Results 101 to 110 of about 16,702 (208)

Розробка технології збагачення розсипних титанових руд в умовах ТОВ ВКФ «Велта» [PDF]

open access: yes, 2018
Об’єктом дослідження є технологія збагачення розсипних ільменітових руд. Предметом досліджень є ільменітові руди розсипного родовища. Метою дипломної роботи є зменшення втрат ільменіту з відходами магнітного збагачення розсипних руд Берзулівського ...
Pecherskiy, Vadym   +1 more
core  

Composición y geoquímica de los minerales pesados de las facies Weald de la Cuenca del Maestrazgo (España): Implicaciones para la procedencia durante la etapa de rifting Jurásico Superior-Cretácico Inferior [PDF]

open access: yes, 2005
Las areniscas en facies Weald de la Cuenca del Maestrazgo fueron depositadas durante la etapa de rift Jurásico superior-Cretácico inferior. Una característica de las cuencas intracratónicas desarrolladas durante periodos de rifting es la presencia de ...
Caja, Miguel Ángel   +3 more
core  

Chemical Composition of the Tourmaline from Stratiform Tourmalinites of the Passagem de Mariana Gold Mine, Southeastern Quadrilátero Ferrífero (Minas Gerais, Brazil) [PDF]

open access: yesGeologia USP. Série Científica, 2009
The Passagem de Mariana Mine in the southeastern part of the Quadrilátero Ferrífero, Minas Gerais, Brazil, is one ofthe oldest Brazilian gold mines. Gold is associated with stratiform tourmalinites and tourmaline-bearing quartz and carbonateveins and ...
Gianna Maria Garda   +5 more
doaj  

Geologic hypotheses of Lake Tanganyika region, Zaire, drawn from ERTS imagery [PDF]

open access: yes
Based on initial work in the Lake Tanganyika area of eastern Zaire, it has been concluded that ERTS imagery is extremely useful for reconnaissance level geologic mapping and analysis in this region of the humid tropics.
Ilunga, S., Wolyce, U.
core   +1 more source

Yellow Dravite from Tanzania [PDF]

open access: yes, 2016
During the 2016 Tucson gem shows, Todd Wacks (Tucson Todd’s Gems, Tucson, Arizona, USA) showed author BML a yellow 11.13 ct tourmaline that he faceted from a piece of rough recently obtained on a buying trip to Tanzania by Sir-Faraz Ahmad (Farooq) Hashmi
Laurs, Brendan M.   +2 more
core  

Geology and mineral deposits of the Julian District, San Diego County, California [PDF]

open access: yes, 1934
The Julian region, in the central part of San Diego County, California, includes the Julian, Banner, several other less important mining districts, and the Stonewall Mine on the Cuyamaca land grant.
Donnelly, Maurice
core  

Pegmatites in Southwestern Montana [PDF]

open access: yes, 1941
Little has been written on pegmatites in Montana except in conjunction with reports on mining districts. This subject was chosen as a senior thesis to see what facts could be ascertained re­garding pegmatites alone, and an attempt has been made by the ...
Rostad, Ora
core   +1 more source

Monazite in polymetallic chlorite-(tourmaline)-quartz-(fluorite)-cassiterite-sulphide lodes and its potential for constraining the chronology of magmatic hydrothermal mineralisation in Cornwall. [PDF]

open access: yes, 2013
Monazite [(Ce, La, Th, Nd, Y) PO4] occurs far more widely within the magmatic hydrothermal lode systems of Cornwall than has been previously recognised. In situ and mine dump specimens analysed by binocular and transmitted light microscopy, SEM, XRD and
Jewson, C.   +2 more
core  

Application Software, Domain-Specific Languages, and Language Design Assistants [PDF]

open access: yes, 2000
While application software does the real work, domain-specific languages (DSLs) are tools to help produce it efficiently, and language design assistants in turn are meta-tools to help produce DSLs quickly. DSLs are already in wide use (HTML for web pages,
Heering, Jan
core   +2 more sources

The petrogenetic meaning of schorl-dravite transition and apatite association in periamphibolitic tourmalinites – Northern Portugal [PDF]

open access: yes, 2010
Publicado em "Acta Mineralogica-Petrographica.
Dias, Patrícia Sofia Alves   +1 more
core  

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