Company geologists believe this block acted as a significant fluid trap in the contact zone with the quartz monzonite
to the north-east.
The gold mineralization is associated with arsenopyrite-bearing quartz veins, breccias and stockworks hosted in Cretaceous quartz monzonite
intrusive and peripheral siltstone and chert of the Paleozoic Road River and Earn Groups.
Copper in these samples occurs as both oxide and sulphide mineralization in quartz veins, fractures and faults that cut quartz monzonite
porphyry ("QMP") dykes and adjacent granodiorite, which is a geological environment similar to the Ann Mason deposit.
The Charlo plutonic suite is a group of small plutons and dykes, located west of the Dickie Brook and Landry Brook plutons and consists mainly of diabase, quartz monzonite
to monzogranite, rhyolite porphyry, and dacite porphyry.
The rock types of the basement, according Adamu (1991), are medium to coarse grained granite, undifferentiated schist, gneisses, granite gneisses, fine grained biotites and biotites-hornblende granite, quartz monzonite
, quartz diorite and granodiorites.
The known mineralization is associated with quartz monzonite
intrusions, which typically show a magnetic low response from hydrothermal destruction of magnetite.
intrusives such as quartz monzonite
("PPQM"), rhyodacite ("PPRD"), quartz
All of these units were intruded by the Lened quartz monzonite
stock that has been dated at 93 [+ or -] 1 Ma, using K-Ar on biotite (Gordey and Anderson, 1993).
on a Saturday I find myself standing in a parking lot in Southern California's Joshua Tree National Park, which is famous for the quartz monzonite
rock that draws climbers from all over the world.
Late stage mineralization in the form of gold-silver-arsenic-antimony-mercury is zoned outward from a porphyritic quartz monzonite
stock of late Cretaceous age.
Drilling over both areas has intersected a potential stockwork vein system, dominated by disseminated to coarse pyrite, and hosted by an intensely altered quartz monzonite
The entire sequence consists of mainly mineralised quartz monzonite