{"id":240362,"date":"2025-09-06T02:01:15","date_gmt":"2025-09-06T00:01:15","guid":{"rendered":"https:\/\/stapelvanstenen.nl\/?p=240362"},"modified":"2025-09-06T02:01:19","modified_gmt":"2025-09-06T00:01:19","slug":"exhibition-pristine-minerals-stack-of-stones","status":"publish","type":"post","link":"https:\/\/stapelvanstenen.nl\/en\/exhibition-pristine-minerals-stack-of-stones\/","title":{"rendered":"Exhibition Pristine Minerals &amp; Stack of Stones"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>International Mineral Show Rijswijk (NL) &#8211; March 22 &amp; 23, 2025<\/strong><\/h2>\n\n\n\n<p>For the <a href=\"https:\/\/internationalemineralenbeurs.nl\/en\/\" data-type=\"link\" data-id=\"https:\/\/internationalemineralenbeurs.nl\/en\/\" target=\"_blank\" rel=\"noopener\">international mineral show in Rijswijk (NL)<\/a> in March 2025, <strong>Ed <\/strong>from<strong> <a href=\"https:\/\/pristineminerals.com\/\" data-type=\"link\" data-id=\"https:\/\/pristineminerals.com\/\" target=\"_blank\" rel=\"noopener\">Pristine Minerals<\/a><\/strong> and <strong>Rolf <\/strong>of<strong> Stack of Stones<\/strong> have put together a special exhibition with minerals from <strong>India<\/strong> and the <strong>pegmatites <\/strong>of<strong> Afghanistan <\/strong>and<strong> Pakistan<\/strong>. Watch a video impression of the exhibition and read the texts with background information below.  <\/p>\n\n\n\n<p>The minerals in this exhibit show how geological conditions determine which minerals form in a particular location. <strong>India<\/strong> is known worldwide for the beautiful <strong>zeolites<\/strong> that grow in the cavities of the ancient lava layers of the <strong>Deccan Traps<\/strong>. From the <strong>pegmatites<\/strong> of <strong>Afghanistan and Pakistan<\/strong> come unique crystals such as <strong>aquamarine, topaz and tourmaline<\/strong>. <\/p>\n\n\n\n<p>Besides well-known species, <strong>less common and unique minerals<\/strong> were also on display. A must-see for any mineral lover! Are you interested in a mineral passing by? The pieces from the exhibit and more such minerals are available for purchase through Pristine Minerals&#8217; <a href=\"https:\/\/pristineminerals.com\/\" data-type=\"link\" data-id=\"https:\/\/pristineminerals.com\/\" target=\"_blank\" rel=\"noopener\">website<\/a> or their <a href=\"https:\/\/www.facebook.com\/PristineMinerals\" data-type=\"link\" data-id=\"https:\/\/www.facebook.com\/PristineMinerals\" target=\"_blank\" rel=\"noopener\">Facebook page<\/a>.    <\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Expositie Mineralenbeurs Rijswijk\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/D43GRUU5efg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Minerals from India<\/strong><\/h2>\n\n\n\n<p>India is known for a <strong>huge variety<\/strong> of minerals (as many as <strong>663<\/strong> recorded in <a href=\"https:\/\/www.mindat.org\/loc-16773.html\" data-type=\"link\" data-id=\"https:\/\/www.mindat.org\/loc-16773.html\" target=\"_blank\" rel=\"noopener\">Mindat<\/a>), of which the <strong>secondary minerals <\/strong>from the<strong> Deccan Traps<\/strong> are particularly world-famous. This vast volcanic area in northwest India contains basalt strata in which cavities have formed, ideal for the growth of crystals. The circulation of <strong>hydrothermal fluids<\/strong> dissolves minerals in the volcanic rock and these later crystallize in the cavities as the water cools and evaporates.  <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-Deccan-Traps-India.jpg\" alt=\"\" class=\"wp-image-235911\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-Deccan-Traps-India.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-Deccan-Traps-India-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-Deccan-Traps-India-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-Deccan-Traps-India-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-Deccan-Traps-India-600x405.