Diorite

Rock group Igneous
Classification Intrusive/plutonic
Composition Intermediate
Texture Phaneritic
Extrusive counterpart Andesite
Common minerals Plagioclase feldspar
Biotite
Hornblende
Pyroxene
Quartz

Diorite in Hand Sample

Diorite
Two small samples of diorite
Diorite intruded by granite pegmatite dike

Diorite in Thin Section

Thin Section GigaPans

Diorite in plane polars
Diorite in crossed polars
Another diorite in plane polars
Another diorite in crossed polars

Diorite, plane polars

Diorite, plane polars

Diorite in plane polarized light. Magnification: 40x Click here for crossed polars: Click here to explore this slide in plane polars: https://viewer.gigamacr…

Diorite, crossed polars

Diorite, crossed polars

Diorite in cross polarized light. Magnification: 40x Click here for plane polars: https://youtu.be/6TXLUPiB6uA Click here to explore this slide in plane pola…

Diorite, PPL

Diorite, Plane Polars

Diorite in plane polarized light. Magnification: 40x Click here to see diorite rotating in crossed polars: https://youtu.be/A8SpBXD1c9g Click here to explore…

Diorite, XPL

Diorite, Crossed Polars

Diorite in cross polarized light. Magnification: 40x Click here to see diorite rotating in plane polars: https://youtu.be/HAt6wFmHN7M Click here to explore t…