Quartz is a mineral, not a rock.
Flint is a hard, sedimentary cryptocrystalline form of the mineral quartz.
A group of minerals are called a rock, Quartz isn't a rock, it's a mineral. It has a hardness of around 7, it doesn't have cleavege but has a conchoidal fracture.
The three main rocks found on this planet are sedimentary, igneous, and metamorphic.
The most abundant minerals in granite are potassium feldspar, plagioclase feldspar, and quartz; with differing amounts of muscovite, biotite, and hornblende-type amphiboles. The most abundant minerals in basalt are amphibole and pyroxene, sometimes plagioclase, feldspathoids, and/or olivine. In other words, no.
A metamorphic rock
milky quartz is either metamorphic or igneous
Amethyst is actually a variety of quartz, and as a mineral, is not classified as igneous, metamorphic, or sedimentary as are rocks.
quartz is a mineral, not a rock, so it can't be igneous, sedimentary or metamorphic
yes may be
Onyx is a variety of quartz, usually with a sedimentary origin.
geode, pirite (fools gold), obsidion, quartz
Neither. Quartzite is metamorphosed quartz sandstone, and is therefore a metamorphic rock.
Rose quartz is actually a silicate mineral that may appear in metamorphic, sedimentary, and igneous rocks.
Quartz is a type of clastic rock. It is widely found in igneous, metamorphic, and sedimentary rocks, and is often colored by impurities.
none of the above carnelian is a mineral that is a lot like quartz
Quartz (SiO2) crystallizes from magma that is high in silica, thus most quartz is originally igneous. It then weathers out of igneous rocks as a clast and is deposited in what becomes a sedimentary rock. The original igneous rock or the quartz containing sedimentary rock can then become metamorphosed. Furthermore, quartz can also form out of solution by meteoric water or hydrothermal systems in which case it is a precipitate. It can be both crystalline or amorphous.
None of them. Quartz is a mineral, not a rock type. Quartz could be found among any of the three classifications of rock--igneous, sedimentary, or metamorphic.