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<p>The best known minerals from the Deccan Traps area are <strong>zeolites<\/strong> such as <strong>heulandite<\/strong>, <strong>mesolite<\/strong>, <strong>scolecite<\/strong>, <strong>stilbite<\/strong> and <strong>thomsonite<\/strong>, often in combination with <strong>apophyllite<\/strong>, <strong>prehnite<\/strong>, <strong>okenite<\/strong>, <strong>calcite<\/strong> and <strong>quartz<\/strong>. We also find some unusual minerals here, such as <strong>stellerite<\/strong> and <strong>powellite<\/strong>. Not to mention the strikingly bright blue <strong>cavansite<\/strong> and <strong>pentagonite<\/strong> from Wagholi.  <\/p>\n\n\n\n<p>In addition to the Deccan Traps, India is also home to other unusual minerals from other locations, such as <strong>amethyst<\/strong> from Karur and the rare <strong>quartz with hematite phantoms<\/strong> (&#8220;<em>Sunset quartz<\/em>&#8220;) from Telangana. These unique combinations make India one of the most fascinating countries for mineral lovers and collectors. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Zeolite minerals from the<\/strong> <strong>Deccan Traps, India<\/strong><\/h2>\n\n\n\n<p><strong>Zeolites<\/strong> belong to the <strong>tectosilicates<\/strong>, a group of minerals with a three-dimensional network of <strong>silicon<\/strong>, <strong>aluminum<\/strong> and <strong>oxygen atoms<\/strong>. These atoms form quadrilaterals that together create a <strong>porous crystal structure<\/strong> consisting of channels and cages. These spaces contain <strong>water molecules<\/strong> and exchangeable ions such as <strong>sodium<\/strong>, <strong>calcium<\/strong> and <strong>potassium<\/strong>. This unique structure allows zeolites to absorb and release moisture and exchange ions. When heated, the water present evaporates, which explains the name: zeolite comes from the Greek \u03b6\u03ad\u03c9 (z\u00e9\u014d, &#8220;boiling&#8221;) and \u03bb\u03af\u03b8\u03bf\u03c2 (lithos, &#8220;stone&#8221;).    <\/p>\n\n\n\n<p>Zeolites are mainly found in <strong>volcanic rocks<\/strong>, where they form as <strong>secondary minerals<\/strong> by the conversion of pre-existing rocks. They usually form through the deposition of dissolved elements from <strong>hydrothermal fluids<\/strong>. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/scoleciet-heulandiet-stilbiet-india.jpg\" alt=\"\" class=\"wp-image-235913\" style=\"width:800px;height:auto\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/scoleciet-heulandiet-stilbiet-india.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/scoleciet-heulandiet-stilbiet-india-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/scoleciet-heulandiet-stilbiet-india-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/scoleciet-heulandiet-stilbiet-india-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/scoleciet-heulandiet-stilbiet-india-600x405.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\"><em>scolecite with stilbite on heulandite<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<p>About fifty natural zeolites are known, in addition to over two hundred synthetic varieties. Well-known zeolites from the Deccan Traps area include <strong>stilbite<\/strong>, <strong>heulandite<\/strong>, <strong>chabazite<\/strong>, <strong>thomsonite<\/strong>, <strong>laumontite<\/strong>, <strong>mordenite<\/strong>, <strong>mesolite<\/strong> and <strong>scolecite<\/strong>. They often grow together with <strong>apophyllite<\/strong>, <strong>calcite<\/strong>, <strong>cavansite<\/strong>, <strong>prehnite<\/strong>, <strong>gyrolite<\/strong>, <strong>quartz<\/strong> and <strong>clay minerals<\/strong>.  <\/p>\n\n\n\n<p>Sources:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ottens, B. (2024). <em>India, the secondary minerals from the Deccan Volcanic Province<\/em>. Munich: Christian Weise Verlag. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Minerals from pegmatites<\/h2>\n\n\n\n<p><strong>Pegmatites<\/strong> form in the final stage of magma solidification, when much of the molten rock has already crystallized into granite, for example. This leaves in the remaining magma <strong>rare elements<\/strong> such as lithium, beryllium, niobium and tantalum, which do not fit into the previously formed minerals in the granite. Slow cooling allows <strong>large crystals<\/strong> to form, sometimes up to 10-15 meters long.  <\/p>\n\n\n\n<p>Pegmatite occurrences are generally small, usually no longer than a <strong>few hundred meters<\/strong> and often much smaller. Pegmatite bodies often exhibit <strong>mineralogical zoning<\/strong>, where the composition and size of minerals changes from the outside to the core. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/mineralization-zones-in-pegmatite-body.jpg\" alt=\"\" class=\"wp-image-235916\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/mineralization-zones-in-pegmatite-body.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/mineralization-zones-in-pegmatite-body-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/mineralization-zones-in-pegmatite-body-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/mineralization-zones-in-pegmatite-body-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/mineralization-zones-in-pegmatite-body-600x405.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<p>The outer <strong>edge zone<\/strong> is usually fine-grained (granite) and only a few centimeters thick. This is followed by the <strong>wall zone <\/strong>several meters thick, where the crystals can become much larger, sometimes up to 30 cm long. This zone often contains much quartz, feldspar and mica, with sometimes beryl and tourmaline. In the <strong>intermediate zone<\/strong>, the crystals grow even larger and may include rare minerals such as beryl, spodumene, tourmaline, columbite, pollucite and lithic phosphates. The <strong>core<\/strong> of many pegmatites consists almost entirely of quartz.    <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Minerals from the pegmatites of<\/strong> <strong>Northern Afghanistan<\/strong><\/h2>\n\n\n\n<p>Northern Afghanistan, particularly the regions of <strong>Nuristan<\/strong>, <strong>Badakhshan<\/strong> and <strong>Laghman<\/strong>, is home to some of the richest pegmatite fields in the world. Important deposits include <strong>Paprok<\/strong>, <strong>Pech Valley<\/strong> and <strong>Nilaw-Kulam<\/strong>, which are home to numerous gemstones and rare minerals. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-pegmatiet-voorkomens-afghanistan-2.jpg\" alt=\"kaart pegmatiet voorkomens afghanistan (2)\" class=\"wp-image-235918\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-pegmatiet-voorkomens-afghanistan-2.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-pegmatiet-voorkomens-afghanistan-2-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-pegmatiet-voorkomens-afghanistan-2-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-pegmatiet-voorkomens-afghanistan-2-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/kaart-pegmatiet-voorkomens-afghanistan-2-600x405.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/div>\n\n\n<p>Notable finds include <strong>aquamarine<\/strong>, <strong>morganite<\/strong>, pink and green <strong>tourmaline<\/strong> (elba\u00efet), <strong>kunzite<\/strong>, <strong>topaz<\/strong>, <strong>fluorapatite<\/strong>, <strong>pollucite<\/strong>, <strong>columbite<\/strong>, <strong>beryllonite<\/strong> and <strong>spessartine<\/strong>. Pegmatites in this region show distinct mineralogical zoning, with the inner zones often containing lithium-containing minerals and phosphates. <\/p>\n\n\n\n<p><strong>Paprok<\/strong> is known for deep-colored <strong>tourmaline<\/strong>, while <strong>Pech Valley<\/strong> provides large crystals of <strong>kunzite<\/strong> and <strong>morganite<\/strong>. <strong>Nilaw-Kulam<\/strong> is known for <strong>columbite<\/strong>, an important source of niobium.<\/p>\n\n\n\n<p>Sources:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Afghanistan Geological Survey (n.d.). <em>Minerals in Afghanistan<\/em>. [online: <a href=\"https:\/\/nora.nerc.ac.uk\/id\/eprint\/10924\/1\/RareMetals_A4.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/nora.nerc.ac.uk\/id\/eprint\/10924\/1\/RareMetals_A4.pdf]<\/a> <\/li>\n\n\n\n<li>Bariand, P., &amp; Poullen, J. (2017). <em>Rare metals and minerals in Afghanistan<\/em>. Mineralogical Record, 48(5), 765-784. <\/li>\n\n\n\n<li>Kazmi, A. H., &amp; Snee, L. W. (2015). <em>Pegmatites of Afghanistan: Geological setting, mineralogy, and economic potential<\/em>. Arabian Journal of Geosciences, 8(9), 6251-6270. <\/li>\n\n\n\n<li>Weise, C. (2003). <em>Noble Steine vom Dach der Welt: extraLapis No. 24 &#8211; Afghanistan und Pakistan<\/em>. Christian Weise Verlag, Munich. