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The three most well-known minerals of tourmaline are: Elbaite                Na(LiAl2)Al6Si6O18(BO3)3(OH)4 Schorl                  Na(Fe3)Al6(BO3)3Si6O18(OH)4 Dravite                Na(Mg3)Al6(BO3)3Si6O18(OH)4   On a basis of 1000 kg of tourmaline rocks containing 25% Elbaite, 35% Schorl, 30% Dravite and 10% inerts, calculate the following: a)           kg Fe b)           total kg-atom O and kg-mol O2 in the three minerals c)           total number of Mg atoms in the rocks

The three most well-known minerals of tourmaline are: Elbaite                Na(LiAl2)Al6Si6O18(BO3)3(OH)4 Schorl                  Na(Fe3)Al6(BO3)3Si6O18(OH)4 Dravite                Na(Mg3)Al6(BO3)3Si6O18(OH)4   On a basis of 1000 kg of tourmaline rocks containing 25% Elbaite, 35% Schorl, 30% Dravite and 10% inerts, calculate the following: a)           kg Fe b)           total kg-atom O and kg-mol O2 in the three minerals c)           total number of Mg atoms in the rocks

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter21: Chemistry Of The Nonmetals
Section: Chapter Questions
Problem 72QAP
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Tourmaline is the most colorful of all gemstones. It neutralizes negative forces and offers emotional stability. It is crystalline boron silicates compounded with metals such as Mg, Fe, Al, Na and Li.  The three most well-known minerals of tourmaline are:

Elbaite                Na(LiAl2)Al6Si6O18(BO3)3(OH)4

Schorl                  Na(Fe3)Al6(BO3)3Si6O18(OH)4

Dravite                Na(Mg3)Al6(BO3)3Si6O18(OH)4

 

On a basis of 1000 kg of tourmaline rocks containing 25% Elbaite, 35% Schorl, 30% Dravite and 10% inerts, calculate the following:

a)           kg Fe

b)           total kg-atom O and kg-mol O2 in the three minerals

c)           total number of Mg atoms in the rocks

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