Riebeckite
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Riebeckite is a sodium-rich member of the amphibole group of silicate minerals. It has chemical formula Na2Si8O222. It forms a solid solution series with magnesioriebeckite, where Mg substitutes for F
Black riebeckite in an alkaline pegmatite from Lindinosa near Évisa, Corsica, France
Crocidolite, variety of riebeckite, from Pomfret Mine, Vryburg, South Africa
Kent (cigarette)
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Kent is an American brand of cigarettes, currently owned and manufactured by R.J. Reynolds Tobacco Company in the United States and British American Tobacco elsewhere. The brand is named after Herbert
Riebeckite
…Crocidolite asbestos was mined in South Africa, Bolivia, and Wittenoom, Western Australia. Bolivian crocidolite was used in approximately 13 billion Kent Micronite cigarette filters, manufactured from March 1952 until at least May 1956 by the Lorillard Tobacco Company (now part of the R. J. Reynolds…
An old pack of Kent Ultras from South Africa