Report of the State Mineralogist . containing an abundance of shells. Theanalysis of the marl is given as follows: (Authority, advertising matter.) Silica -- x AlumiDa Iron oxide 1 - Magnesia ! Calcium carbonate 186 MINES AND MINERAL RESOURCES. This marl pulverizes readily, and is said to be an excellent fertilizer,for which use it is quarried. As this material is very soft, it is easilydug out with pick and shovel, only occasional drilling and blasting beingnecessary. The marl is pulverized in a Williams Patent Crusher andPulverizer, which has a capacity of 2
Report of the State Mineralogist . containing an abundance of shells. Theanalysis of the marl is given as follows: (Authority, advertising matter.) Silica -- x AlumiDa Iron oxide 1 - Magnesia ! Calcium carbonate 186 MINES AND MINERAL RESOURCES. This marl pulverizes readily, and is said to be an excellent fertilizer,for which use it is quarried. As this material is very soft, it is easilydug out with pick and shovel, only occasional drilling and blasting beingnecessary. The marl is pulverized in a Williams Patent Crusher andPulverizer, which has a capacity of 2 tons per hour, and is operated bya small electric motor. This crusher is a very efficient machine as it doesnot become clogged when the material is slightly moist. The productis sacked at the quarry and hauled by team to Edenvale, from where itis shipped to the consumers. This industry, established in 1915, has apromising future, as the demand for the fertilizer is steadily men are employed during the dry Photo No. 14. Quarry of Bernals California Marl Fertilizer Company, nine miles south of San Jose. A few years ago, several thousand tons of the hard gray crystallinelimestone was quarried under lease by the Spreckels Sugar Company,for use at their refinery, but none of this material is at present quarried. MAGNESITE. Magnesite deposits occur in many serpentine areas in the eastern partof the county, the largest and best grade deposits thus far uncoveredbeing those at Red Mountain, in the northeastern corner of the county,now being mined by the Standard Magnesite Company and the WesternMagnesite Development Company. These deposits have long beenknown, and many attempts made to develop them, but their great dis-tance from the railroad and the uncertainty of a market delayed their SANTA CLARA COUNTY. 187 exploitation; and it is only within the past decade that they have beenput upon a producing basis. A number of outcrops of magnesite occur at irregular
Size: 1793px × 1394px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectminesandmineralresou
