[lemma=phlogopite] (□ □ | □) □
[lemma=phlogopite] ([□] □ | □) □
[lemma=phlogopite] ((□ | □) □ | □) □
Phlogopite is usually formed metamorphically , but may also develop from plutonic forces . Phlogopite is closely related to , and is often found with , biotite .