Aplite

Aplite
Aplite (fine-grained center)
Composition
Quartz, feldspar

Aplite (/ˈæplaɪt/) is an intrusive igneous rock that has a granitic composition. Aplites are fine-grained to aphanitic (without grains visible to the naked eye) and may consist of only quartz and feldspar or the term may refer to any leucocratic (pale-coloured) minor intrusion of that grain size. They are associated with the later stages of many larger intermediate to felsic intrusions.

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