Grunerite is a mineral of the amphibole group of minerals with formula Fe 7 Si 8 O 22 2. It is the iron endmember of the grunerite-cummingtonite series. It forms as fibrous, columnar or …

Jan 7, 2025 · In its natural state, amosite is known as grunerite. It was mainly mined in South Africa. The name “amosite” comes from the acronym for the Asbestos Mines of South Africa. …

Jan 7, 2023 · Grunerite (commonly known as Amosite Asbestos) This type of asbestos is also known as brown asbestos and is regarded as one of the most hazardous types due to the …

May 2, 2023 · Amosite asbestos, also known as “brown asbestos” and grunerite, is a type of amphibole asbestos. The amphibole class of asbestos have straight, needle-like fibres that …

For example, the strength of grunerite crystals is approximately 1,000 kg/cm 2, whereas the strength of asbestiform grunerite (also called amosite) may reach 40,000 kg/cm 2. Whiskers …

The best evidence for the pathogenicity of grunerite asbestos has come from epidemiological studies of workers in factories where predominantly this fiber type was used. The mortality …

These fibers belong to two mineral groups: serpentines and amphiboles. The serpentine group contains a single asbestiform variety: chrysotile; five asbestiform varieties of amphiboles are …

Nov 26, 2024 · Amosite is distinct due to its coarse, straight fibres, which differ from the curly (serpentine) fibres of Chrysotile, which is the most common type of asbestos. Amosite’s fibres …

Care should be taken working with samples that contain fibrous forms of this mineral, to avoid creating or inhaling dusts. Non-fibrous forms, such as in many amphibolites, are safer to …

Oct 15, 2017 · Investigated fibres are A B Na 2C (Fe 2+2.5 Mg 0.5) C Fe 3+2T Si 8 O 22W (OH) 2 Riebeckitic amphiboles. Textures of fibres are quantified by image analysis on SEM micro …