Catalogue of the Minerals and Rocks in the Collection of the Australian Museum (Classic Reprint)
Description:... Excerpt from Catalogue of the Minerals and Rocks in the Collection of the Australian Museum Minerals are natural inorganic bodies, possessing definite chemical and physical qualities. About 600 different minerals are at present known; but many of these are of rare occurrence, and, though extremely interesting to science, are without economic import. Select ing those minerals which are remarkable for their wide distribution and at the same time those which are of value, whether rare or frequent, the number which it is advisable for practical miners to know is thus reduced to about Seventy-five; this limited number only will be more fully described.
In distinguishing animals and plants we may be guided by conspicuous difference in form, size, and colour; but in the mineral world these characters are liable to so much variation that they often cease to be distinctive. And in the case of living things the structure of the various organs may differ, thus affording many points of comparison whereas minerals are destitute of organs. All parts of a mineral are alike: the smallest fragment has similar properties to the whole.
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