This Cu-Au-Mo-fertile Yeoval intrusive complex consists of a suite of calc-alkaline granite and adamellite
, intermediate and basic intrusive rocks with associated andesitic volcanic rocks.
The Xinzhou pluton rocks comprise a diverse variety of rock types, ranging from hornblende granite, adamellite
, and biotite granite to tonalite.
On petrographic basis, Laghari (2004) and Ahmad and Chaudhry (2008) classified the rocks as adamellite
. However, the major element chemistry does not support this.
The granitic rock samples of the HP plot mostly in the granite, monzogranite (adamellite
) and granodiorite fields with minor tonalite, whereas samples of MMEs primarily plot in the fields of quartz monzodiorite/ monzogabbro, quartz diorite/gabbro (Fig.
The intrusions in the studying area mainly include the Linglong biotite adamellite
, Guojialing granodiorite, and Luanjiahe monzonitic granite.
Mineralisation occurs as irregular shoots in altered aplite within the Rockvale Adamellite
. Mineralisation is predominantly pyrite-arsenopyrite, but gold-silver-lead mineralisation (similar to both the Ruby and Tulloch mines) is recorded.
The soils at this location were developed from Mount Duval Adamellite
, a coarse-grained component of the New England Granites.
The batholith comprises five dome-like plutons that consist of quartz diorite to granodiorite, microcline-porphyritic and equigranular adamellite
with coarse-grained varieties containing muscovite phenocrysts up to 70 mm (Stillman, 2001).
The catalogue card for the artefact at the Queensland Museum records the raw material as a 'type of granite', either 'adamellite
The magmatic rocks exposed in the research area are primarily biotite alkali-feldspar granite and biotite granite of Paleogene age, as well as porphyritic biotite monzonitic granite and two-mica adamellite
of Neogene age (Figure 2).
In the Nagar Parkar complex these rocks have been referred to as adamellite
by Laghari (2004) and Ahmad and Chaudhry (2008).
In Wadlai adamellite
sphere, zircon and apatite are present along with altered product epidote (Laghari, 2005).