WebThe form of asbestos in Libby’s contaminated vermiculite has been characterized as belonging to the amphibole (double-chain silicate) mineral group, including both regulated (tremolite) and unregulated (primarily winchite and richterite) fibers (Meeker et al., 2003). These various fibers within Libby amphibole asbestos differ in their ... WebMicroprobe characterization of the material from Libby, MT, indicates the mineral has an average percent composition of 56.8 SiO 2, 1.9 FeO, ... Actinolite is an Al-poor amphibole; it contains mainly tremolite. Actinolite is green in hand specimen and colourless to pale green under the microscope. Plagioclase is pure albite and contains no Ca.
Case‐fatality study of workers and residents with …
WebLibby, Montana by the author (MEG) in October 1999. The UI tremolite sample was selected to represent a non-fibrous amphibole and to obtain data on cleav-age fragments. The NIST tremolite was selected for a comparison to the Libby amphiboles. In general, tremolite samples were selected because the amphib-oles from Libby had been … WebWylie A G, Verkouteren J R (2000) Amphibole asbestos from Libby, Montana: Aspects of nomenclature, American Mineralogist, 85, 1540-1542 Zaitsev A N, Chakhmouradian A R (2002) Calcite – amphibole – clinopyroxene rock from the Afrikanda Complex, Kola Peninsula, Russia: mineralogy and a possible link to carbonatites. II. ghost of the coast
Vermiculite and Libby - Lincoln County Asbestos Resource Program
Web01. nov 2024. · Fibrous amphibole asbestos from Libby (LAA) is composed of winchite (70%), richterite (9%), tremolite (5%), and non-amphibole minerals (16%) with a mean aspect ratio of 8.4 ± 0.7. C57BL/6 mice were exposed by oropharyngeal aspiration to fiber suspensions at a very low dose of 3 μg/mouse. WebThe composition of the Libby amphiboles indicated the presence of both regulated (tremolite) and unregulated (primarily winchite and richterite) fibers , with the majority of the samples displaying morphologies between prismatic crystals and asbestiform fibers. These various fibers within Libby amphibole amphibole differ in their relative... WebAbstract. The physical properties of different types of asbestos may strongly affect health outcomes in exposed individuals. This study was designed to provide understanding of the comparative toxicity of naturally occurring asbestos (NOA) fibers including Libby amphibole (LA), Sumas Mountain chrysotile (SM), El Dorado tremolite (ED), and Ontario … frontline inchicore