 The jasper-shale formation consists of beds and lenses of jasper interbedded with fine shale. The jasper may be thin bedded or very heavy bedded, in the latter case forming prominent outcrops. The beds generally strike in the direction of the main jasper...  Bulletin - Page 761918 - 248 pagesFull view - About this book
 | California State Mining Bureau - Gold mines and mining - 1921 - 586 pages
...dt., pp. 162-163. 14-S725 the north. Where the principal manganese ore deposits occur the jasper-shale belt is about a mile wide. The manganese ores extend...jasper interbedded with fine shale. The jasper may be thin bedded or very heavy bedded, in the last case forming prominent outcrops. The beds generally strike... | |
 | Geological Survey (U.S.) - Geology - 1910 - 314 pages
...prinZ FEET FIGURE 30.— Section through the manganese deposit at the Fable mine, California. cipal deposits being to the southeast and very near the...jasper interbedded with fine shale. The jasper may be thin bedded or very heavy bedded, in the latter case forming prominent outcrops. The beds generally... | |
 | Edmund Cecil Harder - Manganese - 1910 - 346 pages
...direction, the prinFIGURE 30.— Section through the manganese deposit at the Fable mine, California. cipal deposits being to the southeast- and very near the...jasper interbedded with fine shale. The jasper may be thin bedded or very heavy bedded, in the latter case forming prominent outcrops. The beds generally... | |
 | Edmund Cecil Harder - Manganese - 1910 - 916 pages
...direction, the prinFIGURE 30.— Section throiiRh the manganese deposit at the Fable mine, California. cipal deposits being to the southeast and very near the,...jasper-shale formation consists of beds and lenses of jasper interbcdded with fine shale. The jasper may be thin bedded or very heavy bedded, in the latter case... | |
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