Economic Mineralogy: A Practical Guide to the Study of Useful Minerals

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Longmans, Green and Company, 1921 - Geology, Economic - 492 pages
 

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Page 69 - Protactinium Radium Radon Rhenium Rhodium Rubidium Ruthenium Samarium Scandium Selenium Silicon Silver Sodium Strontium Sulfur...
Page 69 - Antimony Argon Arsenic Barium Bismuth Boron Bromine Cadmium Caesium Calcium Carbon Cerium Chlorine Chromium Cobalt Columbium Copper...
Page v - The aim of this book is to deal with mineralogy in such a way as to meet the needs of those who wish to restrict their attention to the utilitarian side of the subject.
Page 69 - ... Cerium Cesium Chlorine Chromium Cobalt Columbium Copper Dysprosium Erbium Europium Fluorine Gadolinium Gallium Germanium Gold Hafnium Helium Holmium Hydrogen...
Page 69 - Rn Re Rh Rb Ru Sm Sc Se Si Ag Na Sr S Ta Te Tb Tl Th Tm Sn Ti W U V Xe Yb Y Zn Zr...
Page 305 - This portion of the ore body, which often extends to a depth of 80 feet or more, contains but little or no copper and is therefore of no commercial value, except as an iron ore. Below the gossan is found the black copper zone, which varies from a few inches to a foot or more in thickness...
Page 38 - ... the ratio of the sine of the angle of incidence to the sine of the angle of refraction is the same as the ratio of the respective wave velocities in these mediums, and is a constant for two particular mediums.
Page 68 - The formula of a compound is represented by placing the symbols of the component elements side by side; where more than one atom of the same element occurs in a molecule, the figure expressing this number is written at the right and a little below the corresponding symbol. 25.
Page 7 - After the ample discussion which this case has undergone, and the accurate investigation of every authority upon the subject, it is not necessary to enter into a detailed consideration of the question.

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