{"id":7303,"date":"2021-07-07T14:11:15","date_gmt":"2021-07-07T12:11:15","guid":{"rendered":"https:\/\/ssef.ch\/?p=7303"},"modified":"2022-11-02T15:19:21","modified_gmt":"2022-11-02T14:19:21","slug":"deep-purple-vesuviatine-from-pakistan","status":"publish","type":"post","link":"https:\/\/www.ssef.ch\/jp\/deep-purple-vesuviatine-from-pakistan\/","title":{"rendered":"Deep purple vesuviatine from Pakistan"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/ssef.ch\/wp-content\/uploads\/2021\/07\/424-Figure-1-1024x643.jpg\" alt=\"\" class=\"wp-image-7304\"\/><figcaption><strong>Figure 1: <\/strong>A sample of rough deep purple Vesuvianite (4 cm) from northern Pakistan and cabochon of 10.73 ct. Photo: H.A. H\u00e4nni <\/figcaption><\/figure>\n\n\n\n<p>by Prof. H.A. H\u00e4nni, first published in\u00a0<a href=\"https:\/\/ssef.ch\/wp-content\/uploads\/2020\/05\/facette-2020-web.pdf\">Facette 26<\/a> (May 2020) <\/p>\n\n\n\n<p>stan has a number\nof gemstone deposits\nthat are related\nto the collision of the\nIndian continent with the Eurasian plate, a\nconsequence of global plate tectonic movements.<\/p>\n\n\n\n<p>The gem-producing areas lie in a thrust zone known as Karakorum Suture\nZone. There, sediments from the Tethys\nSea were welded\non the Eurasian plate when the Indian continent collided\ninto Eurasia some 65 Mio years ago. Triassic carbonate sediments and oceanic crust were imbricated in a\ntectonic movement. Better known examples of gemstone formations from Pakistan are emerald, topaz,\nperidot and many more. Sannan\nSkarn, a green ornamental stone,\nis a more recent discovery (see H\u00e4nni in SSEF Facette No. 24).<\/p>\n\n\n\n<p>Recently, we got new material from Rainbow Minerals Ltd. (Peshawar) that turned out to be vesuvianite. Vesuviane is a complex calcium silicate that is known as facetable single crystals, but also as polycrystalline vesuvianite. Common colours are green to brown, and the colour giving element commonly is iron. Thorough chemical analyses by LA-ICP-TOF- MS revealed that the new material from Pakistan is coloured by traces of manganese and iron that lends the stone a deep purple colour (Fig. 1). Identification was straightforward and done by Raman spectroscopy. A summary chemical analysis by ED-XRF shows the chemical elements in a qualitative way, but does not provide a mineral formula. For the precise quantitative composition values of the samples, mass spectrometry was used. By scanning electron microscopy (SEM) tiny inclusions were found and identified as apatite. The described deep purple polycrystalline vesuvianite from Pakistan is translucent and can serve for cabochons and carvings. A more detailed description of this material will be published soon in gemmological journals in German, Chinese and English.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>by Prof. H.A. H\u00e4nni, first published in\u00a0Facette 26 (May 2020) stan has a number of gemstone deposits that are related to the collision of the Indian continent with the Eurasian plate, a consequence of global plate tectonic movements. The gem-producing areas lie in a thrust zone known as Karakorum Suture Zone. There, sediments from the [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":7304,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[626],"tags":[742,736],"library_category":[],"library_author":[],"class_list":["post-7303","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-blog","tag-gemmology","tag-othergemstones"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Deep purple vesuviatine from Pakistan - SSEF<\/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:\/\/www.ssef.ch\/deep-purple-vesuviatine-from-pakistan\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Deep purple vesuviatine from Pakistan - SSEF\" \/>\n<meta property=\"og:description\" content=\"by Prof. H.A. H\u00e4nni, first published in\u00a0Facette 26 (May 2020) stan has a number of gemstone deposits that are related to the collision of the Indian continent with the Eurasian plate, a consequence of global plate tectonic movements. The gem-producing areas lie in a thrust zone known as Karakorum Suture Zone. There, sediments from the [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ssef.ch\/deep-purple-vesuviatine-from-pakistan\/\" \/>\n<meta property=\"og:site_name\" content=\"SSEF\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-07T12:11:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-11-02T14:19:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2021\/07\/424-Figure-1-jpg.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1204\" \/>\n\t<meta property=\"og:image:height\" content=\"756\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Laurent Cartier\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Laurent Cartier\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/deep-purple-vesuviatine-from-pakistan\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/deep-purple-vesuviatine-from-pakistan\\\/\"},\"author\":{\"name\":\"Laurent Cartier\",\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/zh-hans\\\/#\\\/schema\\\/person\\\/c855f01c061d2c7b29f823eaee439288\"},\"headline\":\"Deep purple vesuviatine from Pakistan\",\"datePublished\":\"2021-07-07T12:11:15+00:00\",\"dateModified\":\"2022-11-02T14:19:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/deep-purple-vesuviatine-from-pakistan\\\/\"},\"wordCount\":315,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/zh-hans\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/deep-purple-vesuviatine-from-pakistan\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ssef.ch\\\/wp-content\\\/uploads\\\/2021\\\/07\\\/424-Figure-1-jpg.webp\",\"keywords\":[\"Gemmology\",\"Other Gemstones\"],\"articleSection\":[\"Research Blog\"],\"inLanguage\":\"jp\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/deep-purple-vesuviatine-from-pakistan\\\/\",\"url\":\"https:\\\/\\\/www.ssef.ch\\\/deep-purple-vesuviatine-from-pakistan\\\/\",\"name\":\"Deep purple vesuviatine from Pakistan - 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H\u00e4nni, first published in\u00a0Facette 26 (May 2020) stan has a number of gemstone deposits that are related to the collision of the Indian continent with the Eurasian plate, a consequence of global plate tectonic movements. The gem-producing areas lie in a thrust zone known as Karakorum Suture Zone. 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