 | American Philosophical Society - 1873 - 550 Seiten
...acres and the strata developed there are, according to Prof. Shepard (loc. cit.) : " 1. Chrysolite rock, somewhat mixed with anthophyllite ; 2. a layer...(ripidolite); 5. the same through which the corundum is irregularly diffused, sometimes in narrow veins or widening out to several feet." *FA Genth— Sill.... | |
 | 1872 - 1060 Seiten
...45°, and exhibit the following order of formations, commencing on the NW side of the opening : — 1, chrysolitic rock somewhat mixed with anthophyllite...(ripidolite) ; 5, the same, through which the corundum is irregularly diffused, sometimes in narrow veins or widening out to several feet The chloritic layers... | |
 | 1872 - 536 Seiten
...45°, and exhibit the following order of formations, commencing on the NW side of the opening : — lt chrysolitic rock somewhat mixed with anthophyllite...(ripidolite) ; 5, the same, through which the corundum is irregularly diffused, sometimes in narrow veins or widening out to several feet The chloritic layers... | |
 | American Philosophical Society - 1873 - 548 Seiten
...cit.) : " 1. Chrysolite rock, somewhat mixed with authophyllite ; 2. a layer of micaceous rock ; ;!. a seam of chalcedony ; 4. a stratum of chloritic rock...(ripidolite); 5. the same through which the corundum is irregularly diffused, sometimes in narrow veins or widening out to several feet." •FA Couth— Sill.... | |
 | American Philosophical Society - 1873 - 560 Seiten
...according to Prof. Shepard (loc. cit.) : " 1. Chrysolite rock, somewhat mixed with authophyllite ; 2. a layer of micaceous rock ; 3. a seam of chalcedony ; 4. a stratum of chloride rock (ripidolite); 5. the same through which the corundum is irregularly diffused, sometimes... | |
 | National Academy of Sciences (U.S.) - 1895 - 712 Seiten
...are there developed, according to CU Shepard. being (1) chrysolite rock mixed with anthophyllite, (2) micaceous rock, (3) a seam of chalcedony, (4) a stratum of chloritic rock (ripidolite), and (5) a similar layer through which the corundum is irregularly diffused. According to .T. Willcox,... | |
 | 1905 - 918 Seiten
...origin of this mineral, they do not take up any discussion of the problem. In 1872, Mr. CV Shepard/ in an extended article on the corundum of North Carolina...of micaceous rock; (3) a seam of chalcedony; (4) a • Man. of Oeol. India, Economic Geol., pt. 1, 1898, and Mem. Oeol. Survey India, vol. 30, pt. 3,... | |
 | Joseph Hyde Pratt - 1906 - 250 Seiten
...origin of this mineral, they do not take up any discussion of the problem. In 1872, Mr. CU Shepard/ in an extended article on the corundum of North Carolina...of micaceous rock; (3) a seam of chalcedony; (4) a " Man. of Geol. India, Economic Geol., pt. 1, 1898, and Mem. Geol. Survey India, vol. 30, pt. 3, 1901.... | |
 | Joseph Hyde Pratt - 1906 - 224 Seiten
...origin of this mineral, they do not take up any discussion of the problem. In 1872, Mr. CU Shepard/ in an extended article on the corundum of North Carolina...and what he calls the development of the " strata," wyhich " exhibit the following order of formations: (1) Chrysolitic rock somewhat mixed with anthophyllite;... | |
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... which exhibit the following order of formations: " (1) Chrysolitic rock somewhat mixed with anthophyllite ; (2) a layer of micaceous rock; (3) a seam of chalcedony; (4) a stratum of chloritic rock (ripidolite) ; (5) the same through which the corundum... 