Сурьма, Stibium, Sb (51) Сурьму (англ. Antimony, франц. Antimoine, нем. Antimon) человек знает издавна и в виде металла, и в виде некоторых соединений. Бертло описывает фрагмент вазы из металлической сурьмы ...

The aqueous speciation and mineralogy of antimony (Sb) in waters and tailings at Beaver Brook antimony deposit have been analyzed to understand Sb mobility during the initial stages of stibnite (Sb2S3) weathering in a near-surface environment. Dissolution of stibnite in oxidizing conditions releases Sb in drainage water and Sb is incorporated into the mineral structures of …

Сурьма — что это за металл. Подробные характеристики, физические и химические свойства. Где добывают, источники и цена. ... Sb – металл, не входящий в категорию цветных, в быту он встречается ...

The Mineral stibnite Stibnite is named after the latin stibium, which is the old name of the element antimony (Sb). Stibnite was and continues to be the primary ore of antimony. Stibnite forms some of the most outstanding natural crystals …

[antimony] элемент V группы Периодической системы; атомный номер 51, атомная масса 121,75; металл серебристо белый с синеватым оттенком. В природе стабильны изотопы 121Sb (57,25 %) и 123Sb (42,75 %). Sb известна с глубубокой древности (за 3 ...

stibnite, antimony sulfide (Sb 2 S 3 ), the principal ore of antimony. This mineral has a brilliant metallic lustre, is lead- to steel-gray in colour, and fuses readily in a candle flame (at about 525° C [977° F]). It often possesses a bladed habit, is striated, and has one perfect cleavage. Stibnite occurs in massive forms in gneiss and granite.

Stibnite - Sb 2 S 3. Stibnite and Calcite From Herja Mine, Chiuzbaia (Kisbanya), Baia Mare, Maramures Co., Romania. Photo: Quebul Fine Minerals: Stibnite is a toxic antimony sulfide mineral with an orthorhombic crystal lattice and a source of metalloid antimony. Stibnite paste has been used for thousands of years for cosmetics to darken ...

Sb 2 S 3. The sample at right is about 12x25 cm and is also from Ehime, Japan. These samples of stibnite are displayed in the Smithsonian Museum of Natural History. Stibnite is a sulfide mineral of antimony. It has the composition Sb 2 S 3 (OH) or Sb 2 S 3. The left sample is about 4x25 cm and is from Ichinokawa mine, Ehime, Japan.

Johanna Feary, Paul Cullinan, in Encyclopedia of Respiratory Medicine(Second Edition), 2022. Production and sources of exposure. Antimony is a metalloid which occurs mainly as the sulphide mineral stibnite (antimony trisulphide Sb 2 S 3) in metamorphic deposits in granites and limestone.Worldwide, the greatest producer of antimony is China followed by Russia and Bolivia.

Abstract Oxidative dissolution of stibnite (Sb 2 S 3 ), one of the most prevalent geochemical processes for antimony (Sb) release, can be promoted by Sb-oxidizing microbes, which were studied under alkaline and neutral conditions but rarely under acidic conditions.

Refinement of the crystal structure of stibnite, Sb 2 S 3. PETER BAYLISS and WERNER NOWACKI. From the journal Zeitschrift für Kristallographie ... PETER and NOWACKI, WERNER. "Refinement of the crystal structure of stibnite, Sb2S3" Zeitschrift für Kristallographie - Crystalline Materials, vol. 135, no. 1-6, 1972, pp. 308-315. https://doi ...

Arun P, Vedeshwar A G (1996) On the structure of stibnite (Sb 2 S 3), Journal of Materials Science, 31, 6507-6510 Lukaszewicz K, Pietraszko A, Stepien-Damm J, Grigas J, Kajokas A (1997) Crystal structure of stibnite Sb 2 S 3 in phase …

Stibnite Wuling Mine, Jiujiang Prefacture, Jiangxi Prov., China 12.6x 6.2x 3.6 cm A few years back, the best stibnite being found was coming from the Xikuangshan mine, in neighboring Hunan Province. About a year and a half ago, amazing Ichinokawa-esque pieces started coming out of Jiangxi--and they lacked the striations and wear visible in ...