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Minerals from the pegmatites of<\/strong> <strong>North Pakistan<\/strong><\/h2>\n\n\n\n<p>The main pegmatite deposits in the Gilgit-Baltistan region are in the <strong>Hunza Valley<\/strong>, the <strong>Haramosh Mountains<\/strong> and the <strong>Shigar Valley<\/strong>. These pegmatites penetrate older metamorphic rocks of the <em>Karakoram Metamorphic Complex (KMC)<\/em>. Geologically, these pegmatites are related to the collision between the Indian and Eurasian plates and the <strong>formation of the Himalayas<\/strong>. The age of these pegmatites varies between <strong>1 and 23 million years<\/strong>. They are characterized by their rich mineral content and are economically important.    <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/geological-map-pegmatites-northern-pakistan.jpg\" alt=\"geological map pegmatites northern pakistan\" class=\"wp-image-235920\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/geological-map-pegmatites-northern-pakistan.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/geological-map-pegmatites-northern-pakistan-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/geological-map-pegmatites-northern-pakistan-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/geological-map-pegmatites-northern-pakistan-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/geological-map-pegmatites-northern-pakistan-600x405.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p><strong>Aquamarine<\/strong>, <strong>morganite<\/strong>, <strong>goshenite<\/strong>, colorless to yellow <strong>topaz<\/strong>, green and pink <strong>fluorite<\/strong>, <strong>tourmaline<\/strong>, <strong>garnet<\/strong> and <strong>fluorapatite<\/strong> have been found in this region, usually in combination with quartz and feldspar. In addition to the pegmatites themselves, alpine fissure mineralizations are also present, in which <strong>quartz<\/strong>, <strong>axinite<\/strong> and <strong>epidote<\/strong> may occur. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250116-02-Muscovite-on-Aquamarine-a-nb.jpg\" alt=\"\" class=\"wp-image-235905\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250116-02-Muscovite-on-Aquamarine-a-nb.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250116-02-Muscovite-on-Aquamarine-a-nb-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250116-02-Muscovite-on-Aquamarine-a-nb-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250116-02-Muscovite-on-Aquamarine-a-nb-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250116-02-Muscovite-on-Aquamarine-a-nb-600x405.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\"><em>huge aquamarine with muscovite measuring 28 cm and 3.7 kg<\/em> <em>from Nagar, Pakistan<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<p>Sources:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Agheem, H. (2015).  <em>Petrogenetic evolution of pegmatites in the Shigar Valley, Karakoram, North Pakistan.<\/em>  Arabian Journal of Geosciences. [Online: <a href=\"https:\/\/www.researchgate.net\/publication\/275521468_Petrogenetic_evolution_of_pegmatites_of_the_Shigar_Valley\" target=\"_blank\" rel=\"noopener\">https:\/\/www.researchgate.net\/publication\/275521468_Petrogenetic_evolution_of_pegmatites_of_the_Shigar_Valley]<\/a> <\/li>\n\n\n\n<li>Weise, C. (2003). <em>Noble Steine vom Dach der Welt: extraLapis No. 24 &#8211; Afghanistan und Pakistan<\/em>. Christian Weise Verlag, Munich. <\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Rare minerals from the pegmatites<\/strong> <strong>of Afghanistan and Pakistan<\/strong><\/h2>\n\n\n\n<p>Besides the familiar gemstones, the pegmatites of Afghanistan and Pakistan also contain an array of rare minerals, often rich in elements such as <strong>tantalum<\/strong>, <strong>cesium<\/strong>, <strong>niobium<\/strong>, <strong>tin<\/strong>, <strong>lithium<\/strong> and <strong>phosphorus<\/strong>.