Quartz monzonite - Wikipedia
Quartz monzonite is an intrusive, felsic, igneous rock that has an approximately equal proportion of orthoclase and plagioclase feldspars. It is typically a light colored phaneritic (coarse-grained) to porphyritic granitic rock.
Monzonite - Wikipedia
Monzonite is an igneous intrusive rock, formed by slow cooling of underground magma that has a moderate silica content and is enriched in alkali metal oxides. Monzonite is composed mostly of plagioclase and alkali feldspar .
The Anatomy of an Alkalic Porphyry Cu-Au System
2019年5月1日 · The Late Ordovician-early Silurian (~455–435 Ma) Northparkes system is a group of silica-saturated, alkalic porphyry deposits and prospects that developed within the Macquarie island arc. The system is host to a spectacular and diverse range of rocks and alteration-mineralization textures that facilitate a detailed understanding of its ...
Contrasting mineralized and barren porphyries in the Zhongdian …
2024年5月27日 · The LD quartz monzonite porphyry, with an area of 0.9 km 2, intruded into the Triassic Qugasi Formation and shows porphyry-skarn Cu mineralization (Fig. 2b) with Cu reserves of 10 thousand tons...
Quartz Monzonite Porphyry - National MagLab
2015年11月13日 · Quartz Monzonite Porphyry. Porphyries are rocks that contain large, conspicuous crystals in a finer groundmass of minerals. Quartz monzonite, also known as adamellite, is just one of many different varieties of rocks that frequently occur as porphyries. Quartz monzonite is a granitic rock that is primarily composed of quartz, plagioclase ...
Mesozoic multiple magmatism and porphyry–skarn Cu
2018年10月1日 · The Mesozoic porphyry–skarn Cu–polymetallic systems of the Yidun Terrane hosted by the Late Triassic and Late Cretaceous intrusions provide chances to investigate the spatial and genetic relationships between subduction- and transtension-related magmatism and mineralization, and determine the petrogenesis and fertility of magmatic rocks.
From long-lived batholith construction to giant porphyry copper …
2021年1月28日 · The first inter-mineral porphyry, the Monzonite Porphyry, occurs as a series of dykes and is characterised by its high phenocryst abundance (60%) including feldspars (50%), anhedral quartz (10%) and biotite (5%).
Geology and genesis of auriferous porphyritic monzogranite and …
2022年3月1日 · The porphyritic monzogranite comprises phenocrysts (10–20 vol%) of alkali feldspar, plagioclase, quartz and minor hornblende, and matrix minerals (80–90 vol%) consisting of alkali feldspar, quartz, plagioclase, biotite, chlorite, epidote and accessory magnetite, apatite and zircon (Fig. 4).
Geochronology, Petrogenesis, and Metallogenic Implications of …
2024年8月5日 · According to LA-ICP-MS zircon U-Pb dating, the quartz monzonite porphyry from the Shanlixu deposit is aged 137.5 ± 1.7 Ma: while it differs from the timing of the magmatism and related mineralization in the Lujiang–Chuzhou Area, it is consistent with magmatic activity elsewhere in the Middle–Lower Yangtze River Valley Metallogenic Belt.
Petrogenesis and Geodynamic Mechanisms of Porphyry Copper
2024年8月27日 · We present new zircon U–Pb–Lu–Hf isotopic studies and geochemical data of the ore-bearing quartz monzonite porphyry from the Xifanping deposit to determine their petrogenesis and geodynamic mechanisms.