Here's a breakdown:

* Continental Crust: Dominated by felsic rocks, rich in silica (SiO2), aluminum (Al), and other elements. The most common minerals are quartz, feldspar, and mica.

* Oceanic Crust: Primarily made up of mafic rocks, which are richer in magnesium (Mg) and iron (Fe) than silica. The most abundant minerals are pyroxene, olivine, and plagioclase feldspar.

While silicate minerals are the primary component, both crust types also contain smaller amounts of other minerals, including:

* Oxides: Like iron oxides (hematite, magnetite) and titanium oxides (ilmenite, rutile)

* Sulfides: Like pyrite (fool's gold)

* Carbonates: Like calcite and dolomite

* Other trace minerals: In varying amounts depending on the specific location and geological processes.

So, while the exact composition varies, the dominant component of both continental and oceanic crust is silicate minerals.