<\/p>\n\n\n\n<p>An important example is <strong>columbite<\/strong>, one of the most common niobium-containing minerals in this region. In fact, many of the specimens from these regions designated as <strong>&#8220;tantalite<\/strong>&#8221; turn out to be columbite after analysis. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250206-01-Wodginite-d.jpg\" alt=\"\" class=\"wp-image-235907\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250206-01-Wodginite-d.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250206-01-Wodginite-d-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250206-01-Wodginite-d-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250206-01-Wodginite-d-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/250206-01-Wodginite-d-600x405.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\"><em>another rare mineral from the columbite supergroup: <strong>vodginite<\/strong>, a tin-manganese tantalate<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<p>Rare phosphates also occur, such as <strong>eosphorite<\/strong>, an iron-manganese phosphate found in the intermediate zones of pegmatites, often in combination with other phosphates.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/eosphorite-childrenite-rose-quartz.jpg\" alt=\"eosphorite-childrenite rose quartz\" class=\"wp-image-235909\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/eosphorite-childrenite-rose-quartz.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/eosphorite-childrenite-rose-quartz-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/eosphorite-childrenite-rose-quartz-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/eosphorite-childrenite-rose-quartz-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/eosphorite-childrenite-rose-quartz-600x405.jpg 600w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/eosphorite-childrenite-rose-quartz-74x50.jpg 74w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\"><em>crystals of <strong>childrenite-eosphorite<\/strong> on pink quartz and albite<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"540\" src=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/expositie-rijswijk-2.jpg\" alt=\"\" class=\"wp-image-235954\" srcset=\"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/expositie-rijswijk-2.jpg 800w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/expositie-rijswijk-2-300x203.jpg 300w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/expositie-rijswijk-2-768x518.jpg 768w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/expositie-rijswijk-2-624x421.jpg 624w, https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/expositie-rijswijk-2-600x405.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>For the international mineral show in Rijswijk, Ed of Pristine Minerals and Rolf of Stack of Stones have put together a special exhibit featuring minerals from India and the pegmatites of Afghanistan and Pakistan.<\/p>\n","protected":false},"author":4,"featured_media":235952,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[728],"tags":[2845,3232,809,807,3233,3234,3235],"class_list":["post-240362","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-for-the-enthusiast","tag-afghanistan-en","tag-india-en","tag-international-minerals-fair-rijswijk","tag-mineral-fair","tag-pakistan-en","tag-pegmatite","tag-zeolites",""],"jetpack_featured_media_url":"https:\/\/stapelvanstenen.nl\/wp-content\/uploads\/2025\/03\/expositie-rijswijk-1.jpg","_links":{"self":[{"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/posts\/240362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/comments?post=240362"}],"version-history":[{"count":3,"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/posts\/240362\/revisions"}],"predecessor-version":[{"id":240370,"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/posts\/240362\/revisions\/240370"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/media\/235952"}],"wp:attachment":[{"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/media?parent=240362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/categories?post=240362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stapelvanstenen.nl\/en\/wp-json\/wp\/v2\/tags?post=240362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}