Stibnite Sb2S3 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic. Point Group: 2/m 2/m 2/m. Slender to stout, complexly terminated crystals, elongated along [001], to 0.65 m; bent crystals not uncommon, rarely twisted. In radiating and confused groups of acicular crystals; also columnar, granular, or very fine masses.

СУРЬМА ( Stibium, Sb; син. Antimonium) — химический элемент VA группы периодической системы Д. И. Менделеева; в медицине соединения сурьмы используют в качестве лекарственных средств. Металлическая С ...

The solubility of stibnite ( Sb(2)S(3)) was measured at 25 degrees C and 1 atmosphere in solutions ranging from 0.45 to 7.16 percent Na(2)S by weight. Sb(2)S(3): Na(2)S mole ratios of saturated solutions range from 0.238 to 0.403. Stibnite solubility increases at an increasing rate with rising Na(2) …

1.1 Modeling antimony (Sb) in hydrothermal fluids . Stibnite (Sb. 2. S. 3) is the most common antimony mineral, and its solubility is a primary control on the concentration of antimony hydrothermal fluids. The ability to predict changes in stibnite solubility and aqueous antimony complexation in response to changes in pH, temperature

To determine the chemical composition and structure, stibnite and Sb 2 S 3 /SCS composites were characterized with X-ray diffraction (XRD). As illustrated in Fig. 1, all the observed peaks for stibnite and Sb 2 S 3 /SCS were indexed to the orthorhombic phase of antimony sulfide (PDF# 65-2432, Pnma (62), a = 1.130 nm, b = 0.383 nm, and c = 1.12 nm).

Stibnite typically forms coarse, irregular masses or radiating sprays of needlelike crystals, but it can also be granular or massive. A widespread mineral, stibnite occurs in hydrothermal veins, hot-spring deposits, and replacement deposits that form at low temperatures (up to 400°F/200°C). ... Antimony trisulfide, Sb2S3. Sb = 71.4 percent, S ...

The kinetics of oxidative dissolution of natural stibnite (Sb 2 S 3) under environmentally relevant conditions is investigated.The effects of hydrogen ion activity (pH 1.08–10.63), dissolved oxygen saturation (p(O 2) from 0 to 80% of atmospheric pressure), and temperature (25–48 °C) on the reaction rate were studied using a mixed flow reactor. . …

Stibnite - Wikipedia

General Stibnite Information : Chemical Formula: Sb2S3 : Composition: Molecular Weight = 339.70 gm Antimony 71.68 % Sb Sulfur 28.32 % S _____ 100.00 % : Empirical Formula: Sb 2 S 3: Environment: Dimorphous with metastibnite, compare bismuthinite, guanajuatite, animonselite. IMA Status: Valid Species (Pre-IMA) 1832 ...

The solubility of stibnite (Sb 2 S 3) was measured at 25°C and 1 atmosphere in solutions ranging from 0.45 to 7.16 percent Na 2 S by weight. Sb 2 S 3: Na 2 S mole ratios of saturated solutions range from 0.238 to 0.403. Stibnite solubility increases at an increasing rate with rising Na 2 S concentration. The reaction that best fits the experimental data is 2Sb 2 S 3 + HS-+ OH-= Sb …

stibnite sbs compounds. The crystal structure of stibnite sbs, pnma, a, b, c, v at k was refined in situ at,, and k it is a major characteristic of the structure that the sbs secondary bonds enclosing sb s inert lonepair electrons at k are significantly shorter than the corresponding sum of the sb and s van der waals radii concerning the

Orthorhombic Sb 2 S 3 (stibnite) and its amorphous Sb 2 S 3 / C composite were synthesized by solid-state routes, such as heat treatment and high energy mechanical milling (HEMM). X-ray diffraction, X-ray photoelectron spectroscopy and high resolution transmission electron microscopy confirmed that the amorphous Sb 2 S 3 / C composite was composed of …

A refined set of atomic coordinates and temperature parameters have been obtained for stibnite, Sb 2 S 3 . This structure contains parallel (Sb 4 S 6 ) n chains, which are linked to form crumpled sheets (two per unit cell). The quinvalent Sb has fivefold coordination in a square pyramid, where the Sb is slightly displaced out of the base center. The trivalent Sb has …

Сурьма - химический элемент с атомным номером 51. Обозначается символом Sb (лат. Stibium). Простое вещество сурьма - полуметалл серебристо-белого цвета с синеватым оттенком, грубозернистого ...