What kind of a mineral is garnet?

Question

is it metamorphic, igneous, or sedimentary?

Answer 1

Garnet is a complex silicate mineral, but its often found in metamorphic rocks such as garnet schist. Occassionally it turns up in igneous rocks like the Shap granite in the UK or the Spruce Pine pegmatite in NC USA.

Answer 2

It is mostly metamorphic, sometimes igneous and never sedimentary.
Garnets have a general formula R''3R'''2Si3O12, where R'' can be Fe'', Mg, Mn'' and Ca, R''' can be Fe''', Al or Cr. The Common garnets are Pyrope(MgAl), Almandine (Fe''Al), Spessartite (Mn''Al), Uvarovite (CaCr), Grossularite (CaAl) and Andradite(CaFe''').
Almandine is characteristic of medium to high grade regionally metamorphosed pelitic rocks. But being a resistant mineral, detrital garnet grains may be found in sediments.
Grossularite and Andradite are characteristic of metamorphosed impure limestone.
Pyrope is an essential constituent of Eclogites (high grade metamorphic) and certain ultrabasic rocks (igneous).
Garnets are also sometimes found in granites and pegmatites and in a wide variety of lavas and pyroclastics.
Hydrogrossularite is a common garnet in skarns.

Answer 3

A garnet is a mineral. Igneous, sedimentary, and metamorphic describe rocks, not minerals. So a garnet is none of these.

Answer 4

Garnets are minerals commonly found in metamorphic rocks, specifically, hydrothermal metamorphic rocks. Skarns commonly produce garnets, as does mineral reorganization from regional metamorphism.

Answer 5

igneous