There are far more than two minerals that form rocks. You have to consider that there are about 3800 known minerals found on Earth. However, two minerals that are extremely abundant in continental and oceanic rock are feldspar and quartz.
Rock minerals form from lava, magma or solutions.
The two minerals dissolve in hot water to form solutions are sugar and salt. They will form a homogeneous solution as they completely dissolve in water.
Replacement minerals.
Granite is one example of a rock containing two or more minerals.
Calcite and silica are the two minerals that commonly act as cement in sedimentary rocks. Calcite is a form of calcium carbonate, while silica can be in the form of quartz or chert. These minerals fill the spaces between sedimentary grains, binding them together to form a solid rock.
Quartz and feldspar are two common minerals that form rocks. Quartz is often found in granite while feldspar is found in both granite and basalt.
They are called chemical sedimentary rocks. Rock salt and rock gypsum are two examples.
Chemical sedimentary rock is created by precipitation of minerals out of, or evaporation from, saturated solutions that are high in dissolved minerals. Rock gypsum and rock salt are two examples.
the minerals are olivine and pyroxene ..you're welcome
Rock
Minerals crystallize from a solution.
Hydrothermal vents: Minerals can form when hot water rich in dissolved minerals rises from beneath the Earth's crust and comes into contact with cold seawater. This rapid cooling causes minerals to precipitate and accumulate around the vent openings. Magma chambers: Minerals can also form when molten rock (magma) cools and solidifies underground in magma chambers. As the magma cools, minerals crystallize out from the molten rock and form distinct mineral formations.