PPT Slide
Continental Crust
Element Wt% Size Packing
Oxygen - O 47 % 1.4A Framework
Silicon - Si 28% .4A 4 fold
Aluminum- Al 8% .5A 4,6 fold
Iron - Fe 5% .72A 6 fold
Calcium - Ca 4% 1.0A 8 fold
Sodium - Na 3% 1.0A 8 fold
Potassium - K 2.5% 1.4A 8 fold
Magnesium - Mg 2.1% .65A 6 fold
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