Gniess is mainly mined for use in construction--building slabs, countertops, stone facings.
Metamorphic.
Gniess
Gneiss is a type of metamorphic rock. It is usually grey or pink toned with the look of dark layering or streaking. It is considered medium to coarse grained.
it is formed from aouther rock called schist
Gneiss is a metamorphic rock which exhibits foliation (a layered effect). The layers of gneiss are alternating light and dark layers. Usually the lighter layers are rich in quartz and feldspar and the darker layers are rich in biotite mica, hornblende, or tourmaline.
River rock can be composed of any rock type, or any combination of rock types.
Metamorphic.
Gniess
Yes. Gneiss is a foliated metamorphic rock.
metamorphic
Gneiss is generally coarse-grained.
because of the minerals that are mixed in with the gniess during the rock cycle(probably at the igneous stage) reflect light off of themselves
Gneiss is a type of metamorphic rock. It is usually grey or pink toned with the look of dark layering or streaking. It is considered medium to coarse grained.
it is formed from aouther rock called schist
gniess is made of granite
Gniess is Metamorphic.
Examples of metamorphic rock include:SlateGneissSkarnPhylliteAmphiboliteSchistQuartziteMarbleGranuliteBlueschistSueviteEclogiteSerpentiniteGossanPsammitePeliteGreenschistMigmatiteMyloniteHornfels
Granite must be exposed to tremendous heat and pressures in order to transform into the metamorphic rock gneiss.