{"id":8057,"date":"2019-12-02T10:09:34","date_gmt":"2019-12-02T08:09:34","guid":{"rendered":"https:\/\/www.caraa.fr\/les-verres-2\/"},"modified":"2022-07-11T12:17:53","modified_gmt":"2022-07-11T10:17:53","slug":"glass","status":"publish","type":"post","link":"https:\/\/www.caraa.fr\/en\/glass\/","title":{"rendered":"Glass"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column width=&#8221;2\/3&#8243;][vc_column_text]<\/p>\n<h5>This category is also known under the classical term of &#8220;fire arts&#8221;. It includes glasses (coloured or not), stained-glass, porcelain, ceramic, terracotta, but also some siliceous materials which have not necessarily undergone intentional thermal metamorphosis: flint, obsidian, mosaics, &#8230;<\/h5>\n<ul>\n<li><b>The study of the matrix and fillers<\/b><\/li>\n<\/ul>\n<p>The analyses that we conduct at CARAA on such material are primarily intended to provide information on the composition of the siliceous matrix itself, its conservation status , the flux, and fillers that may have been added to it.<\/p>\n<ul>\n<li><b>A composition, a signature<\/b><\/li>\n<\/ul>\n<p>The identification of a particular pigment in the case of coloured objects or the characterization of distinctive mineral fillers allows to correlate with historical periods and therefore indirectly to date the period to which these pigments have been added.<\/p>\n<ul>\n<li><b>Understanding the alteration phenomena<br \/>\n<\/b><\/li>\n<\/ul>\n<p>The characterization of the alteration products of a siliceous material allows a proper restoration protocol that takes into account the harsh environments to which the object was submitted. The common alteration products on glasses or stained-glasses are carbonates, phosphates and potassium sulphates, sodium or magnesium (eg syngenite -K<sub>2<\/sub>Ca(SO<sub>4<\/sub>)<sub>2<\/sub>.H<sub>2<\/sub>O-).[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_column_text css=&#8221;.vc_custom_1656596466796{margin-bottom: 80px !important;}&#8221;]ngg_shortcode_0_placeholder[\/vc_column_text]<style type=\"text\/css\" data-type=\"the7_shortcodes-inline-css\">.blog-shortcode.blog-list-shortcode-id-99380b8528d31e1d8223a61203ee6c2a.content-bg-on.classic-layout-list article {\n  background: #e5dbc6;\n  box-shadow: none;\n}\n.blog-shortcode.blog-list-shortcode-id-99380b8528d31e1d8223a61203ee6c2a.dividers-on.classic-layout-list article {\n  margin-top: 5px;\n  padding-top: 0;\n}\n.blog-shortcode.blog-list-shortcode-id-99380b8528d31e1d8223a61203ee6c2a.dividers-on.classic-layout-list article:first-of-type {\n  margin-top: 0;\n  padding-top: 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margin: 5px 0 5px;\n  }\n  #page .blog-shortcode.blog-list-shortcode-id-99380b8528d31e1d8223a61203ee6c2a .entry-excerpt {\n    margin: 15px 0 0;\n  }\n  #page .blog-shortcode.blog-list-shortcode-id-99380b8528d31e1d8223a61203ee6c2a .post-details {\n    margin: 5px 0 10px;\n  }\n  #page .blog-shortcode.blog-list-shortcode-id-99380b8528d31e1d8223a61203ee6c2a .post-details.details-type-link {\n    margin-bottom: 2px;\n  }\n}<\/style><div class=\"articles-list blog-shortcode mode-list blog-list-shortcode-id-99380b8528d31e1d8223a61203ee6c2a classic-layout-list content-bg-on jquery-filter scale-img dt-icon-bg-off loading-effect-fade-in\" data-cur-page=\"1\" data-post-limit=\"-1\" data-pagination-mode=\"none\"><article class=\"post project-odd visible no-img post-8051 type-post status-publish format-standard hentry category-materials-en category-67 description-off\" data-name=\"Pigments\" data-date=\"2021-12-02T10:07:38+02:00\">\n\n<div class=\"post-entry-content\">\n\n\t<h3 class=\"entry-title\">\n\t\t<a href=\"https:\/\/www.caraa.fr\/en\/pigments\/\" title=\"Pigments\" rel=\"bookmark\">Pigments<\/a>\n\t<\/h3>\n\n\t\n\t\n\t\n<\/div><\/article><article class=\"post project-odd visible no-img post-8054 type-post status-publish format-standard hentry category-materials-en category-67 description-off\" data-name=\"Metals\" data-date=\"2020-12-02T10:04:24+02:00\">\n\n<div class=\"post-entry-content\">\n\n\t<h3 class=\"entry-title\">\n\t\t<a href=\"https:\/\/www.caraa.fr\/en\/metals\/\" title=\"Metals\" rel=\"bookmark\">Metals<\/a>\n\t<\/h3>\n\n\t\n\t\n\t\n<\/div><\/article><article class=\"post project-odd visible no-img post-8057 type-post status-publish format-standard hentry category-materials-en category-67 description-off\" data-name=\"Glass\" data-date=\"2019-12-02T10:09:34+02:00\">\n\n<div class=\"post-entry-content\">\n\n\t<h3 class=\"entry-title\">\n\t\t<a href=\"https:\/\/www.caraa.fr\/en\/glass\/\" title=\"Glass\" rel=\"bookmark\">Glass<\/a>\n\t<\/h3>\n\n\t\n\t\n\t\n<\/div><\/article><article class=\"post project-odd visible no-img post-8060 type-post status-publish format-standard hentry category-materials-en