 ... the latter case forming prominent outcrops. The beds generally strike in the direction of the main jasper belt, but the dips are exceedingly irregular. The manganese ore occurs along heavy jasper beds as large masses replacing it, as veins, or merely...  Bulletin - Page 761918 - 248 pagesFull view - About this book
 | California State Mining Bureau - Gold mines and mining - 1921 - 586 pages
...as large masses replacing it, as veins, or merely as stains and partial replacements along cracks. The principal deposits, that is, those at the southeast...prominent jasper beds 300 to 500 yards long, which are nearly parallel and 50 to 200 feet apart, separated by thin bedded jasper and shale. Of these,... | |
 | Geological Survey (U.S.) - Geology - 1910 - 314 pages
...as large masses replacing it, as veins, or merely as stains and partial replacements along cracks. The principal deposits — that is, those at the southeast...prominent jasper beds 300 to 500 yards long, which are nearly parallel and 50 to 200 feet apart, separated by thin-bedded jasper and shale. Of these the... | |
 | Edmund Cecil Harder - Manganese - 1910 - 346 pages
...as large masses replacing it, as veins, or merely as stains and partial replacements along cracks. The principal deposits — that is, those at the southeast...prominent jasper beds 300 to 500 yards long, which are nearly parallel and 50 to 200 feet apart, separated by thin-bedded jasper and shale. Of these the... | |
 | Edmund Cecil Harder - Manganese - 1910 - 916 pages
...as large masses replacing it, as veins, or merely as stains and partial replacements along cracks. The principal deposits — that is, those at the southeast...along two or three prominent jasper beds 300 to 500 3'ards long, which are nearly parallel and 50 to 200 feet apart, separated by thin-bedded jasper and... | |
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