Asbestos fibers

•  Amphibole

  Amphibole defines an important group of generally dark-colored rock-forming inosilicate minerals, composed of double chain SiO4 tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures. Amphiboles crystallize into two crystal systems, monoclinic and orthorhombic. In chemical composition and general characteristics they are similar to the pyroxenes.

  

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•  Libby, Montana

  Libby is a city in and the county seat of Lincoln County, Montana, United States. The population was 2,626 at the 2000 census.

  

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•  Eternit

  Eternit is: - a registered trademark for fibre cement. - The name of the manufacturer Eternit-Werke Ludwig Hatschek

  

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•  Actinolite

  Actinolite is an amphibole silicate mineral with the chemical formula Ca25Si8O222.

  

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•  Mesothelioma

  Mesothelioma, more precisely malignant mesothelioma, is a rare form of cancer that develops from the protective lining that covers many of the body's internal organs, the mesothelium. It is almost always caused by exposure to asbestos. Its most common site is the pleura (outer lining of the lungs and internal chest wall), but it may also occur in the peritoneum (the lining of the abdominal cavity), the heart, the pericardium (a sac that surrounds the heart) or tunica vaginalis.

  

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•  Asbestosis

  Asbestosis is a chronic inflammatory and fibrotic medical condition affecting the parenchymal tissue of the lungs caused by the inhalation and retention of asbestos fibers. It usually occurs after high intensity and/or long-term exposure to asbestos (particularly in those individuals working on the production or end-use of products containing asbestos) and is therefore regarded as an occupational lung disease.

  

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•  Chrysotile

  Chrysotile or white asbestos is the most commonly encountered form of asbestos, accounting for approximately 95% of the asbestos in place in the United States and a similar proportion in other countries. It is a soft, fibrous silicate mineral in the serpentine group of phyllosilicates: as such, it is distinct from other asbestiform minerals in the amphibole group. Its idealized chemical formula is Mg34, in which some of the magnesium ions may be replaced by iron or other cations.

  

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•  Tremolite

  Tremolite is a member of the amphibole group of silicate minerals with composition: Ca2Mg5Si8O222. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite. Pure magnesium tremolite is creamy white, but the color grades to dark green with increasing iron content. It has a hardness on Mohs scale of 5 to 6. Nephrite, one of the two minerals of the gemstone jade, is a green variety of tremolite.

  

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•  Riebeckite

  Riebeckite is a sodium-rich member of the amphibole group of minerals, chemical formula Na25Si8O222. It crystallizes in the monoclinic system, usually as long prismatic crystals showing a diamond-shaped cross section, but also in fibrous, bladed, acicular, columnar, and radiating forms. Its Mohs hardness is 5.0–6.0, and its specific gravity is 3.0–3.4. Cleavage is perfect, two directions in the shape of a diamond; fracture is uneven, splintery. It is often translucent to nearly opaque.

  

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•  Cummingtonite

  Cummingtonite is a metamorphic amphibole with the chemical composition7Si8O222, magnesium iron silicate hydroxide. Monoclinic cummingtonite is compositionally similar and polymorphic with orthorhombic anthophyllite, which is a much more common form of magnesium-rich amphibole, the latter being metastable. Cummingtonite shares few compositional similarities with alkali amphiboles such as arfvedsonite, glaucophane-riebeckite.

  

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•  Ural River

  The Ural, known as Yaik before 1775, is a river flowing through Russia and Kazakhstan. It arises in the southern Ural Mountains and ends at the Caspian Sea. Its total length is 1,511 mi (2,428 km). It forms part of the traditional boundary between Europe and Asia.

  

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•  Dominican Church

  Dominican Church is the name of a number of churches belonging to the Dominicans, e.g. : Dominican Church (Vienna), Austria Dominican Church (Krems), Austria Dominican Church (Vác), Hungary Dominican Church (Krakow), Poland Dominican Church (Banská Štiavnica), Slovakia Dominican Church (Košice), Slovakia

  

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•  Palma de Gandía

  Palma de Gandía is a municipality in the comarca of Safor in the Valencian Community, Spain.

  

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•  Diesse (Bern)

  

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•  Defence of India act, 1915

  

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