Grunerite
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Grunerite is a mineral of the amphibole group of minerals with formula Fe7Si8O222. It is the iron endmember of the grunerite-cummingtonite series. It forms as fibrous, columnar or massive aggregates o
Sprays of small, prismatic grunerite crystals on matrix, field of view 5mm, from Marquette Co., Michigan, US
Scanning electron microscope image of asbestos fibres (grunerite var. amosite)
Asbestos
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Asbestos or asbestus is a group of naturally occurring, fibrous silicate minerals that have been used for thousands of years to create flexible fire-resistant objects, such as fireproof fabrics. It is
Grunerite
…Emmanuel-Louis Gruner (1809–1883), the Swiss-French chemist who first analysed it. Amosite is a rare asbestiform variety of grunerite that was mined as asbestos predominantly in the eastern part of the Transvaal Province of South Africa. The origin of the name is Amosa, the acronym for the mining company "Asbestos…
Industrial scale asbestos mining began in 1878 in Thetford township, Quebec. By 1895, mining was increasingly mechanized.
Canada's biggest power shovel loading an ore train with asbestos at the Jeffrey Mine, Johns-Manville Co., Asbestos, Quebec, June 1944
The applications of asbestos multiplied at the end of the 19th century—this is an advertisement for an asbestos-lined clothes iron from 1906
Asbestos fabric