{"id":54034,"date":"2025-06-03T17:00:00","date_gmt":"2025-06-03T15:00:00","guid":{"rendered":"https:\/\/www.ruschmineralen.nl\/product\/5856-prehniet-geluksflesje\/"},"modified":"2026-04-13T15:36:21","modified_gmt":"2026-04-13T13:36:21","slug":"5856-prehnit-glucksflasche","status":"publish","type":"product","link":"https:\/\/www.ruschmineralen.nl\/de\/produkt\/5856-prehnit-glucksflasche\/","title":{"rendered":"Prehnit-Gl\u00fccksflasche"},"content":{"rendered":"<h2>Prehnit-Gl\u00fccksflasche aus China<\/h2>\n<p><h3>Prehnit<\/h3>\n<p><a href=\"https:\/\/www.ruschmineralen.nl\/de\/typ\/prehnit\/\" target=\"_blank\">Prehnit<\/a> ist ein blassgr\u00fcnes bis gelbgr\u00fcnes Mineral, das h\u00e4ufig in runden, kugelf\u00f6rmigen Aggregaten oder als Krustenablagerungen auftritt. Es hat einen glasigen bis perligen Glanz und ist teilweise durchscheinend. Die Farbe wird gew\u00f6hnlich durch Spuren von Eisen verursacht. Prehnit wird manchmal als Edelstein verwendet und ist bei Sammlern wegen seines unverwechselbaren Aussehens beliebt.<\/p>\n<p>Das Mineral wurde erstmals in S\u00fcdafrika entdeckt und ist nach dem niederl\u00e4ndischen Oberst Hendrik von Prehn benannt. Gr\u00f6\u00dfere Vorkommen gibt es in S\u00fcdafrika, Australien, Schottland, den Vereinigten Staaten und China. Prehnit bildet sich in der Regel in Hohlr\u00e4umen von Vulkangestein und ist ein Produkt hydrothermaler Prozesse. Seine chemische Formel lautet Ca\u2082Al(AlSi\u2083O\u2081\u2080)(OH)\u2082 und seine H\u00e4rte liegt zwischen 6 und 6,5 auf der Mohs-Skala.<\/p>\n<p><small><strong>Quellen: <\/strong><br \/><a href=\"https:\/\/www.mindat.org\/min-3277.html\" target=\"_blank\" rel=\"noopener\">Mindat.org<\/a>, <a href=\"https:\/\/www.gemdat.org\/gem-3277.html\" target=\"_blank\" rel=\"noopener\">Gemdat.org<\/a>, <a href=\"https:\/\/en.wikipedia.org\/wiki\/Prehnite\" target=\"_blank\" rel=\"noopener\">Wikipedia - Prehnit<\/a><\/small><\/p>\n<h3>Selenit<\/h3>\n<p><a href=\"https:\/\/www.ruschmineralen.nl\/de\/typ\/selenit\/\" target=\"_blank\">Selenit<\/a> ist eine klare bis durchscheinende Variante des Minerals Gips (CaSO\u2084-2H\u2082O). Er ist bekannt f\u00fcr seinen glasigen bis perligen Glanz und seine oft faserige Struktur. Eine h\u00e4ufige Form ist der Selenit, der einen Seidenglanz hat und in langen, faserigen Kristallen vorkommt. Trotz seines Namens hat Selenit nichts mit dem Element Selen zu tun; der Name leitet sich vom griechischen Wort f\u00fcr Mond ab, wegen seines weichen Glanzes.<\/p>\n<p>Selenit bildet sich in sediment\u00e4ren Umgebungen w\u00e4hrend der Verdunstung von Meerwasser und ist in L\u00e4ndern wie Mexiko, Marokko, den USA und Australien zu finden. Es ist ein weiches Mineral mit einer H\u00e4rte von 2 auf der Mohs-Skala, so dass es sich leicht von Hand bearbeiten l\u00e4sst. Fast der gesamte auf dem niederl\u00e4ndischen Markt verkaufte Selenit ist Satinspat; Selenit ist jedoch ein vom Markt akzeptierter Handelsname.<\/p>\n<p><small><strong>Quellen: <\/strong><br \/><a href=\"https:\/\/www.mindat.org\/min-8573.html\" target=\"_blank\" rel=\"noopener\">Mindat.org<\/a>, <a href=\"https:\/\/www.gemdat.org\/gem-8573.html\" target=\"_blank\" rel=\"noopener\">Gemdat.org<\/a>, <a href=\"https:\/\/en.wikipedia.org\/wiki\/Selenite_(mineral)\" target=\"_blank\" rel=\"noopener\">Wikipedia - Selenit<\/a><\/small><\/p>\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Prehnit-Gl\u00fccksflasche aus China<\/p>","protected":false},"featured_media":53886,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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