depending on the texture
The Acasta Gneiss, a metamorphic rock, is 3.96 billion of years old.
The chemical symbol for gneiss is not a standard concept, as gneiss is a type of metamorphic rock composed of minerals like quartz, feldspar, and mica. Each mineral in gneiss has its own chemical symbol (e.g. SiO2 for quartz), but gneiss as a whole does not have a specific chemical symbol.
Gneiss, if the heat and pressure are sufficient.
A Gneiss is a Metamorphic rock
Gneiss is foliated.
Gneiss is foliated and coarse grained
Gneiss is a rock, not a mineral.
No, gneiss is metamorphic.
Gneiss is a part of the earths lower crust. No matter where you drill you will eventually uncover gneiss.
No. Phyllite can metamorphose into schist and then into gneiss.
Yes, gneiss will split with a hammer.
No. Gneiss is a metamorphic rock.