{"id":25845,"date":"2019-12-21T20:45:45","date_gmt":"2019-12-21T09:45:45","guid":{"rendered":"http:\/\/www.tomgrimshaw.com\/tomsblog\/?p=25845"},"modified":"2019-12-21T20:45:48","modified_gmt":"2019-12-21T09:45:48","slug":"california-rainbow-obsidian-is-a-natural-wonder","status":"publish","type":"post","link":"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=25845","title":{"rendered":"California Rainbow Obsidian Is a Natural Wonder"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"357\" height=\"640\" src=\"http:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2019\/12\/Rainbow_Obsidian_Blade.jpg\" alt=\"Rainbow Obsidian Blade\" class=\"wp-image-25846\" srcset=\"https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2019\/12\/Rainbow_Obsidian_Blade.jpg 357w, https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2019\/12\/Rainbow_Obsidian_Blade-167x300.jpg 167w\" sizes=\"auto, (max-width: 357px) 100vw, 357px\" \/><\/figure>\n\n\n\n<p>Obsidian is dense volcanic glass, usually rhyolite in composition and typically black in color.  Obsidian with multicolored iridescence caused by inclusions of magnetite nanoparticles. Obsidian is often formed in rhyolite lava flows where the lava cools so fast that crystals do not have time to grow.<\/p>\n\n\n\n<p><a href=\"http:\/\/www.geologyin.com\/2017\/08\/california-rainbow-obsidian-is-natural.html\">http:\/\/www.geologyin.com\/2017\/08\/california-rainbow-obsidian-is-natural.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Obsidian is dense volcanic glass, usually rhyolite in composition and typically black in color. Obsidian with multicolored iridescence caused by inclusions of magnetite nanoparticles. Obsidian is often formed in rhyolite lava flows where the lava cools so fast that crystals do not have time to grow. http:\/\/www.geologyin.com\/2017\/08\/california-rainbow-obsidian-is-natural.html<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-25845","post","type-post","status-publish","format-standard","hentry","category-general-interest"],"_links":{"self":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/25845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25845"}],"version-history":[{"count":1,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/25845\/revisions"}],"predecessor-version":[{"id":25847,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/25845\/revisions\/25847"}],"wp:attachment":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}