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An application of geostructural and seismic investigations in a granite quarry in Sardinia, Italy
Published in Vladimír Strakoš, Vladimír Kebo, Radim Farana, Lubomír Smutný, Mine Planning and Equipment Selection 1997, 2020
F. Cincotti, S. Fais, P. Ligas, I. Uras
From geological and geostructural observations on the outcropping rocks, it can be deduced that the investigated area is mostly made up of monzogranite. The granite rockmass is quite homogeneous in composition but an increase in the discontinuities is observed in some sectors. The results of the geostructural survey showed K1 and K2 dominant sets with the following orientations: 100± 15°/72± 15° and 095±15°/35±10°,spacing: 67%<2 m, 33%>2 m and 40%<2 m, 60%>2 m, and persistence: 50%≥8–10 m and 70%≥15 m.
Geological modeling and mine planning for dimension stone quarries
Published in G. N. Panagiotou, T. N. Michalakopoulos, Mine Planning and Equipment Selection 2000, 2018
A. Caranassios, G. de Tomi, N. Senhorinho
As part of the modeling task, each individual granite structure was geologically identified. According to the literature some of these granites are classified as Pre-Cambrian undifferentiated, igneous granular rocks. The entire area constitutes a variety of structures, including monzogranite, an igneous rock with holocristalin course structure, with porphyries of feldspar with colors ranging from gray to pink well distributed on a matrix of quartz, biotite and plagioclase, as well as other granites. There are outcrops in several places as massive formations and boulders.
Zircon U–Pb age, whole-rock geochemistry and Nd–Sr–Pb isotope constraints on petrogenesis of the Eocene Zajkan gabbro–monzogranite intrusion, Tarom-Hashtjin magmatic belt, NW Iran
Published in Australian Journal of Earth Sciences, 2022
M. A. A. Mokhtari, H. Kouhestani, K. Z. Qin
Monzogranite, which has a granular to porphyritic texture and light grey colour in hand specimens, has porphyritic to porphyritic and granular textures, and consists of plagioclase (30%), K-feldspar (35%), quartz (20%) and some chloritised–actinolitised mafic minerals (15%) (Figure 3f). Plagioclase presents as euhedral to subhedral crystals that are altered to sericite, clay minerals and in places epidote. K-feldspar occurs as fine-grained subhedral to xenomorphic crystals with weak alteration to clay minerals, and quartz occurs as fine-grained xenomorphic crystals between other crystals. Some mafic minerals (probably originally hornblende) are completely altered to actinolite, chlorite and opaque minerals.
The early–middle Silurian Delite monzogranite and quartz syenite, East Kunlun Orogenic Belt, NW China: petrogenesis and implications for tectonic evolution of the Proto‑Tethys
Published in Australian Journal of Earth Sciences, 2023
F. C. Wang, J. Y. Li, Y. J. Shen, T. Tian, Y. Qian, F. Y. Sun, H. X. Wang
The monzogranite is a grey, with a medium–fine granular texture and massive structure made up of plagioclase (45%), potash feldspar (35%) and quartz (20%), and locally shows slight sericitisation and argillisation (Figure 3a–c). The quartz syenite is mostly grey with red potash feldspar crystals, medium–coarse granular texture and porphyritic structure composed of potash feldspar (65%), plagioclase (25%) and quartz (10%), and locally accompanied by slight alteration, including sericitisation and argillisation (Figure 3d–f).