Lava stones from Neapolitan volcanic districts in the architecture of Campania region, Italy

Langella, Alessio; Calcaterra, Domenico; Cappelletti, Piergiulio; Colella, Abner; D’Albora, Maria Pia; Morra, Vincenzo; Gennaro, Maurizio de

doi:10.1007/s12665-009-0012-x

Cited by 22 publications

(9 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The geological features, soil characteristics and extensive use of stones of volcanic origin (yellow tuff, green tuff, etc.) in the traditional building construction systems [20] have been considered as responsible for the higher than the national average indoor radon mean activity concentration value (around 70 Bq/m 3 ) [21][22][23].…”

Section: Study Area and Sampling Designmentioning

confidence: 99%

Radon Survey in Bank Buildings of Campania Region According to the Italian Transposition of Euratom 59/2013

D’Avino

Pugliese

Ambrosino

et al. 2021

Life

View full text Add to dashboard Cite

222Rn gas represents the major contributor to human health risk from environmental radiological exposure. In confined spaces radon can accumulate to relatively high levels so that mitigation actions are necessary. The Italian legislation on radiation protection has set a reference value for the activity concentration of radon at 300 Bq/m3. In this study, measurements of the annual radon concentration of 62 bank buildings spread throughout the Campania region (Southern Italy) were carried out. Using devices based on CR-39 solid-state nuclear track detectors, the 222Rn level was assessed in 136 confined spaces (127 at underground floors and 9 at ground floors) frequented by workers and/or the public. The survey parameters considered in the analysis of the results were: floor types, wall cladding materials, number of openings, door/window opening duration for air exchange. Radon levels were found to be between 17 and 680 Bq/m3, with an average value of 130 Bq/m3 and a standard deviation of 120 Bq/m3. About 7% of the results gave a radon activity concentration above 300 Bq/m3. The analysis showed that the floor level and air exchange have the most significant influence. This study highlighted the importance of the assessment of indoor radon levels for work environments in particular, to protect the workers and public from radon-induced health effects.

show abstract

Section: Study Area and Sampling Designmentioning

confidence: 99%

Radon Survey in Bank Buildings of Campania Region According to the Italian Transposition of Euratom 59/2013

D’Avino

Pugliese

Ambrosino

et al. 2021

Life

View full text Add to dashboard Cite

show abstract

“…Trachyte outcrops have been widely exploited, making the Euganean Hills the most important district in Italy for the extraction of this material. Indeed, trachyte also occurs in other Italian regions (Sardinia, Lazio, Tuscany, Campania), in some cases with a notable tradition of use and exploitation (Calvino, 1966;De Gennaro, Calcaterra, Cappelletti, Langella, & Morra, 2000;Frulio, Langiu, & Mameli, 2004;Langella et al, 2009;Williams-Thorpe & Thorpe, 1989), but to a much lesser extent if compared to the commercial relevance of the Euganean district.…”

Section: Quarrying Activitymentioning

confidence: 99%

New petrographic and geochemical tracers for recognizing the provenance quarry of trachyte of the Euganean Hills, northeastern Italy

et al. 2017

View full text Add to dashboard Cite

Trachyte of the Euganean Hills is a subvolcanic porphyritic rock historically used as carving and building stone in northern and central Italy–primarily from Roman times onward–with the first evidence of its use dating back to prehistory. The numerous quarries and very similar trachyte varieties, as well as thewidespread use of this stone, create several problems in defining its provenance for archaeological and historical materials. New petrographic and geochemical tracers for recognizing the provenance quarry of Euganean trachyte are presented here, providing a Comprehensive reference database for archaeometric studies. The petrographic markers principally include quantitative data on mineralogical composition and textural features of phenocrysts and groundmass, determined by image analysis of chemical maps acquired by micro X-ray fluorescence and scanning electron microscope-energy-dispersive X-ray spectroscopy; particular use has been made of data on the abundance and grain-size distribution of feldspar phenocrysts, phenocrysts-groundmass ratio, content of SiO2 phases in the groundmass, and the arrangement and grain-size of microlites in the matrix. The geochemical tracers involve composition of bulk rock and phenocrysts, determined by X-ray fluorescence and laser ablation inductively coupled plasma mass spectrometry, respectively; quarry recognition can be achieved using plots built from concentrations of major and trace elements, with mineral-scale chemistry being the most effective and precise discriminant property, especially in the case of biotite and, secondarily, augite, kaersutite, and magnetite

show abstract

“…The erupted products range from trachyte to phonolite in composition. Vesuvian lava, also known as Pietrarsa ("burned stone"), beginning in the nineteenth century became a fundamental stone in the religious and civil architecture of the town of Naples (Langella et al 2009). …”

Section: Sample Description and Mineralogymentioning

confidence: 99%

Crystal structure and low-temperature behavior of "disordered" thomsonite

Gatta

Kahlenberg

Kaindl

et al. 2010

American Mineralogist

View full text Add to dashboard Cite

The crystal structure, crystal chemistry, and low-temperature structural evolution of natural thomsonite from Terzigno, Somma-Vesuvius volcanic complex, Naples Province, Italy, have been investigated by means of in situ single-crystal X-ray diffraction, electron microprobe analysis in the wavelength dispersive mode, and Raman spectroscopy. Six structure refinements have been obtained at different temperatures: 295.5, 248.0, 198.0, 148.0, 98.0, and 296.0 K (after the low-T experiments). The reflection conditions and the structure refinements prove that the crystal of thomsonite here investigated is orthorhombic with a = 13.0809(3), b = 13.0597 (3), c = 6.6051(1) Å, V = 1128.37 (14) Å 3 , and space group Pbmn, which differs from thomsonite from different localities reported in previous studies (with a ~ 13.1, b ~ 13.06, c ~ 13.2 Å, and space group Pncn). The refined bond distances suggest that the Si/Al-distribution in the tetrahedral framework is fully "disordered," giving rise to the halving of the c axis relative to that found in "ordered" thomsonites. The extra-framework population consists of: (1) one site about 50% occupied by Ca (labeled as "Ca"); (2) one site occupied by Na (~70%) and Ca (~30%) (labeled as "Na"); and (3) three water molecule sites ("W1," "W2," "W3"). The structure refinements allowed the location of all the proton sites, and the hydrogen-bonding scheme in the structure is provided. The low-temperature refinements show no significant change in the structure within the T-range investigated. The evolution of the unit-cell volume with T exhibits a continuous and linear trend, without any evident thermo-elastic anomaly, with thermal expansion coefficients α V = V -1 ⋅∂V/∂T= 20(2)·10 -6 K -1 (between 98.0 and 295.5 K). A list with the principal Raman active modes is provided and a comparison with the vibrational modes previously found for "ordered" thomsonite is carried out.

show abstract

Lava stones from Neapolitan volcanic districts in the architecture of Campania region, Italy

Cited by 22 publications

References 24 publications

Radon Survey in Bank Buildings of Campania Region According to the Italian Transposition of Euratom 59/2013

Radon Survey in Bank Buildings of Campania Region According to the Italian Transposition of Euratom 59/2013

New petrographic and geochemical tracers for recognizing the provenance quarry of trachyte of the Euganean Hills, northeastern Italy

Crystal structure and low-temperature behavior of "disordered" thomsonite

Contact Info

Product

Resources

About