Mineral Concentrations in the Recent Sediments Off Eastern Macedonia, Northern Greece: Geological and Geochemical Considerations

Perissoratis, C.; Moorby, S. A.; Angelopoulos, I.; Cronan, D. S.; Papavasiliou, C.; Konispoliatis, N.; Sakellariadou, Fani; Mitropoulos, Dimitrios

doi:10.1007/978-3-642-51858-4_29

Cited by 12 publications

(7 citation statements)

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“…Significant reserves of REE are found in the placer deposits along the coast of Northeastern Greece between the peninsula of Chalkidiki and Kavala, with 240 km coastal length [40][41][42]. Geochemical investigations revealed up to 8000 ppm in REE with 93.5% consisting of the light REE mainly Ce, La, Nd and Pr, with allanite being the main REE-bearing mineral phase [40].…”

Section: Rare Earth Elements (Ree)mentioning

confidence: 99%

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Geological, Mineralogical and Geochemical Aspects for Critical and Rare Metals in Greece

Melfos

Voudouris

2012

Minerals

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Abstract:The European Union (EU) is highly dependent on critical and rare metals which are very important for a sustainable development. However, European industry is not able to cover its demands from native sources and it imports commodities from third countries. Greece is one of the EU countries with the most potential for supplying these strategic metallic raw materials in the future, since it hosts a large number of ore deposits. The epithermal-and porphyry-type deposits and the reduced intrusion related systems of the Serbomacedonian and the Rhodope metallogenic provinces in Northeastern Greece are promising targets for a future exploitation and exploration in Sb, Te, Mo, Re, Ga, In, REE and PGE. Greece is the leading producer of Ni and Al in the EU from laterites and bauxites of central and northern Greece. These deposits also contain significant amounts of Co or REE which should be considered in the future plans of the processing industries. REE are found in high contents at the placer deposits between Chalkidiki and Kavala (North Greece) and elevated PGE concentrations are associated with the chromitites of northwestern Greece. Therefore, the mineral wealth of Greece can contribute significantly to a sustainable and a competitive economy of Europe.

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Section: Rare Earth Elements (Ree)mentioning

confidence: 99%

“…Geochemical investigations revealed up to 8000 ppm in REE with 93.5% consisting of the light REE mainly Ce, La, Nd and Pr, with allanite being the main REE-bearing mineral phase [40]. It is very probable that the primary sources of these LREE bearing placers are located at the nearby Kavala or Pangeon Mt.…”

Section: Rare Earth Elements (Ree)mentioning

confidence: 99%

Geological, Mineralogical and Geochemical Aspects for Critical and Rare Metals in Greece

Melfos

Voudouris

2012

Minerals

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“…The North Aegean Sea is characterized by rich marine species diversity and eutrophic conditions, compared with adjacent oligotrophic waters. This is due to the presence of numerous rivers outlets from the northeast of Greece, including the rivers Axios, Strimonas, Nestos and Evros (Perissoratis, Angelopoulos, Matarangas, & Konispoliatis, 1984), contributing to inflow of fresh water and nutrients into the North Aegean Sea (Sylaios, Stamatis, Kallianiotis, & Vidoris, 2005). The North Aegean Sea is also strongly influenced by the water coming from the Black Sea, especially during winter and spring (Poulos, Drakopoulos, & Collins, 1997).…”

Section: Introductionmentioning

confidence: 99%

Abundance, distribution and diet of the common dolphin,Delphinus delphis, in the northern Aegean Sea (Greece)

Milani

Vella

Vidoris

et al. 2019

Aquatic Conservation

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1. The abundance, distribution and diet of the short-beaked common dolphin were investigated as part of the first detailed study on cetacean populations in the North Aegean Sea. Since 2004, the area has been proposed by national and international entities as a marine protected area for common dolphins and other cetacean species owing to its high biodiversity.2. Abundance and distribution were investigated between 2005 and 2013 through dedicated scientific marine transect surveys, covering 14,701 km, in sea conditions of Beaufort sea state 3 and below. The line-transect sampling method was used to estimate relative abundance, using Distance 6.0 software. Encounter rate for this species in the study area was estimated to be 0.24 groups/100 km (1.5 dolphins/100 km), with a mean group size of 6.88 (SE = 1.90).3. Common dolphin sightings were analysed for correlations with eight environmental variables (distance from the coast, depth, slope, median salinity, gradient of salinity, median temperature, gradient of temperature and mean current) using generalized additive modelling. Common dolphin sightings were significantly correlated to depth, temperature and salinity. 4. Stomach-content analyses were performed on eight suitable samples from common dolphins stranded in the study area. The trophic level of the species was calculated, indicating that this species is a top predator.5. This research provides the first estimates for abundance and distribution and the first diet analysis for this Mediterranean Endangered dolphin species in the study area based on a year-round long-term study.

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“…The potential of these sands was initially described by Papadakis [12]. In 1981-1984, the Institute of Geology and Mineral Exploration (IGME) carried out extensive geological, mineralogical and geochemical research on the marine sediments of the Strymonikos plateau and the gulfs of Ierissos, Strymonikos and Kavala [13]. The strong anomalies of La and Zr in the sediments led IGME to conduct detailed research in this area, for the exploration of the polymetallic placers, during the period 1996-2000 [14,15].…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and Mineral Chemistry of the REE-Rich Black Sands in Beaches of the Kavala District, Northern Greece

et al. 2022

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The coastal area of the Kavala district, Northern Greece, is characterized by minerals enriched in rare earth elements (REE). The present study focuses on the mineralogy of the black sands from six different locations and the comprehensive mineral chemistry of the REE-bearing minerals, allanite-(Ce), epidote, monazite, thorite, zircon and titanite. Allanite-(Ce) is the most important carrier of light REE (LREE) in the studied black sands, reaching up to 23.24 wt % ΣREE. The crystal chemistry of allanite-(Ce) transitions into ferriallanite-(Ce), due to the significant involvement of Fe3+. High resolution backscattered electron (BSE) images were used to identify zoning that corresponds to variations in REE, Th and U. These modifications follow the exchange scheme: (Ca + (Fe3+, Al))−1(LREE, Y, Th, U + (Fe2+, Mg, Mn))+1. Epidotes may also contain up to 0.5 REE3+ apfu. Monazite and thorite are found as inclusions in allanite-(Ce) and are enriched in Ce, La and Nd, together with Th and U. Some zircons are enriched in Hf, while some titanites host Nb and V.

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Mineral Concentrations in the Recent Sediments Off Eastern Macedonia, Northern Greece: Geological and Geochemical Considerations

Cited by 12 publications

References 1 publication

Geological, Mineralogical and Geochemical Aspects for Critical and Rare Metals in Greece

Geological, Mineralogical and Geochemical Aspects for Critical and Rare Metals in Greece

Abundance, distribution and diet of the common dolphin,Delphinus delphis, in the northern Aegean Sea (Greece)

Mineralogy and Mineral Chemistry of the REE-Rich Black Sands in Beaches of the Kavala District, Northern Greece

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