Results 41 to 50 of about 542 (177)

Feldspar production from dimension stone tailings for application in the ceramic industry

open access: yesJournal of Materials Research and Technology, 2019
Brazil has one of the largest reserves of granite in the world and is in part of the top ten producers of dimension stone. The dimension granite extensive mining in this country generates expressive volumes of tailings, among then rock fragments and fine
André Carlos Silva   +3 more
doaj   +1 more source

The rapakivi granite plutons of Bodom and Obbnäs, southern Finland: petrography and geochemistry [PDF]

open access: yesBulletin of the Geological Society of Finland, 1999
The Obbnäs and Bodom granite plutons of southernmost Finland show the typical petrographic and geochemical features of the Proterozoic rapakivi granites in Finland and elsewhere: they cut sharply across the 1900 Ma Svecofennian metamorphic bedrock and ...
P. Kosunen
doaj   +1 more source

Geology and geochemistry of the Redrock Granite and anorthosite xenoliths (Proterozoic) in the northern Burro Mountains, Grant County, New Mexico, USA [PDF]

open access: yesBulletin of the Geological Society of Finland, 2002
Mineral ages from the A-type granites and anorthosite xenoliths in the Redrock area in the northwestern Burro Mountains in southwestern New Mexico cluster around ~1220–1225 Ma and provide yet another example of bimodal igneous activity during this time ...
V.T. McLemore   +5 more
doaj   +1 more source

Geology and Geoheritage Assessment of Lata Keding, Jeli, Kelantan, Malaysia [PDF]

open access: yesBIO Web of Conferences, 2023
Lata Keding boasts numerous unique geological features encompassing diverse geological structures. The area is in the Jeli District of Kelantan and straddles the border of Kelantan and Perak.
Sulaiman Nursufiah   +4 more
doaj   +1 more source

Plagioclase-mantled K-feldspar in the Carboniferous porphyritic microgranite of Altenberg-Frauenstein, Eastern Erzgebirge / Krušné Hory [PDF]

open access: yesBulletin of the Geological Society of Finland, 2002
The Upper Carboniferous porphyritic microgranite of Altenberg-Frauenstein, formerly known as Granitporphyr (Dalmer 1896) and here abbreviated as GP, forms a 36 km long and up to 18 km wide complex of ring dykes related to the Teplice-Altenberg caldera in
A. Müller, R. Seltmann
doaj   +1 more source

Amazonitic alkali feldspar from the Tanakami Granitic pegmatite, southwest Japan

open access: yesJournal of Mineralogical and Petrological Sciences, 2010
This is the first detailed description of amazonitic alkali feldspar in Japan. The amazonitic feldspar is from pegmatite in the Tanakami Granite, southwest Japan. Macroscopically, the feldspar is characterized by the coexistence of pale blue and white parts.
NAKANO, Satoshi, MAKINO, Kuniaki
openaire   +2 more sources

Petrography and geochemistry of the topaz-bearing granite stocks in Artjärvi and Sääskjärvi, western margin of the Wiborg rapakivi granite batholith [PDF]

open access: yesBulletin of the Geological Society of Finland, 2002
The Artjärvi and Sääskjärvi granite stocks at the western margin of the Wiborg rapakivi batholith are multiphase rapakivi granite intrusions in which the most evolved phase is topaz-bearing granite.
S. Lukkari
doaj   +1 more source

40Ar-39Ar Dating of Muscovite from the Zhaojinggou Nb-Ta Polymetallic Deposit in Wuchuan County of Inner Mongolia and Its Geological Implications

open access: yesYankuang ceshi, 2017
The Zhaojinggou Nb-Ta polymetallic deposit in Inner Mongolia is a newly discovered large rare metal ore deposit. The reserve of Nb-Ta oxides is more than 8200 tons.
GAO Yun   +5 more
doaj   +1 more source

Geochemistry of Granites in Panggong Lalat, Gua Musang, Kelantan [PDF]

open access: yesBIO Web of Conferences
Granites are among the most significant rock formations in the Earth’s crust and play a crucial role in various geological processes. This study focuses on examining the geology and granitic rock formations in Panggong Lalat, Gua Musang, Kelantan through
Shafiee Nor Shahida   +3 more
doaj   +1 more source

Geochemistry Petrography, thermobarometry and investigation of magmatic series in Mirabad- Chehel Khane granitoid body (east of Bouin– Miandasht, Isfahan province) [PDF]

open access: yesپترولوژی, 2017
On the base of petrology, the Mirabad- Chehel Khane granitoid, east of Bouin-Miandasht, dominantly consists of syenogranite, monzogranite, alkali granite and granodiorites.
Seyed Mohsen Tabatabaei Manesh   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy