What is the rock gneiss?

Answer 1

The word "granite" comes from the Latin "granum", meaning "grain" in reference to its course granular structure.

Granite is normally a light-coloured igneous rock with grains large enough to be visible with the naked eye. It is formed by the slow crystallization of magma below Earth's surface. Granite is composed mainly of quartz and feldspar with smaller amounts of mica, amphiboles and other minerals found in the area of its origin.

Answer 2

This question is not answerable, because crystalline structure is a property of solid pure chemical substances; the chemical substances that make up rocks are called minerals. So only minerals have definitive crystal properties. Rocks like gneiss are mixtures of different minerals. So there is no such thing as a "gneiss crystal".

Gneiss is a metamorphic rock whose minerals are organized into characteristic bands.

Answer 3

Gneiss is a type of high-grade metamorphic rock characterized by alternating bands of minerals, typically quartz, feldspar, and mica. It forms from the metamorphism of existing rocks under high temperature and pressure conditions. Gneiss is often recognized for its distinct foliation and banding patterns.

Answer 4

A Gneiss rock is a rock that is gray to white in color and is usually coarse textured with parallel bands of minerals.

Answer 5

Gneiss is a high grade metamorphic rock whose characteristic banding of light and dark minerals is called "gneissic" layering.

Answer 6

They have feldspar, mica, and quartz minerals in them. They are made when the Sedimentary rocks are under extreme heat and pressure. That's when they Metamorphose.

Answer 7

gneiss is a metamorphic rock

Answer 8

Foliated