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Minerals, Volume 10, Issue 8

2020 August - 81 articles

Cover Story: Vermiculite is a layered silicate mineral with 2:1 crystalline structure and a broad diversity in charged layers associated with numerous isomorphic substitutions, disorder effects, dehydration–rehydration ability and swelling processes. Vermiculites are more abundant and much cheaper compared to other clays, with the same benefits. Therefore, they represent an interesting mineral for numerous environmental, constructional and agricultural applications. In this article, nitric acid was used to exfoliate some vermiculites to a degree that dramatically increased their specific surface area and altered their iron content, and the effect was even greater for the thermoexfoliated vermiculite. The cover image shows a light microscope image for one of these exfoliated vermiculites. View this paper
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Articles (81)

  • Article
  • Open Access
11 Citations
5,592 Views
25 Pages

pXRF Measurements on Soil Samples for the Exploration of an Antimony Deposit: Example from the Vendean Antimony District (France)

  • Bruno Lemière,
  • Jeremie Melleton,
  • Pascal Auger,
  • Virginie Derycke,
  • Eric Gloaguen,
  • Loïc Bouat,
  • Dominika Mikšová,
  • Peter Filzmoser and
  • Maarit Middleton

18 August 2020

Mineral exploration is increasingly challenging in inhabited areas. To evaluate the potential of soil analysis by pXRF (portable X-ray fluorescence) as a low-footprint exploration technique, we revisited a historic Sb district in an agricultural area...

  • Article
  • Open Access
8 Citations
3,217 Views
23 Pages

Application of Historical Geophysical Materials in Searching for Cu-Ag Ore Deposits—A New Direction of Research

  • Stanisław Speczik,
  • Lidia Dziewińska,
  • Waldemar Jóźwiak and
  • Krzysztof Zieliński

18 August 2020

This paper presents a new instrument in geological exploration, which uses historical geophysical data for the indication of potential zones of the occurrence of Cu-Ag ore, based on the example of the newly discovered Nowa Sól deposit in south...

  • Article
  • Open Access
17 Citations
3,606 Views
16 Pages

Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates

  • Sara Gismera,
  • María del Mar Alonso,
  • Marta Palacios and
  • Francisca Puertas

18 August 2020

The effect of two precursors (slag and fly ash), different particle size distribution, and three types of aggregate (siliceous sand, limestone, and recycled concrete) on alkali-activated material (AAM) mortar rheology were studied and compared to the...

  • Article
  • Open Access
10 Citations
6,471 Views
23 Pages

18 August 2020

The Pebble Project in Alaska is one of the world’s largest undeveloped copper deposits. The Environmental Impact Statement (EIS) proposes a 20-year open-pit extraction, sulfide flotation, and deposition of separated pyritic tailings and potenti...

  • Article
  • Open Access
13 Citations
4,684 Views
26 Pages

The Occurrence of Authigenic Clay Minerals in Alkaline-Saline Lakes, Pantanal Wetland (Nhecolândia Region, Brazil)

  • Isis Armstrong Dias,
  • Leonardo Fadel Cury,
  • Bruno Guimarães Titon,
  • Gustavo Barbosa Athayde,
  • Guilherme Fedalto,
  • Larissa da Rocha Santos,
  • Ana Paula Soares,
  • Camila de Vasconcelos Müller Athayde and
  • Anelize Manuela Bahniuk Rumbeslperger

17 August 2020

Mg clay minerals are usually associated with carbonates in alkaline-saline environments, precipitated from solution and/or transformation from other minerals. The aim of this research is to identify the mineralogy and geochemistry of clay minerals in...

  • Article
  • Open Access
8 Citations
4,823 Views
24 Pages

Formation of Natural Silicate Hydrates by the Interaction of Alkaline Seepage and Sediments Derived from Serpentinized Ultramafic Rocks at Narra, Palawan, the Philippines

  • Misato Shimbashi,
  • Shingo Yokoyama,
  • Yasutaka Watanabe,
  • Tsutomu Sato,
  • Tsubasa Otake,
  • Ryosuke Kikuchi,
  • Minoru Yamakawa and
  • Naoki Fujii

17 August 2020

In radioactive waste disposal facilities, low-permeability engineered barrier materials are important for inhibiting radionuclide migration. However, dissolution–precipitation reactions under alkaline conditions change the permeability of engin...

  • Review
  • Open Access
27 Citations
5,181 Views
22 Pages

17 August 2020

The review considers various complex mechanisms of isomorphism in the eudialyte-group minerals, involving both key positions of the heteropolyhedral framework and extra-framework components. In most cases, so-called blocky isomorphism is realized whe...

  • Article
  • Open Access
4 Citations
4,911 Views
19 Pages

Assessing Options for Remediation of Contaminated Mine Site Drainage Entering the River Teign, Southwest England

  • Abigail Jordan,
  • Rachel Hill,
  • Adrienne Turner,
  • Tyrone Roberts and
  • Sean Comber

17 August 2020

The river Teign in Devon has come under scrutiny for failing to meet environmental quality standards for ecotoxic metals due to past mining operations. A disused mine known as Bridford Barytes mine, has been found to contribute a significant source o...

  • Article
  • Open Access
11 Citations
11,054 Views
21 Pages

17 August 2020

This paper aims to characterize and interpret the trends in reserves, resources, and mine production of feldspar and feldspathoid rocks during 2005–2019 in the Czech Republic. With over 101 Mt of total resources and 22 Mt of reserves, feldspar...

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Minerals - ISSN 2075-163X