Granosyenitic, syenitic, and quartz monzonitic rocks (mangeritic rocks after Bogatikov & Birkis, 1973) and associated gabbro-anorthosites and ultramafic rocks are found in the southern part of the batholith (Fig.
The quartz monzonitic rocks in the southern part of the Riga batholith are brownish, mostly coarse-grained porphyritic rocks containing megacrysts of euhedral, mesoperthitic alkali feldspar.
Identification of Paleoproterozoic anorthositic and monzonitic
rocks in the vicinity of the Mesoproterozoic Nain Plutonic Suite, Labrador; U-Pb evidence.
The sulphides have occurred as both infill and alteration (spots) and also overprint the monzonitic
host sill/dyke rock.
Mineralization is hosted in an altered, brecciated and fractured, felsic intrusive, of monzonitic
to monzodioritic composition, which carries extensive hematite, chlorite, and carbonate.
The Mitchell Zone is an area of intensely stockworked and veined, mainly phyllic altered, variably foliated volcanics and monzonitic
porphyry exposed over an area of at least 200 by 1,000 meters.
Bald Butte represents a stockwork molybdenite system that is spatially and genetically related to the emplacement of a multi-phase Eocene age composite stock of granitic to quartz monzonitic
At the Main Copper Zone, mineralization is associated with potassic altered monzonitic
porphyries which intrude quartz-chlorite-magnetite altered volcanics.
intrusions host a number of mineralized veins mined in the district, and are probably the source of the mineralized veins and structures.
There is evidence of several old gold and polymetallic prospects at Guerrero, some of which occur in close proximity to the large Tertiary monzonitic
intrusive which appears within the volcanic and volcano-sedimentary units in the southwest corner of the concession.
The Nordik Southeast is a magnetic/chargeability high coincident with potassic altered monzonitic
to dioritic intrusive and volcanic rocks.