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本文介紹的方法是北京地質学院河北地質队太行山十一分队的集体創作,笔者只是资枓的整理者。在野外不具备化驗条件的情況下,用这个方法求磁铁矿的品位含量具有其独特的优点。因为这个方法設备簡单,只要有秤、永久性磁鉄和簡单的矿石碾碎机就行了,不需任何化学藥品。但这个方法只限于磁銖矿方能应用,其他的鉄矿都不能用。这个方法是根据:純磁铁矿含Fe72.4％,当矿石原始重量为Q、磁铁矿石中純磁铁矿的重量百分比为P时,則矿石品位(e)=P×72.4％。具体作法是:秤50克矿石(Q),碾碎成粉末撒在紙上,用薄烟紙将永久性磁铁裹上,在紙面上均匀地移动,等吸上大量矿石粉末后,即将此磁鉄移至另一干净紙上,並将烟紙取下,这样铁矿粉便落在干净紙 相似文献
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親愛的同志們: 請允許我向你們——新中國年青的水文工作者致以熱烈的祝賀,你們通過短期學習,將要作爲一支新的水文大軍,投入新中國的水利建設事業中去。 水文局請我向大家作一個報告,當然,我的 相似文献
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THE YUHUATAI GRAVEL AND ITS PHYSIOGRAPHIC SIGNIFICANCE 总被引：1，自引：0，他引：1
A few li outside of the southern gate of Nanking is located a famous scenic point, the Yuhuatai, a flat hill well-known for the occurrence of a great number of beautifully banded agate pebbles, much used for ornamental 相似文献
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INTRODUCTION That there are close relations between Orogenesis,Vulkanism andformation of metallic deposits is unanimously accepted by geologists.Amongthe different metallogenetic epochs in China,the late Mesozoic and earlyTertiary periods seems to have given the most important and at the same timethe most varied metallization.It is remarkable to see that it is also during 相似文献
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The geology of the north Shensi basin has been studied to some detail bythe American geologists Fuller,Clapp and others~1 in an oil exploration partysent out in 1914 under the joint auspices of the Chinese National Oil Administra- 相似文献
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Through the studies of Richthofen in Szechuan and Kiangsu, Deprat and Munsuy in Eastern Yunnan, and Brown & Read in Western Yunnan, the Silurian rock of South China has been known to be of wide occurrence. The classic region, however, is found in the district of Kiao Tchang Pa 相似文献