Question

help with question 3 please

Review Questions 1. What are the differences between major, minor, and trace elements? 2. In what components are the chemical analyses of silicates most commonly expressed? 3. Recalculate the following chemical analysis of an alkali feldspar into its formula: SiO, - 65.67, ALO, A. CaO = 0.50, Na, O = 7.59, and K,O= 5.49 weight%. Remember to look up the number of oxygens per form unit for feldspar.

Answer 1

2 Na Alsizog – 6502 + CO Aboz + Nazo Ca Ala Siz Og 2 SiO₂t Azogt cao 2 kalsiz og 6 si Q & Ahogt so