. Transactions. Asbestos atid its Production in Canada. 345 ?. z/ 346 The Canadian Mining Institute. Silica Magnesia Ferrous Oxide ItalianFibre. Canadian Fibre. Thetford. Broughton 43-37 .87 39-05 13-55 Alumina Water Totals Mineralogically and genetically we distinguish two particulargroups or forms of asbestos : 1. Hornblende asbestos. 2. Serpentine asbestos (of the mines). The first form is so called because it forms one of the varieties ofhornblende in the amphibole series. Among the latter may be men-tioned acti

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. Transactions. Asbestos atid its Production in Canada. 345 ?. z/ 346 The Canadian Mining Institute. Silica Magnesia Ferrous Oxide ItalianFibre. Canadian Fibre. Thetford. Broughton 43-37 .87 39-05 13-55 Alumina Water Totals Mineralogically and genetically we distinguish two particulargroups or forms of asbestos : 1. Hornblende asbestos. 2. Serpentine asbestos (of the mines). The first form is so called because it forms one of the varieties ofhornblende in the amphibole series. Among the latter may be men-tioned actinolite (radiated) and tremolite, which are also known asamianthus or hypsolite when of fine fibrous structure. The color ofamphibole asbestos varies greatly, but the more common is whitish-gray or green. Especially during the period 1897-1900 has the great distributionof this mineral over the whole surface of the earth been consequence of the high value of commercial asbestos it has beenprospected all over the Although reports of finds

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