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GEOLOGY OF PART OF CUBA. 217 
65° to S., of very promising character; the outcrop ore being the richest in the district.* 
Three feet thick in the shaft, at forty-six feet depth. 
Prosperidad,—Santa Isabel,—San Nicholas.—Separate lodes included in the last de- 
nouncement. 
Perseverancia.—An American denouncement. <A shaft on the lode gave good ore at 
fifty feet depth.t A second lode is included in this area. 
Buena Isabela.—Twelve miles from the Embarcadero. Course E. N. E., along a 
ridge. A thousand feet of work done in shafts and levels. Three feet thick of solid ore, 
at ninety feet depth, raised in masses of fifty and one hundred pounds weight; and one 
mass of three hundred and eight pounds, part of a block of more than a thousand weight.t 
Two smaller lodes occur near. A Philadelphia concern. 
Loma de los tibis —Opposite to Cerro alto. But little work done here. 
Sabana Vieja.—An American and English undertaking. Possession given by the 
governor in 1836. It is twelve miles from the Embarcadero, which is one and a half 
mile from Gibara Bay, and four and a half to the point or town. Eight copper lodes 
have been defined within this denouncement; and four others are but partially traced. 
Course of the lodes, with slight variations, N. 56° E., dipping 60° to 70° to S. In some 
places the outcrop of lode No. 1, is twenty feet and at another point is thirty feet wide.§ 
No. 2, is six feet between the walls, good bronze-coloured sulphuret. No. 5, lode four 
or five feet between the walls—rich carbonate, silicate and red oxide or tile ore, in masses 
attaining to seven hundred pounds weight. 
Traces of other copper lodes occur at Loma larga, Higal, Loma larga de la Palma, 
Liavason, Sao Rabon, Saoito de los Ranchos, and several other places. 
Chrome Ore—Occurs in prolonged masses, rather than in veins, in several places in 
the serpentine region; generally in connexion with copper lodes. A large quantity of 
this ore has recently been mined and shipped to Baltimore; and some has been manufac- 
tured on trial in Philadelphia. These metalliferous beds occur on both sides of the third 
limestone chain. 
Iron Ore.—At Rabon a very large vein of compact black iron ore. 
Magnetic Iron Sand.—Abundant at Loma larga. 
GOLD. 
Auriferous sands and beds.—The quartzose rocks, the quartz veins, the alluvium, and 
the river sands, around the City of Holguin, have long been known to contain gold, 
* Four assays, T’. G. C.—34.00—23.30—51.60—34.70—16.40—per ct. of copper. One assay J. G. T.—27.54 per ct. 
+ Ore at bottom of the shaft 26.40—per cent.—T. G. C. Copper. 
t Six assays, T. G. C.—15.50—14.80—7.10—22.40—27.20—9.40—and six per cent. (S.) 
§ Seven assays of lode No. 1.—T. G. C.—8.20—10.80—11.50—20.00—25.40—37.64—32.00 per cent. 
Four assays of lode No, 2.—36.50—39.50—16.40—9.20—per cent. copper. 
Hight other assays of No. 2.—T. G. C.—14.20—5.70—15.40—17.50—13.00—14.90—23.30 and 13.50 per cent. 
Five assays of lode No. 5.—T. G. C.—22.80—34.00—25.40—18.20—20.00 per cent. 
Lode No. 7.—T. G. C,—13.20 per cent. Another lode—19.40 per cent. 
VOL. IxX.—58 
