identity is fairly cohesive, being rooted in a common historical background, shared ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Valais
Valais ( , ; ), more formally, the Canton of Valais or Wallis, is one of the cantons of Switzerland, 26 cantons forming the Switzerland, Swiss Confederation. It is composed of thirteen districts and its capital and largest city is Sion, Switzerland, Sion. Valais is situated in the southwestern part of the country. It borders the cantons of Canton of Vaud, Vaud and Canton of Bern, Bern to the north, the cantons of Canton of Uri, Uri and Ticino to the east, as well as Italy to the south and France to the west. It is one of the three large southern Alps, Alpine cantons, along with Ticino and Grisons. It is a bilingual canton, French and German being its two official languages. Traditionally, the canton is divided into Lower, Central, and Upper Valais, the latter region constituting the German-speaking minority. Valais is essentially coextensive with the valley of the Rhône from its headwaters to Lake Geneva, separating the Pennine Alps from the Bernese Alps, the two largest mount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Zermatt
Zermatt (, ) is a Municipalities of Switzerland, municipality in the district of Visp (district), Visp in the German language, German-speaking section of the canton of Valais in Switzerland. It has a year-round population of about 5,800 and is classified as a List of cities in Switzerland, town by the Swiss Federal Statistical Office (FSO). It lies at the upper end of Mattertal at an elevation of , at the foot of Switzerland's highest peaks. It lies about from the over high Theodul Pass bordering Italy. Zermatt is the southernmost commune of the German language, German ''Sprachraum''. Zermatt is famed as a mountaineering and ski resort of the Swiss Alps. Until the mid-19th century, it was predominantly an agricultural community; the First ascent of the Matterhorn, first and tragic ascent of the Matterhorn in 1865 was followed by a rush on the mountains surrounding the village, leading to the construction of many tourist facilities. The year-round population () is , though there ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Ural Mountains
The Ural Mountains ( ),; , ; , or simply the Urals, are a mountain range in Eurasia that runs north–south mostly through Russia, from the coast of the Arctic Ocean to the river Ural (river), Ural and northwestern Kazakhstan.Ural Mountains , Encyclopædia Britannica on-line The mountain range forms part of the Boundaries between the continents of Earth, conventional boundary between the continents of Europe and Asia, marking the separation between European Russia and Siberia. Vaygach Island and the islands of Novaya Zemlya form a further continuation of the chain to the north into the Arctic Ocean. The average altitudes of the Urals are around , the highest point being Mount Narodnaya, which reaches a height of . The mountains lie within the Ural (region), Ural geographical region and significantl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Yekaterinburg
Yekaterinburg (, ; ), alternatively Romanization of Russian, romanized as Ekaterinburg and formerly known as Sverdlovsk ( ; 1924–1991), is a city and the administrative centre of Sverdlovsk Oblast and the Ural Federal District, Russia. The city is located on the Iset River between the Idel-Ural, Volga-Ural region and Siberia, with a population of roughly 1.5 million residents, up to 2.2 million residents in the urban agglomeration. Yekaterinburg is the list of cities and towns in Russia by population, fourth-largest city in Russia, the largest city in the Ural Federal District, and one of Russia's main cultural and industrial centres. Yekaterinburg has been dubbed the "Third capital of Russia", as it is ranked third by the size of its economy, culture, transportation and tourism. Yekaterinburg was founded on 18 November 1723 and named after the Orthodox name of Catherine I of Russia, Catherine I (born Marta Helena Skowrońska), the wife of Russian Emperor Peter the G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Beresovsk
Beryozovskoye deposit, Berezovskoe gold deposit, Berezovsky deposit, Berezovsk Mines, and some other names () is the first known to primary deposit of gold in Russia. It is located 13 km northwest of Yekaterinburg in the central Urals Federal District. It was discovered in 1745 by a ''raskolnik'' Yerofey Markov. Minerals of the Beryozovskoye gold ore deposit The first mine was established in 1747. The deposit is named after the Beryozovka River (a tributary of Pyshma River) and is associated with the settlement of Berezovsky, now the town of Beryozovsky, Sverdlovsk Oblast. The following minerals were discovered at the deposit: aikinite (1789), vauquelinite (1819), cassedanneite (1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Newfoundland And Labrador
Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the population of Newfoundland and Labrador was estimated to be 545,579. The island of Newfoundland (and its smaller neighbouring islands) is home to around 94 per cent of the province's population, with more than half residing in the Avalon Peninsula. Labrador has a land border with both the province of Quebec, as well as a short border with the territory of Nunavut on Killiniq Island. The French overseas collectivity of Saint Pierre and Miquelon lies about west of the Burin Peninsula. According to the 2016 census, 97.0% of residents reported English as their native language, making Newfoundland and Labrador Canada's most linguistically homogeneous province. Much of the population is descended from English and Irish settlers, with the majority ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Manuels, Newfoundland And Labrador
Conception Bay South is a town in the Province of Newfoundland and Labrador, Canada. The town is commonly called CBS. The town is located on the Avalon Peninsula which forms part of the southern shore of Conception Bay which is in turn part of the island of Newfoundland. It is approximately 20 kilometres (12 miles) southwest of the provincial capital of St. John's. Conception Bay South is the second largest settlement in the province and is part of the St. John's metropolitan area, the 20th largest metropolitan area in Canada. Most of the residents are employed in the nearby cities of St. John's or Mount Pearl. The town lies on Cambrian bedrock, primarily shale containing limestone concretions and manganese ores. History Conception Bay South was formed in 1973 through the amalgamation of eight communities (Topsail, Chamberlains, Manuels, Long Pond, Foxtrap, Kelligrews, Upper Gullies and Seal Cove) all of which follow the coastline of Conception Bay. Lawrence Pond amalgamated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
