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Tellursilber
Telluric silver () — is an obsolete trivial name, which collectors and mineral traders, miners, geologists and representatives of other applied professions actually applied to several rare ore minerals, tellurides of silver,Krivovichev V. G. Mineralogical glossary. Scientific editor :uk:Булах Андрій Глібович, A. G. Bulakh. — St.Petersburg: St.Petersburg Univ. Publ. House. 2009. 556 p. — ISBN 978-5-288-04863-0 as well as to chemical compounds of similar composition. It may refer to: In mineralogy * Telluric silver or ''Telluro-silver glance (other), telluric silver glance'' — is Hessite, a rare ore mineral, silver telluride. Discovered and described in 1829, in the mines of Altai Territory, Western Altai. * Telluric silver or ''telluric silver-gold glance'' — is Petzite, a rare ore mineral close to hessite, a mixed telluride of silver and gold. * Telluric silver (rare) or ''Telluro-silver glance (other), telluric silver glance'' — S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telluro-silver Glance (other)
Telluro-silver glance () — is a trivial name given by collectors and mineral dealers, miners, geologists and other professions to at least two rare ore minerals, tellurides of silver.''A. Schrauf'' Ueber die Tellurerze Siebenbürgens. Zeitschrift für Krystallographie und Mineralogie. 1878. Band II. p.242/ref> It may refer to: * Telluric silver glance — hessite,''Krivovichev V. G.'' Mineralogical glossary. Scientific editor :uk:Булах Андрій Глібович, A. G. Bulakh. — St.Petersburg: St.Petersburg Univ. Publ. House. 2009. 556 p. — ISBN 978-5-288-04863-0 a rare ore mineral, telluric silver. Discovered in 1829, in the mines of Altai Territory, Western Altai. * Telluride silver glance (also ''written'' or ''graphic glance)'' — is sylvanite, a rare ore mineral mixed with gold and silver telluride, first discovered in Transylvania. * Telluric silver glance (or Telluric Gold-Silverglance) — petzite, a rare ore mineral close to hessite; silver and gold tellur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glances
Glance or glances (), sometimes also galenoids (similar to galena) — obsolete or partially obsolete collective name for the morphological group of minerals, compiled according to external characteristics. The group included more than three dozen names, mainly from the Sulfide mineral, group of sulfides and related compounds. As a rule, different examples of glosses have a gray mirror or metallic luster with refractive indices above 3, and sometimes a metallike appearance. Unlike the related pyrites or blende (other)#Substances, blendes, glosses are not considered ″colored″ because they do not have the yellowish or reddish ″copper″ tones, although impurities may well give individual varieties shades of color. The group of glances was formed spontaneously by miners and mining practitioners, but mineralogy as a science recognized this group until the mid-twentieth century. However, even in the 17th-19th centuries, at a time when luster or pyrites were considered ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empressite
Empressite or '' tellursilberblende'' is a mineral form of silver telluride, AgTe. It is a rare, grey, orthorhombic mineral with which can form compact masses, rarely as bipyramidal crystals. Recent crystallographic analysis has confirmed that empressite is a distinct mineral with orthorhombic crystal structure, different from the hexagonal Ag5−xTe3 with which empressite has been commonly confused in mineralogy literature. At the same time, empressite does not appear on the equilibrium Ag-Te phase diagram,Karakaya, I., Thompson, W.T.: J. Phase Equilibria 12, 56 (1991). and therefore it is only metastable at ambient conditions. Given infinite time, it would phase separate into pure Ag5Te3 and pure Te. The name empressite comes from the location of its discovery – the Empress Josephine mine, Saguache County, Colorado Saguache County (suh-WATCH ) is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 6,368. The county seat is Sagua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stützite
Stützite or stuetzite is a silver telluride mineral with formula: Ag5−xTe3 (with x = 0.24 to 0.36) or Ag7Te4. It was first described in 1951 from a museum specimen from Săcărâmb mine, Sacarimb, Romania. It was named for Austrians, Austrian mineralogist Andreas Stütz, Andreas Xaverius Stütz (1747–1806). It occurs with other Sulfide mineral, sulfide and telluride minerals in hydrothermal ore occurrences. Associated minerals include sylvanite, hessite, altaite, petzite, empressite, native tellurium, native gold, galena, sphalerite, colusite, tennantite and pyrite. References Telluride minerals Silver minerals Hexagonal minerals Minerals in space group 191 Minerals described in 1951 {{mineral-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transylvania
Transylvania ( or ; ; or ; Transylvanian Saxon dialect, Transylvanian Saxon: ''Siweberjen'') is a List of historical regions of Central Europe, historical and cultural region in Central Europe, encompassing central Romania. To the east and south its natural border are the Carpathian Mountains and to the west the Apuseni Mountains. Broader definitions of Transylvania also include the western and northwestern Romanian regions of Crișana and Maramureș, and occasionally Banat. Historical Transylvania also includes small parts of neighbouring Western Moldavia and even a small part of south-western neighbouring Bukovina to its north east (represented by Suceava County). Transylvania is known for the scenery of its Carpathian landscape and its rich history, coupled with its multi-cultural character. It also contains Romania's second-largest city, Cluj-Napoca, and other very well preserved medieval iconic cities and towns such as Brașov, Sibiu, Târgu Mureș, Bistrița, Alba Iuli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telluride Minerals
