Transactions . Wash. Acad. Sci. (Apr. 4, 1917) 7,196-198. •^ E. T. Wherry: Clay Derived from Volcanic Dust in the Pierre in South Wash. Acad. Sci. (Nov. 19, 1917) 7, 576-583. EUNKST F. lUJUCHAUD 01 Ilic cxidiiicc tlicivfori; points to ii volcanic origin of ihv^c beddedniatorials. probably to the deposition of the volcanic materials directlyinto shallow water; in some places these mingleil with unconsolidatedcalcareous sediments, and in others they overlay Ihuestone and othersedimentary beds already formed and in turn were overlain by otherterrestrial sediments. Deposits in Oriente
Transactions . Wash. Acad. Sci. (Apr. 4, 1917) 7,196-198. •^ E. T. Wherry: Clay Derived from Volcanic Dust in the Pierre in South Wash. Acad. Sci. (Nov. 19, 1917) 7, 576-583. EUNKST F. lUJUCHAUD 01 Ilic cxidiiicc tlicivfori; points to ii volcanic origin of ihv^c beddedniatorials. probably to the deposition of the volcanic materials directlyinto shallow water; in some places these mingleil with unconsolidatedcalcareous sediments, and in others they overlay Ihuestone and othersedimentary beds already formed and in turn were overlain by otherterrestrial sediments. Deposits in Oriente Province Representative Mines and Prospects in District Near Santiago The deposits of manganese ore examined in the Santiago district com-prise the Ponupo group, the Ysabehta, Botsford, Boston, Pilar, Dolores,Laura, San Andreas, Cauto (Abundancia), Llave, and Gloria mines, andthe Caridad and Valle prospects. All these properties, except the twoprospects, were produ(dng ore. A few small producing mines in the. Fig. o.—, Cuba, Dolores mine. Folded tuffaceous sandy man- GAXIFEROUS STRATA 0%^RLYIXG MASSES OF JASPER. DrIFT IN POCKET OF IN CREVICE IN JASPER. district were not visited. The Ponupo, Ysabelita, and Boston mineswere opened many years ago and have produced a large quantity of Ponupo and Ysabelita are still relatively large producers, thoughthe grade of ore is not so high as in the earlier days. Dolores Mine.—^The Dolores mine is situated at Laura station onthe Guantanamo & Western Railroad about 13^ mi. ( km.) west ofSabanilla and is operated by the Campania Oriental de Minas, of Havanaand Santiago de Cuba. The manganese-ore deposits lie near the base ofthe south slope of a gently rising hill at a barometric altitude of between425 and 475 ft. (129 and 144 m.) ^Masses of jasper are exposed in someof the upper cuts, but the local rock is mainly a fine-grained, greenish, 62 MANGANESE-ORE DEPOSITS IN CUBA tliiii betldetl saiidstuiio (l
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
