( Zircon ( ( is ( a ( common ( accessory ( to ( trace ( ( mineral constituent ) ( of ( most ( granite ( and ( felsic ( igneous rocks ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Zircon)) (VP (VBZ is) (NP (DT a) (JJ common) (NN accessory) (S (VP (TO to) (VP (VB trace) (NP (NP (NN mineral) (NN constituent)) (PP (IN of) (NP (JJS most) (NN granite) (CC and) (NN felsic) (NNS igneous) (NNS rocks))))))))) (. .)))
Zircon is a common accessory to trace mineral constituent of most granite and felsic igneous rocks.
(ROOT (S (NP (JJ Felsic) (NNS igneous) (NNS rocks)) (VP (VP (VBP contain) (NP (JJ felsic) (NNS minerals))) (, ,) (VP (ADVP (RB typically)) (VBP contain) (NP (NN aluminum) (CC and) (NN sodium))) (CC and) (VP (VBP are) (ADJP (JJ high) (PP (IN in) (NP (NN silica)))))) (. .)))
Felsic igneous rocks contain felsic minerals, typically contain aluminum and sodium and are high in silica.