2] diagram (Middlemost, 1994) shows the plutonic samples ploted in the monzodiorite to quartz monzonite
Geological mapping and detailed petrography suggest that the Dinsi area is principally occupied by medium-grained porphyritic granite and quartz monzonite
which covers the western part of the outcrop area.
Company geologists believe this block acted as a significant fluid trap in the contact zone with the quartz monzonite
to the north-east.
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.
Formed by molten liquid that oozed upward from the inner earth, the liquid cooled before reaching the surface, forming an igneous rock called quartz monzonite
, similar to granite.
A second occurrence of nifontovite was reported by Kusachi and Henmi (1994) from crystalline limestone in the vicinity of skarns associated with quartz monzonite
dikes in the Fuka Okayama Prefecture, Japan, about 40 km northwest of Okayama.
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.
Mineralisation at Cadia is hosted in units of the Forest Reefs Volcanics and the Cadia Hill Monzonite, and is spatially related to the porphyritic quartz monzonite
(porphyry) phase of the intrusive stock.
The oldest rocks in the Barrancas subprovince are the marine sediments of the Jurassic period which have been folded, faulted, and metamorphosed by the intrusion of an acid igneous batholith, probably a quartz monzonite
porphyry, during the Oligocene epoch.