Question:
Considering garnet chemical formula in 12 oxygen basis, the number of Mg cations in a garnet of chemical composition P (as shown in the figure) is (give answer in two decimal places).
Considering garnet chemical formula in 12 oxygen basis, the number of Mg cations in a garnet of chemical composition P (as shown in the figure) is (give answer in two decimal places).
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The number of cations in a mineral can be determined using compositional diagrams and molar proportions.
Updated On: Nov 18, 2025
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Solution and Explanation
Step 1: Understanding the question.
The question asks for the number of Mg cations in garnet of chemical composition P, based on the given diagram and garnet formula.
Step 2: Analyzing the solution.
The point P represents a specific composition in the garnet ternary diagram, which can be used to calculate the number of Mg cations. Using the given diagram and the molar proportions, we calculate the number of Mg cations as 0.50.
Step 3: Conclusion.
The correct answer is 0.50, representing the number of Mg cations in the garnet composition P.
The question asks for the number of Mg cations in garnet of chemical composition P, based on the given diagram and garnet formula.
Step 2: Analyzing the solution.
The point P represents a specific composition in the garnet ternary diagram, which can be used to calculate the number of Mg cations. Using the given diagram and the molar proportions, we calculate the number of Mg cations as 0.50.
Step 3: Conclusion.
The correct answer is 0.50, representing the number of Mg cations in the garnet composition P.
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