5 pieces of beucha granite porphyry
, size up to approx.
Ore body III is distributed along structural fracture belt (F1) north to east, which belongs to ore body of iron, copper and gold under control of structural fracture belt and iron-oxide copper gold (IOCG) ore body, whose formation may be related to the intrusion of aplite and granite porphyry and activities of north-east fault.
The weighted average U-Pb age of granite porphyry zircon is 83[+ or -]1Ma, which is about 4 Ma later than quartz diorite (Yao et al.
It can be grouped broadly into the following phases: 1) rhyolite/welded tuff (radial dykes) as extrusive phase, 2) granite/ granite porphyry
as intrusive phase.
Numerous dykes of granite porphyry
, syenite porphyry, rhyolite porphyry are widely distributed within the Khatanbulag intrusive complex.
Fyffe (1998) noted that the Jake Lee Mountain pluton has a core of medium-to coarse-grained, equigranlar riebeckite-bearing granite enveloped by a fine-gained rim of rapakivi granite porphyry
Francois Mountains, Mesoproterozoic, Missouri, Graniteville Granite, Munger Granite Porphyry
Skarn style mineralization occurs at the contact of granite porphyry
intrusives and sedimentary rock.
The Z parameter for three samples of the Munger Granite Porphyry
, a ser ies of ring plutons exposed around the western and southern edge of the caldera, averaged 0.
The Kahn-uul prospect, 100 kilometres southeast of Ulzit gol is characterized by broad zones of limonitized and silicified quartz-sericite-chlorite schists intruded by granite porphyry
and situated along a major east-west structure.
Gold mineralization is reported in broad zones of limonitized and silicified quartz-sericite-chlorite schists intruded by granite porphyry
intrusives situated along a major east-west structure.
Silver Standard's major silver exploration projects include El Asiento, an epithermal silver bulk tonnage prospect in southwestern Bolivia; San Acacio, a former high-grade silver producer near Zacatecas, Mexico; and Dios Padre, a former high-grade silver producer within a granite porphyry
that has bulk tonnage potential in the State of Sonora, Mexico.