Telluride may refer to: *Telluride, Colorado, the county seat of San Miguel County in southwest Colorado *Telluride Ski Resort, a ski resort located in Mountain Village, Colorado *Telluride Film Festival, a film festival that takes place in Telluride, Colorado *Telluride (chemistry), the tellurium anion and its derivatives *Telluride mineral, any mineral that has the telluride ion as its main component *Telluride Association, an educational non-profit organization in the United States *Telluride House, a Cornell University residential society and one of the Telluride Association's programs * "Telluride" (Tim McGraw song), 2001; covered by Josh Gracin, 2008 * "Telluride" (Jade Eagleson song), 2023 *Kia Telluride The Kia Telluride is a mid-size crossover SUV with three-row seating manufactured and marketed by Kia since 2019. Positioned above the smaller Kia Sorento, Sorento, the Telluride was previewed as a concept car in 2016, with the production model d ..., a mid-size crossover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Minerals
Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals. It is one of the least reactive chemical elements, being the second-lowest in the reactivity series. It is solid under standard conditions. Gold often occurs in free elemental (native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as in electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Minerals
Silver is a chemical element; it has symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. Silver is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of the seven metals of antiquity, silver has had an enduring role in most human cultures. Other than in currency and as an investment medium (coins and bullion), silver is used in solar panels, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver (other)
Silver is a chemical element with symbol Ag and atomic number 47. Silver may also refer to: Other common meanings * Silver (color) * Silver (household), dishware, cutlery and other items made of silver * Silver medal, an award given to the runner-up of contests Arts and entertainment Books * '' Pirates of the Caribbean: Jack Sparrow: Silver'', a prequel novel in the ''Pirates of the Caribbean'' franchise * ''Silver'', a 2019 crime novel by Chris Hammer * ''Silver'' (Andrew Motion novel), a sequel to ''Treasure Island'' Film and TV * ''Silver'' (film), a 1999 Japanese film * Silver (TV channel), a former Scandinavian TV channel screening movies Video games * ''Silver'' (video game), a 1999 game for the PC and Dreamcast * '' Pokémon Silver'', a game for the Game Boy Fictional characters * Judge Silver, in the ''Judge Dredd'' comic strip * Long John Silver, main antagonist of Robert Louis Stevenson's novel ''Treasure Island'' * Silver, the Lone Ranger's horse * Si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tellurium
Tellurium is a chemical element; it has symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally found in its native form as elemental crystals. Tellurium is far more common in the Universe as a whole than on Earth. Its extreme rarity in the Earth's crust, comparable to that of platinum, is due partly to its formation of a volatile hydride that caused tellurium to be lost to space as a gas during the hot nebular formation of Earth. Tellurium-bearing compounds were first discovered in 1782 in a gold mine in Kleinschlatten, Transylvania (now Zlatna, Romania) by Austrian mineralogist Franz-Joseph Müller von Reichenstein, although it was Martin Heinrich Klaproth who named the new element in 1798 after the Latin 'earth'. Gold telluride minerals are the most notable natural gold compounds. However, they are not a commercially signif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Telluride
Silver telluride (Ag2Te) is a chemical compound, a telluride of silver, also known as disilver telluride or silver(I) telluride. It forms a monoclinic crystal. In a wider sense, ''silver telluride'' can be used to denote AgTe (silver(II) telluride, a metastable compound) or Ag5Te3. Silver(I) telluride occurs naturally as the mineral hessite, whereas silver(II) telluride is known as empressite. Silver telluride is a semiconductor which can be doped both n-type and p-type. Stoichiometric Ag2Te has n-type conductivity. On heating silver is lost from the material. Non-stoichiometric silver telluride has shown extraordinary magnetoresistance. Synthesis Porous silver telluride (AgTe) is synthesized by an electrochemical deposition method. The experiment can be performed using a potentiostat and a three-electrode cell with 200 mL of 0.5 M sulfuric acid electrolyte solution containing Ag nanoparticles at room temperature. Then a silver paste used in the tungsten ditelluride (WTe2) at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romania
Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to the east, and the Black Sea to the southeast. It has a mainly continental climate, and an area of with a population of 19 million people. Romania is the List of European countries by area, twelfth-largest country in Europe and the List of European Union member states by population, sixth-most populous member state of the European Union. Europe's second-longest river, the Danube, empties into the Danube Delta in the southeast of the country. The Carpathian Mountains cross Romania from the north to the southwest and include Moldoveanu Peak, at an altitude of . Bucharest is the country's Bucharest metropolitan area, largest urban area and Economy of Romania, financial centre. Other major urban centers, urban areas include Cluj-Napoca, Timiș ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
