{"id":1273,"date":"2009-07-15T23:30:00","date_gmt":"2009-07-15T23:30:00","guid":{"rendered":"https:\/\/perezmedia.net\/ceruleanarc\/?p=1273"},"modified":"2026-01-16T01:48:55","modified_gmt":"2026-01-16T01:48:55","slug":"calcite-on-magnetite-09062103j","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/ceruleanarc\/2009\/07\/15\/calcite-on-magnetite-09062103j\/","title":{"rendered":"Calcite on Magnetite | 09062103J"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J1lg.jpg\" alt=\"\" class=\"wp-image-1274\" srcset=\"https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J1lg.jpg 800w, https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J1lg-300x300.jpg 300w, https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J1lg-150x150.jpg 150w, https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J1lg-768x768.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>The larger crystals on this rock are about 1 cm in length.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"835\" src=\"https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J2croplg.jpg\" alt=\"\" class=\"wp-image-1275\" srcset=\"https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J2croplg.jpg 800w, https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J2croplg-287x300.jpg 287w, https:\/\/perezmedia.net\/ceruleanarc\/wp-content\/uploads\/2026\/01\/geo09062103J2croplg-768x802.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Mineral Type<\/td><td>Calcite &#8211; CaCO<sub>3<\/sub><br>Magnetite (Matrix) &#8211; Fe<sup>+2<\/sup>Fe<sup>+3<\/sup><sub>2<\/sub>O<sub>4<\/sub><\/td><\/tr><tr><td>Size<\/td><td>15 x 16 x 8 cm<\/td><\/tr><tr><td>Collection ID<\/td><td>09062103J<\/td><\/tr><tr><td>Collection Location<\/td><td>Near Comstock Mine, Iron Springs County, Utah, USA<br>37:36.874 N 113:23.576 W<\/td><\/tr><tr><td>Collection Date<\/td><td>June 21, 2009<\/td><\/tr><tr><td>Testing Results<\/td><td><strong>Crystals:<\/strong><br>Acetic Acid: Positive Reaction<br>Streak: Colorless<br>Hardness: 3<strong>Magnetite:<\/strong><br>Magnetism: Positive, weak<br>Streak: Dark Gray<br>Hardness: 3-6<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The larger crystals on this rock are about 1 cm in length. Mineral Type Calcite &#8211; CaCO3Magnetite (Matrix) &#8211; Fe+2Fe+32O4 Size 15 x 16 x 8 cm Collection ID 09062103J Collection Location Near Comstock Mine, Iron Springs County, Utah, USA37:36.874 N 113:23.576 W Collection Date June 21, 2009 Testing Results Crystals:Acetic Acid: Positive ReactionStreak: ColorlessHardness: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1274,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[77,75,63,62],"class_list":["post-1273","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rocks-and-minerals","tag-calcite","tag-magnetite","tag-minerals","tag-rocks"],"_links":{"self":[{"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/posts\/1273","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/comments?post=1273"}],"version-history":[{"count":1,"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/posts\/1273\/revisions"}],"predecessor-version":[{"id":1276,"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/posts\/1273\/revisions\/1276"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/media\/1274"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/media?parent=1273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/categories?post=1273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/ceruleanarc\/wp-json\/wp\/v2\/tags?post=1273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}