Asbestiform minerals in ophiolitic rocks of Calabria (southern Italy)

Campopiano, Antonella; Olori, Angelo; Spadafora, A.; Bruno, M.; Angelosanto, Federica; Iannò, A; Casciardi, Stefano; R, Giardino; Conte, Maurizio; Oranges, Teresa; Iavicoli, Sergio

doi:10.1080/09603123.2018.1453051

Cited by 8 publications

(5 citation statements)

References 39 publications

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“…Further, the FT-IR and SEM-EDS analyses confirmed the presence of antigorite, chrysotile, and fibrous minerals, from the tremolite-actinolite series, in the samples from Mt. Reventino [20,21,58].…”

Section: Asbestos Minerals In Serpentinites From Gimigliano-mt Revenmentioning

confidence: 67%

“…In this paper, we report and discuss data available in literature referring to the petrographical and mineralogical studies performed on serpentinites from selected sites of southern Apennines. In particular, data here presented are from Dichicco et al [32,33], Punturo et al [19], Bloise et al [5], and Campopiano et al [20].…”

Section: Methodsmentioning

confidence: 99%

“…Reventino two different types of serpentinites occur as foliated and massive rocks. Mostly dark green serpentinites crop out as massive bodies that only sometimes are weakly foliated and cut by serpentine and calcite veins [5,[19][20][21].…”

Section: The Gimigliano-mt Reventino Serpentinitesmentioning

confidence: 99%

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Mineralogical Asbestos Assessment in the Southern Apennines (Italy): A Review

Dichicco

Paternoster

Rizzo

et al. 2019

Fibers

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This paper deals with petrography and mineralogy of serpentinitic rocks occurring in the Southern Apennines (Italy) with the aim to review the already available literature data and furnish new details on asbestos minerals present in the studied area. Two sites of Southern Italy were taken into account: the Pollino Massif, at the Calabrian-Lucanian border, and the surroundings of the Gimigliano and Mt. Reventino areas where serpentinites of Frido Unit are mainly exposed. Textural and mineralogical features of the studied rocks point to a similar composition for both sites including asbestos minerals such as chrysotile and tremolite-actinolite series mineral phases. Only in the Pollino Massif serpentinites edenite crystals have been detected as well; they are documented here for the first time. This amphibole forms as fibrous and/or prismatic crystals in aggregates associated with serpentine, pyroxene, and calcite. Metamorphism and/or metasomatic alteration of serpentinites are the most probable processes promoting the edenite formation in the Southern Apennine ophiolitic rocks.

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Section: Asbestos Minerals In Serpentinites From Gimigliano-mt Revenmentioning

confidence: 67%

Section: Methodsmentioning

confidence: 99%

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Mineralogical Asbestos Assessment in the Southern Apennines (Italy): A Review

Dichicco

Paternoster

Rizzo

et al. 2019

Fibers

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“…In the natural environment, a large set of metamorphic rocks may contain asbestos fibers, such as meta-ophiolitic rocks of basic or ultrabasic compositions (meta-gabbros, meta-basalts, serpentinites) (e.g. [4][5][6]) and hydrothermally altered dolerites ( [7]), more rarely in talc deposits ( [8]), metamorphosed dolostones and iron formations ( [9]) and subalkaline plutonic rocks ( [10]). Asbestos is listed as a Category 1 human carcinogen, because inhalation of asbestos fibers causes respiratory diseases, in particular asbestosis, lung cancers, and malignant mesothelioma (e.g.…”

Section: Introductionmentioning

confidence: 99%

Coupling SEM-EDS and confocal Raman-in-SEM imaging: A new method for identification and 3D morphology of asbestos-like fibers in a mineral matrix

Lahondère¹,

Schmidt²,

Duron³

et al. 2019

Journal of Hazardous Materials

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Asbestos consists in natural minerals crystallized in a specific habit and possessing in particular properties. In the case of Naturally Occurring Asbestos, usual methods applied to the identification of mineral fibers and the determination of their possible asbestiform nature seems not efficient, especially in the case of mineral fibers included in mineral matrix.We present a new in-situ method based on the use of confocal Raman-in-SEM imaging implemented in a Scanning Electron Microscope as an efficient method for in-situ mineralogy. The limitation of conventional methods is discussed. We applied 2D-Raman imaging to the identification of sub-micrometric fibers included in different mineral matrix. We were able to identify actinolite fibers down to 400 nm in diameter, included in feldspar, quartz and/or calcite matrix. HighlightsNew methods are requested for characterizing asbestos fibers in a mineral matrix SEM-Raman imaging is efficient for characterizing mineral fibers in-situ Confocal Raman imaging makes 3D analysis possible 3D analysis provides information on the aspect ratio and volume fraction of asbestos Fibers thinner than 400nm can be identified by confocal Raman in SEM ( = 532 nm) Keywords in-situ asbestos diagnosis; Raman-in-SEM imaging; naturally occurring asbestos; 3D analysis; fibrous amphiboles;

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“…

The presence of asbestos in ophiolitic rocks determines the need to assess the risk of exposure for workers during the extraction and processing of greenstone and for the population residing in the municipalities near ophiolitic outcrops. Previous studies [1][2][3] showed that the amphibole-group asbestos minerals, tremolite, are the most common type of asbestos found in ophiolites of the Mount Reventino area in Calabria, Italy. An asbestiform, but unregulated, mineral belonging to serpentine mineral group was also detected in this area: fibrous antigorite contaminated from chrysotile [4].

…”

mentioning

confidence: 99%