Georgia, historical and industrial . aleozoicarea in Bartow county, where it has been mined for a number of chief use is in the manufacture of paint as a substitute for whitelead. PKECIOUS STONES. Amethysts of good quality are found in Rabun county. A few dia-monds have been found in Hall county. Rubies and sapphires of smallsize have been obtained in limited numbers in connection with corundummining, and some green beryl suitable for cutting has been found in thenortheast part of the Crystalline area. Some good moonstones have beencut from feldspar from Upson county. COAL. The coal
Georgia, historical and industrial . aleozoicarea in Bartow county, where it has been mined for a number of chief use is in the manufacture of paint as a substitute for whitelead. PKECIOUS STONES. Amethysts of good quality are found in Rabun county. A few dia-monds have been found in Hall county. Rubies and sapphires of smallsize have been obtained in limited numbers in connection with corundummining, and some green beryl suitable for cutting has been found in thenortheast part of the Crystalline area. Some good moonstones have beencut from feldspar from Upson county. COAL. The coal fields of Georgia are in Dade and Walker counties in thePaleozoic area and are a part of the Warrior coal field of Alabama. Thefollowing figures taken from the twentieth report of the United StatesGeological Survey, giving the output in short tons from 1890 to 189Swill give an idea of the extent of the industry. 1890 228,337 1895 280,998 1891 171,000 189G 238,546 1892 215,498 1897 195,869 1893 372,740 1898 244,187 1894 354,111 Q H D. GEORGIA: HISTORICAL AND INDUSTRIAL. (39 Statistics furnished by Dr. Day show an output of 233,111 short tonsin 1899, valued at $233,344. A good per cent, of the coal mined inGeorgia is converted into coke. CLAYS. Throughout that portion of the State north of the fall line (a line fromColumbus through Macon to Augusta) clays occur in situ, derived fromthe feldspathic constituents of the country rocks. At numerous localitiesthese clays are suitable for the manufacture of common brick and thecoarser gi-ades of earthenware. Immediately below the fall line and extending in a narrow belt acrossthe State are to be found, in addition to the clays suitable for the pur-poses mentioned above, extensive deposits of what is technically termedfire clay. This term is used for a clay of comparative purity whichsubjected to heat fuses at relatively high temperatures, and can be usedin the manufacture of burnt products, such as porcelain, enameled brick,china wares,
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