4.) The following data were obtained for three minerals from a granite: Mineral #7Rb/St 7St/St muscovite biotite K-feldspar 409.85 254.75 4.69 1.4125 1.1400 0.7502 Calculate the ages of each of these minerals by assuming an initial *75r/Sr value of 0.7040, and X-1.42 x 10¹¹/yr.

4.) The following data were obtained for three minerals from a granite: Mineral #7Rb/St 7St/St muscovite biotite K-feldspar 409.85 254.75 4.69 1.4125 1.1400 0.7502 Calculate the ages of each of these minerals by assuming an initial *75r/Sr value of 0.7040, and X-1.42 x 10¹¹/yr.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Refining of Crude Metal

Metallurgy could be defined as a technique by which metals can be extracted in their pure nature. Extractive metallurgy directs with the route of eradicating the valuable metals from ores and purifying the extracted metals to pure nature. In hydrometallurgy, the metal extraction’s from their ores is done using an aqueous solution. In the pyrometallurgical process, high temperatures are employed to initiate the reactions between gases, molten metals, and solids. In electrometallurgy, the technique is carried in an electrolytic cell.

Question

87^Sr/86^Sr

4.) The following data were obtained for three minerals from a granite:
Mineral
57 Rb/St
37St/86 St
muscovite
biotite
K-feldspar
409.85
254.75
4.69
1.4125
1.1400
0.7502
Calculate the ages of each of these minerals by assuming an initial Sr/Sr value of 0.7040, and λ=1.42 x 10¹¹/yr.

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