| | (carboniferous) | | ================+===================+=====================+=========+ ================+============+===========+==========================+ Mines. | Dip. | Width. | Matrix. | ----------------+------------+-----------+--------------------------+ NAGHUILA |50° N.E. |1½ ft. |Crystalline quartz | EUREKA |35°-40° N.E.| |Quartz | PLEITEADA |45° N.E. |1½ ft. |Quartz | SAN JUAN |50° S.S.E. |4 ft. |Quartz and iron ore | CEBALLOS |85° S.S.E. |2 ft. |Magnetic iron | HIGUERA |80° E. |2½ ft. |Magnetic iron | LA BLANCA |15° E. | |Vesicular quartz | SAN LUIS |35° N.E. |1½ ft. |Decomp. quartz and | | | | sulfate of baryta | SANTA BARBARA |30° S.E. |1½ ft. |Quartz | LA SIERRA |80° N.N.W. |3 ft. |Magnetic iron | SAN JOSÉ | |1½ ft. |Sulphate of baryta | EL SECORRO | | | | ZARAGOZA | | |Magnetic iron | SAN LUIS GONZAGA|30°-40° N.E.|8 inches |White quartz | LA COLORADA |80° S. |5 ft. |Iron ore and quartz | AGUAJITO | | |Magnetic iron | SANTA EDUBIGEN |30° N.W. |2½ ft. |Quartz | LA CUADRA |20°-25° E. |1 ft. |Quartz | EL ROSARIO |20°-25° E. | |Crystalline quartz | EL ESCRITORIO |N.E. |1½ ft. |White quartz | SANTA ROSA |55° S. |3 ft. |Quartz and iron ore | SOLEDAD |85° S.E. |30 ft. |Quartz | CARMEN |85° N. |28 ft. |Quartz | ATOCHA |85° N. |14 ft. |Quartz | ROSARIO |70°-80° N.W.|17 ft. | | CONTRESTACA |76° N.W. | |White quartz | DESCUBRIDORA |69° N.W. | |White quartz | SOLEDAD |Perp. | |White quartz | CANDELARIA |63° N.N.W. | |White quartz | BOLANOS |75° S.E. |20 ft. |White quartz | CINCO DE MAYO |75° N.W. |4 ft. |White quartz | CINCO SEÑORES |45° E.N.E. |1 to 4 ft. |Quartz | NAPOLEON |80° E. |2 to 8 ft. |Chalcedonic quartz | ROSARIO |85° E. | |Chalcedonic quartz | PATINO |Perp.