{"id":113,"date":"2025-10-21T21:53:25","date_gmt":"2025-10-21T21:53:25","guid":{"rendered":"https:\/\/bergslagenmetals.com\/?p=113"},"modified":"2025-11-15T16:24:33","modified_gmt":"2025-11-15T16:24:33","slug":"what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals","status":"publish","type":"post","link":"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/","title":{"rendered":"What exactly is Alum Shale and why does it contain so many metals?"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<p>Alum shale is a dark, fine-grained sedimentary rock formed about 500 million years ago from clay, organic matter, and volcanic ash on the sea floor. Over time, chemical processes enriched it with metals like vanadium, uranium, molybdenum, nickel, zinc, and copper.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:40%\">\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a4fdbdb43d6f&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a4fdbdb43d6f\" class=\"wp-block-image size-large is-resized wp-lightbox-container\"><img fetchpriority=\"high\" decoding=\"async\" width=\"684\" height=\"1024\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/bergslagenmetals.com\/wp-content\/uploads\/2025\/10\/Alum-Shale-684x1024.webp\" alt=\"\" class=\"wp-image-664\" style=\"width:223px;height:auto\" srcset=\"https:\/\/bergslagenmetals.com\/wp-content\/uploads\/2025\/10\/Alum-Shale-684x1024.webp 684w, https:\/\/bergslagenmetals.com\/wp-content\/uploads\/2025\/10\/Alum-Shale-200x300.webp 200w, https:\/\/bergslagenmetals.com\/wp-content\/uploads\/2025\/10\/Alum-Shale-768x1149.webp 768w, https:\/\/bergslagenmetals.com\/wp-content\/uploads\/2025\/10\/Alum-Shale-1026x1536.webp 1026w, https:\/\/bergslagenmetals.com\/wp-content\/uploads\/2025\/10\/Alum-Shale.webp 1210w\" sizes=\"(max-width: 684px) 100vw, 684px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Close up photo of Alum Shale<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alum shale is a dark, fine-grained sedimentary rock formed about 500 million years ago from clay, organic matter, and volcanic ash on the sea floor. Over time, chemical processes enriched it with metals like vanadium, uranium, molybdenum, nickel, zinc, and copper.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[12],"tags":[],"class_list":["post-113","post","type-post","status-publish","format-standard","hentry","category-mining-waste-management"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What exactly is Alum Shale and why does it contain so many metals? - Bergslagen Metals<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What exactly is Alum Shale and why does it contain so many metals? - Bergslagen Metals\" \/>\n<meta property=\"og:description\" content=\"Alum shale is a dark, fine-grained sedimentary rock formed about 500 million years ago from clay, organic matter, and volcanic ash on the sea floor. Over time, chemical processes enriched it with metals like vanadium, uranium, molybdenum, nickel, zinc, and copper.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/\" \/>\n<meta property=\"og:site_name\" content=\"Bergslagen Metals\" \/>\n<meta property=\"article:published_time\" content=\"2025-10-21T21:53:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-15T16:24:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bergslagenmetals.com\/wp-content\/uploads\/2025\/10\/Alum-Shale.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1210\" \/>\n\t<meta property=\"og:image:height\" content=\"1811\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"ohajgiejlg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"ohajgiejlg\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/\"},\"author\":{\"name\":\"ohajgiejlg\",\"@id\":\"https:\/\/bergslagenmetals.com\/en\/#\/schema\/person\/aaab76edb45d94b8bbf5c343e8564303\"},\"headline\":\"What exactly is Alum Shale and why does it contain so many metals?\",\"datePublished\":\"2025-10-21T21:53:25+00:00\",\"dateModified\":\"2025-11-15T16:24:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/\"},\"wordCount\":59,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/bergslagenmetals.com\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/bergslagenmetals.com\/wp-content\/uploads\/2025\/10\/Alum-Shale-684x1024.webp\",\"articleSection\":[\"Mining &amp; Waste Management\"],\"inLanguage\":\"en-CA\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/\",\"url\":\"https:\/\/bergslagenmetals.com\/en\/what-exactly-is-alum-shale-and-why-does-it-contain-so-many-metals\/\",\"name\":\"What exactly is Alum Shale and why does it contain so many metals? 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