category-67 description-off\" data-name=\"Stones and Rocks\" data-date=\"2018-12-02T10:12:05+02:00\">\n\n<div class=\"post-entry-content\">\n\n\t<h3 class=\"entry-title\">\n\t\t<a href=\"https:\/\/www.caraa.fr\/en\/rocks\/\" title=\"Stones and Rocks\" rel=\"bookmark\">Stones and Rocks<\/a>\n\t<\/h3>\n\n\t\n\t\n\t\n<\/div><\/article><article class=\"post project-odd visible no-img post-8063 type-post status-publish format-standard hentry category-materials-en category-67 description-off\" data-name=\"Organic material\" data-date=\"2016-12-02T10:14:06+02:00\">\n\n<div class=\"post-entry-content\">\n\n\t<h3 class=\"entry-title\">\n\t\t<a href=\"https:\/\/www.caraa.fr\/en\/organics\/\" title=\"Organic material\" rel=\"bookmark\">Organic material<\/a>\n\t<\/h3>\n\n\t\n\t\n\t\n<\/div><\/article><article class=\"post project-odd visible no-img post-1249 type-post status-publish format-standard hentry category-materials-en category-67 description-off\" data-name=\"Toxic material\" data-date=\"2014-01-02T10:15:47+02:00\">\n\n<div class=\"post-entry-content\">\n\n\t<h3 class=\"entry-title\">\n\t\t<a href=\"https:\/\/www.caraa.fr\/en\/toxics\/\" title=\"Toxic material\" rel=\"bookmark\">Toxic material<\/a>\n\t<\/h3>\n\n\t\n\t\n\t\n<\/div><\/article><\/div>[\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column width=&#8221;2\/3&#8243;][vc_column_text] This category is also known under the classical term of &#8220;fire arts&#8221;. It includes glasses (coloured or not), stained-glass, porcelain, ceramic, terracotta, but also some siliceous materials which have not necessarily undergone intentional thermal metamorphosis: flint, obsidian, mosaics, &#8230; The study of the matrix and fillers The analyses that we conduct at CARAA&hellip;<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"_FSMCFIC_featured_image_caption":"","_FSMCFIC_featured_image_nocaption":null,"_FSMCFIC_featured_image_hide":null,"footnotes":""},"categories":[67],"tags":[],"class_list":["post-8057","post","type-post","status-publish","format-standard","hentry","category-materials-en","category-67","description-off"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Glass at CARAA<\/title>\n<meta name=\"description\" content=\"The experience at CARAA in the analysis of glass, ceramics, and siliceous materials (stained glasses, archaeological glass, enamel and porcelain, ...)\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.caraa.fr\/en\/glass\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Glass at CARAA\" \/>\n<meta property=\"og:description\" content=\"The experience at CARAA in the analysis of glass, ceramics, and siliceous materials (stained glasses, archaeological glass, enamel and porcelain, ...)\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.caraa.fr\/en\/glass\/\" \/>\n<meta property=\"og:site_name\" content=\"CARAA\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/LaboratoireCaraa\/\" \/>\n<meta property=\"article:published_time\" content=\"2019-12-02T08:09:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-07-11T10:17:53+00:00\" \/>\n<meta name=\"author\" content=\"abougard\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@CARAA_Center\" \/>\n<meta name=\"twitter:site\" content=\"@CARAA_Center\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"abougard\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/glass\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/glass\\\/\"},\"author\":{\"name\":\"abougard\",\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/#\\\/schema\\\/person\\\/14189abfeddca50e721e0a25b5f084c6\"},\"headline\":\"Glass\",\"datePublished\":\"2019-12-02T08:09:34+00:00\",\"dateModified\":\"2022-07-11T10:17:53+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/glass\\\/\"},\"wordCount\":287,\"publisher\":{\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/#organization\"},\"articleSection\":[\"Materials\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/glass\\\/\",\"url\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/glass\\\/\",\"name\":\"Glass at CARAA\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/#website\"},\"datePublished\":\"2019-12-02T08:09:34+00:00\",\"dateModified\":\"2022-07-11T10:17:53+00:00\",\"description\":\"The experience at CARAA in the analysis of glass, ceramics, and siliceous materials (stained glasses, archaeological glass, enamel and porcelain, ...)\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.caraa.fr\\\/en\\\/glass\\\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/\",\"name\":\"CARAA\",\"description\":\"Centre d&#039;Analyses et de Recherche en Art et Arch\u00e9ologie\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.caraa.fr\\\/en\\\/#organization\",\"name\":\"CARAA - 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