Question

Table below shows the partial analysis (wt% of oxide) of a deep-sea sediment composed of 
quartz, clay, and carbonates. Calculate the abundance of each mineral phase in this sample. 

Composition of a deep-sea sediment and its mineral phases
oxide sediment   quartz   clay   carbonate
SiO2     45.7         100        51.4       0
Al2O3 13.2              0         26.4       0
CaO    16.5              0            0          55