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Thulite
Thulite (sometimes called rosaline) is a translucent, crystalline or massive pink manganese-bearing variety of the mineral zoisite. Manganese substitutes for calcium in the structure with up to two percent Mn2+. Thulite is often mottled with white calcite and occurs as veins and fracture fillings transecting many types of rock. In mineralogical literature, thulite may sometimes refer to any pink zoisite. ''Clinothulite'' is the manganese bearing variety of monoclinic clinozoisite. Thulite was first discovered at a place called Sauland in Telemark, Norway in 1820.Mindat with location data It is named after the mythical island of in the belief that the island is Scandinavia. Thulite is used a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoisite
Zoisite, first known as saualpite, after its type locality, is a calcium aluminium hydroxy sorosilicate belonging to the epidote group of minerals. Its chemical formula is Ca2 Al3( Si O4)(Si2O7)O(O H). Zoisite occurs as prismatic, orthorhombic (2/m 2/m 2/m) crystals or in massive form, being found in metamorphic and pegmatitic rock. Zoisite may be blue to violet, green, brown, pink, yellow, gray, or colorless. Blue crystals are known under the name tanzanite. It has a vitreous luster and a conchoidal to uneven fracture. When euhedral, zoisite crystals are striated parallel to the principal axis (c-axis). Also parallel to the principal axis is one direction of perfect cleavage. The mineral is between 6 and 7 on the Mohs hardness scale, and its specific gravity ranges from 3.10 to 3.38, depending on the variety. It streaks white and is said to be brittle. Clinozoisite is a more common monoclinic polymorph of Ca2Al3(SiO4)(Si2O7)O(OH). Transparent material is fashioned into g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sorosilicate
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, silica (silicon dioxide, ) is usually considered a silicate mineral. 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 seawater. The frustules of dead diatoms are a major constituent of deep ocean sediment, and of diatomaceous earth. General structure A silicate mineral is general ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thule (myth)
Thule ( grc-gre, Θούλη, Thoúlē; la, Thūlē) is the most northerly location mentioned in ancient Greek and Roman literature and cartography. Modern interpretations have included Orkney, Shetland, northern Scotland, the island of Saaremaa (Ösel) in Estonia, and the Norwegian island of Smøla.Andreas Kleineberg, Christian Marx, Eberhard Knobloch und Dieter Lelgemann: ''Germania und die Insel Thule. Die Entschlüsselung von Ptolemaios' "Atlas der Oikumene".'' Wissenschaftliche Buchgesellschaft, Darmstadt 2010. In classical and medieval literature, ''ultima Thule'' (Latin "farthest Thule") acquired a metaphorical meaning of any distant place located beyond the "borders of the known world". By the Late Middle Ages and early modern period, the Greco-Roman Thule was often identified with the real Iceland or Greenland. Sometimes ''Ultima Thule'' was a Latin name for Greenland, when ''Thule'' was used for Iceland. By the late 19th century, however, ''Thule'' was frequently ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sorosilicates
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, silica (silicon dioxide, ) is usually considered a silicate mineral. 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 seawater. The frustules of dead diatoms are a major constituent of deep ocean sediment, and of diatomaceous earth. General structure A silicate mineral is general ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gemstones
A gemstone (also called a fine gem, jewel, precious stone, or semiprecious stone) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks (such as lapis lazuli, opal, and obsidian) and occasionally organic materials that are not minerals (such as amber, jet, and pearl) are also used for jewelry and are therefore often considered to be gemstones as well. Most gemstones are hard, but some soft minerals are used in jewelry because of their luster or other physical properties that have aesthetic value. Rarity and notoriety are other characteristics that lend value to gemstones. Apart from jewelry, from earliest antiquity engraved gems and hardstone carvings, such as cups, were major luxury art forms. A gem expert is a gemologist, a gem maker is called a lapidarist or gemcutter; a diamond cutter is called a diamantaire. Characteristics and classification The traditional classification in the West, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snillfjord
Snillfjord is a former municipality in Trøndelag county, Norway. The municipality existed from 1924 until its dissolution in 2020 when it was split between the municipalities of Hitra, Heim, and Orkland. It was part of the Fosen region. The administrative centre of the municipality was the village of Krokstadøra. Other villages in Snillfjord included Ytre Snillfjord, Hemnskjela, Selnes and Vutudal. At the time of its dissolution in 2020, the municipality was the 209th largest by area out of the 422 municipalities in Norway. Snillfjord was the 394th most populous municipality in Norway with a population of 987. The municipality's population density was and its population had decreased by 3.4% over the last decade. General information The municipality of Snillfjord was established on 1 July 1924 when it was separated from the large municipality of Hemne. The initial population was 776. During the 1960s, there were many municipal mergers across Norway due to the work of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington (state)
Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington Territory, which was ceded by the British Empire in 1846, by the Oregon Treaty in the settlement of the Oregon boundary dispute. The state is bordered on the west by the Pacific Ocean, Oregon to the south, Idaho to the east, and the Canadian province of British Columbia to the north. It was admitted to the Union as the 42nd state in 1889. Olympia is the state capital; the state's largest city is Seattle. Washington is often referred to as Washington state to distinguish it from the nation's capital, Washington, D.C. Washington is the 18th-largest state, with an area of , and the 13th-most populous state, with more than 7.7 million people. The majority of Washington's residents live in the Seattle metropolitan area, the center of trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Okanogan County, Washington
Okanogan County () is a county located in the U.S. state of Washington along the Canada–U.S. border. As of the 2020 census, the population was 42,104. The county seat is Okanogan, while the largest city is Omak. Its area is the largest in the state. About a fifth of the county's residents live in the Greater Omak Area. The county forms a portion of the Okanogan Country. The first county seat was Ruby, which has now been a ghost town for more than 100 years. Okanogan County was formed out of Stevens County in February 1888. The name derives from the Okanagan language place name ''ukʷnaqín''. The name Okanogan (Okanagan) also refers to a part of southern British Columbia. History Before Europeans arrived, the Okanogan County region was home to numerous indigenous peoples that would eventually become part of three Indian reservations referred to as the Northern Okanogans or Sinkaietk, Tokoratums, Kartars and Konkonelps. They spoke in seven types of Interior Salish languag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riverside, Washington
Riverside is a town in Okanogan County, Washington, United States. The population was 348 at the 2000 census and decreased to 280 at the 2010 census. History Riverside was first settled in the 1880s by Uriah Ward. When steamboats began traveling up the Okanogan River, Riverside was the upstream limit of navigation during the high water season. Riverside was officially incorporated on December 22, 1913. Riverside is one of the few locations in the world where the mineral thulite is found, the others being Mitchell County, North Carolina; Snillfjord, Norway; and the Otago region of New Zealand. Geography Riverside is located at (48.502830, -119.508718). According to the United States Census Bureau, the town has a total area of , of which, is land and is water. Sometimes considered to be part of Greater Omak, it is home to the Omak Airport. Demographics 2010 census As of the census of 2010, there were 280 people, 128 households, and 78 families living in the town. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitchell County, North Carolina
Mitchell County is a County (United States), county located in the U.S. state of North Carolina. As of the 2020 United States census, 2020 census, the population was 14,903. Its county seat is Bakersville, North Carolina, Bakersville, population 439 (2022), elevation 2470 ft. The county is home to the "Mineral City of the World", Spruce Pine and Roan Mountain which includes the world's largest natural rhododendron garden, and the longest stretch of grassy bald in the Appalachian range. Throughout the year such festivals as North Carolina Mineral and Gem Festival and North Carolina Rhododendron Festival bring many visitors to the area. History The county was formed in 1861 from parts of Burke County, North Carolina, Burke County, Caldwell County, North Carolina, Caldwell County, McDowell County, North Carolina, McDowell County, Watauga County, North Carolina, Watauga County, and Yancey County, North Carolina, Yancey County. It was named for Elisha Mitchell, professor of ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State Of Tyrol
Tyrol (; german: Tirol ; it, Tirolo) is a state (''Land'') in western Austria. It comprises the Austrian part of the historical Princely County of Tyrol. It is a constituent part of the present-day Euroregion Tyrol–South Tyrol–Trentino (together with South Tyrol and Trentino in Italy). The capital of Tyrol is Innsbruck. Geography The state of Tyrol is separated into two parts, divided by a strip. The larger territory is called North Tyrol (''Nordtirol'') and the smaller area is called East Tyrol (''Osttirol''). The neighbouring Austrian state of Salzburg stands to the east, while on the south Tyrol has a border with the Italian province of South Tyrol (Trentino-Alto Adige/Südtirol) which was part of the Austro-Hungarian Empire before the First World War. With a land area of , Tyrol is the third-largest state in Austria. Tyrol shares its borders with the federal state of Salzburg in the east and Vorarlberg in the west. In the north, it adjoins to the German state of Bav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austria
Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous city and state. A landlocked country, Austria is bordered by Germany to the northwest, the Czech Republic to the north, Slovakia to the northeast, Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the west. The country occupies an area of and has a population of 9 million. Austria emerged from the remnants of the Eastern and Hungarian March at the end of the first millennium. Originally a margraviate of Bavaria, it developed into a duchy of the Holy Roman Empire in 1156 and was later made an archduchy in 1453. In the 16th century, Vienna began serving as the empire's administrative capital and Austria thus became the heartland of the Habsburg monarchy. After the dissolution of the H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
