Results 81 to 90 of about 3,729 (220)

Mineralogy of sulfides [PDF]

open access: yes, 2017
Metal sulphides are the most important group of ore minerals. As shown in this brief introduction, much is known about their compositions, crystal structures, phase relations and paragenesis.
Becker   +31 more
core   +1 more source

Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador [PDF]

open access: yes, 2018
The Fortuna oxidized gold skarn deposit is located in the northern part of the Nambija gold district, southern Ecuador. It has been subdivided into four mineralized sites, covering a distance of 1km, which are named from north to south: Cuerpo 3, Mine 1,
Chiaradia, Massimo   +3 more
core  

RARE EARTH MINERALS IN ALKALINE AND SUBALKALINE ROCKS OF THE BALBUK COMPLEX (SOUTH URALS) [PDF]

open access: yesМинералогия, 2016
Mineral composition of alkaline and subalkaline rocks of the Balbuk complex (South Urals) is characterized. The major REE minerals are monazite-(Ce), allanite-(Ce), and rhabdophane-(Ce).
E.P. Makagonov, V.A. Kotlyarov
doaj  

Génesis de los depósitos de hierro del suroeste de la provincia de Badajoz: Mina Monchi [PDF]

open access: yes, 1976
La mina "Monchi", situada próxima al contacto del batolito de Burguillos del Cerro con las rocas de carbonatos de la Sierra del Cordel, presenta una metalización ferrífera epignética de skam.
Ruíz García, Casilda
core   +1 more source

Origin and occurrence of gem-quality, skarn-hosted barite from Jebel Ouichane near Nador in Morocco. [PDF]

open access: yesSci Rep, 2021
Dumańska-Słowik M   +8 more
europepmc   +1 more source

Magmatic-dominated fluid evolution in the Jurassic Nambija gold skarn deposits (southeastern Ecuador) [PDF]

open access: yes, 2018
The Jurassic (approximately 145Ma) Nambija oxidized gold skarns are hosted by the Triassic volcanosedimentary Piuntza unit in the sub-Andean zone of southeastern Ecuador.
Chiaradia, Massimo   +5 more
core  

COMPOSITION OF GOLD AND FORMATION CONDITIONS OF ORES FROM THE KOPTO HYDROTHERMAL DEPOSIT (NORTHEAST TUVA) [PDF]

open access: yesМинералогия, 2018
The mineralogical and geochemical peculiarities and formation conditions of gold are considered for the Kopto gold stockwork deposit juxtaposed on skarns and metasomatites of the Tardan gold cluster (Northeast Tuva).
R.V. Kuzhuget   +3 more
doaj  

The use of ERTS-1 images in the search for large sulfide deposits in the Chagai District, Pakistan [PDF]

open access: yes
The author has identified the following significant results. Visual examination of color composites was tested under relatively ideal conditions for direct detection of large hydrothermal sulfide deposits at the low-grade porphyry copper deposit at ...
Schmidt, R. G.
core   +1 more source

Late-Hercynian Intrusion-related gold deposits: an integrated model on the Tighza polymetallic district, central Morocco

open access: yes, 2015
International audienceLate-Hercynian Intrusion-related gold deposits: an integrated model on the Tighza polymetallic district, central Morocco, African Earth Sciences (2015), doi: http://dx.Gold have been recently recognized in the Tighza (formerly Jebel
Branquet, Yannick   +7 more
core   +4 more sources

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