The deposits of the useful minerals & rocks; their origin, form, and content . SJ! g^ ^?3\ o g -5 250 960 THE NICKEL-SILICATE, OR GARNIERITE DEPOSITS 901 going decomposition, still retains very clearly the character of serpentine,being distinguishable from that rock only by its higher nickel content,which is 1-2 per cent. The white decomposition of the serpentine is independent of, and olderthan the formation of the nickel ore ; kernels of white decomposed serpent-ine are consequently frequently found in the nickel ore and in the redearth, while a more complete replacement of the serpentine ha
The deposits of the useful minerals & rocks; their origin, form, and content . SJ! g^ ^?3\ o g -5 250 960 THE NICKEL-SILICATE, OR GARNIERITE DEPOSITS 901 going decomposition, still retains very clearly the character of serpentine,being distinguishable from that rock only by its higher nickel content,which is 1-2 per cent. The white decomposition of the serpentine is independent of, and olderthan the formation of the nickel ore ; kernels of white decomposed serpent-ine are consequently frequently found in the nickel ore and in the redearth, while a more complete replacement of the serpentine has resulted inthe formation of white patches. Of the characteristic white minerals, thekerolite is apparently younger than the magnesite, which it replaces. Chrysoprase is the younger chalcedony coloured a bright green by thesmall amount of nickel it contains ; in addition, opal and pras-opal alsooccur. These are in part contemporaneous with, and in part older thanthe nickel ore. Saccharite is a white, more seldom grey, mineral aggregate, concerningthe origin of which, opi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
