Is quartzite foliated or nonfoliated

Answer 1

Quartz is a mineral, not a rock that neither does or does not exhibit foliation (a banding, layering, or alignment of minerals that presents itself in some metamorphic rocks). Quartzite, a rock made almost entirely of quartz, is a non-foliated metamorphic rock.

Answer 2

Folation is a term that applies to metamorphic rocks. Quartz is a single mineral that does not necessarily occur in metamorphic rocks. It can appear in foliated rocks such as gneiss as well as non foliated rocks such as quartzite.

Answer 3

Igneous rock does not normally display banding, layering, or flaky texture. Foliated vs. non-foliated as a descriptive term in rock identification is most often used in reference to metamorphic rock.

Answer 4

It is neither. Foliated and nonfoliated are terms used to describe metamorphic rocks. Obsidian is an igneous rock of volcanic origin.

Answer 5

Quartzite is a non-foliated metamorphic rock.