Results 41 to 50 of about 26,318 (233)

Geologia e Geocronologia do Maciço Alcalino Máfico-Ultramáfico Ponte Nova (SP-MG)

Geologia USP. Série Científica, 2009
O maciço alcalino máfico-ultramáfico Ponte Nova, localizado no setor norte da Província Serra do Mar, junto à porção oriental da Serra da Mantiqueira, na região Sudeste do Brasil, encontra-se encaixado em granitoides e gnaisses migmatíticos Pré ...
Rogério Guitarrari Azzone, Excelso Ruberti, Gaston Eduardo Enrich Rojas, Celso de Barros Gomes   +3 more
doaj   +1 more source

Mineralogia: Disciplina Básica e Profissionalizante

Geologia USP. Publicação Especial, 2007
This article discusses the importance of Mineralogy for the graduate Geology degree course at the University of SA£o Paulo. The discussion started due to possible changes that may occur in the fields of occupation of geologists in the professional market, as new regulations have been proposed by the regulatory councils (Confea, Conselho Federal de ...
Fábio Ramos Dias de Andrade, Eliane Aparecida Del Lama   +1 more
openaire   +2 more sources

Integrating rotational components to optical properties observed in petrographic thin sections via automated image acquisition and analysis

Mineralogia
The analysis of petrographic thin sections is a widely used process for the identification of the mineralogy of rocks and the analysis of their textural and microstructural characteristics.
Pretorius Jacob Johannes, Mayne Matthew Jason   +1 more
doaj   +1 more source

Composição Química da Turmalina de Turmalinitos Estratiformes da Mina de Passagem de Mariana, Sudeste do Quadrilátero Ferrífero (MG)

Geologia USP. Série Científica, 2009
A mina subterrânea de Passagem de Mariana é uma das minas de ouro mais antigas do Brasil. O ouro associa-se a turmalinitos estratiformes e veios e brechas de quartzo e carbonato com turmalina.
Gianna Maria Garda, Johann Hans Daniel Schorscher, Paulo Beljavskis, Marcos de Souza Mansueto, Margareth Sugano Navarro, Andrezza Alves Mota   +5 more
doaj   +1 more source

Mineralogia do solo [PDF]

, 2011
A fase sólida dos solos é composta de uma fracção mineral e uma orgânica. Por sua vez, a fracção mineral divide-se em lotes de dimensões que apresentam diferenças em relação à mineralogia e ao comportamento químico.
Sampaio, Elsa
core  

Thin walled pottery from Alife (Northern Campania, Italy) [PDF]

, 2015
The file attached is the published version of the ...
De Bonis, A, Germinario, C, Grifa, C, Guarino, V, Langella, A, Mercurio, M, Morra, V, Petrone, CM, Soricelli, G   +8 more
core   +1 more source

Co‐Impregnated MgAl Layered Double Hydroxide as an Efficient Catalyst for Glycerol Oligomerization

Applied Organometallic Chemistry, Volume 40, Issue 1, January 2026.
A cobalt(II) acetylacetonate–impregnated MgAl LDH catalyst was developed, showing enhanced basicity and superior activity in glycerol oligomerization, achieving 68% conversion and 27% diglycerol selectivity. The catalyst maintained high performance over three recycling cycles, with structural and surface modifications confirmed by comprehensive ...
Fernando José Soares Barros, Ramón Moreno‐Tost, Juan A. Cecilia, Francisco Murilo Tavares de Luna, Enrique Rodríguez‐Castellón, Rodrigo Silveira Vieira   +5 more
wiley   +1 more source

A phlogopite-amphibole-plagioclase bearing websterite from Guinadji volcano (Adamawa Plateau, Northern Cameroon): evidence of a cumulate origin and crustal event

Mineralogia
An unusual phlogopite-amphibole-plagioclase-bearing websterite xenolith has been sampled in an alkali basaltic pyrolastite from Guinadji volcano, SE Ngaoundéré, Adamawa plateau, northern Cameroon, eastern extension of the continental sector of the ...
Kagarabi Paterne Mulimbi, Ntaflos Theodoros, Tamen Jules, Nkouathio David G., Tumba Kaniki   +4 more
doaj   +1 more source

Clays for Low‐Carbon Cements: Overview, Progress, and Challenges

Global Challenges, Volume 10, Issue 1, January 2026.
This review provides a critical overview of recent developments of activated clays to function as artificial pozzolans. After a thorough description of the clays that yield good pozzolanic performances, selected examples are given on thermal and mechanical activations. Chiefly, general correlations are extracted from reported data despite its scattered
Imane Koufany, Isabel Santacruz, Angeles G. De la Torre, María D. Rodríguez‐Ruiz, Miguel A. G. Aranda   +4 more
wiley   +1 more source

Mimetite and polymineralic mimetite-pyromorphite-vanadinite single crystals from the Sowie Mts, Poland

Mineralogia
Millimeter-sized crystals of mimetite and pyromorphite, and polymineralic mimetite-pyromorphite-vanadinite crystals occur in quartz-baryte vein within paragneisses of the Sowie Mts, SW Poland.
Szełęg Eligiusz, Janeczek Janusz, Juroszek Rafał, Danila Marta   +3 more
doaj   +1 more source