{"product_id":"ci1-ivuna-fresh-fall-most-significant-carbonaceous-meteorite-name-giver-of-this-important-group","title":"CI1  Ivuna Fresh Fall, most significant carbonaceous meteorite, Name giver of this important group","description":"\u003cstyle\u003e[stylesheet-group=\"0\"]{}\nbody{margin:0;}\nbutton::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0;}\nhtml{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:rgba(0,0,0,0);}\ninput::-webkit-search-cancel-button,input::-webkit-search-decoration,input::-webkit-search-results-button,input::-webkit-search-results-decoration{display:none;}\n[stylesheet-group=\"1\"]{}\n.css-146c3p1{background-color:rgba(0,0,0,0.00);border:0 solid black;box-sizing:border-box;color:rgba(0,0,0,1.00);display:inline;font:14px -apple-system,BlinkMacSystemFont,\"Segoe 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class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1adg3ll r-1g7jtus r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eThe \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eIvuna meteorite\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e (CI1 classification) represents one of the most pristine and scientifically profound relics of the early Solar System available to researchers today. As the \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003etype specimen\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e for the exceptionally rare CI group of carbonaceous chondrites, it stands apart from other meteorites due to its \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eintense and pervasive aqueous alteration\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e that occurred on its ancient parent asteroid shortly after the formation of the planets.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1adg3ll r-1g7jtus r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eFalling on \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eDecember 16, 1938\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e, near the village of Ivuna in what is now Tanzania (close to Lake Rukwa), this witnessed fall delivered approximately \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e705 grams\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e of material, recovered soon after the event. The meteorite's composition is dominated by \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003efine-grained, hydrated sheet silicates\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e (primarily serpentine-group minerals and saponite), along with magnetite, carbonates, and sulfates—secondary phases that testify to prolonged interaction with liquid water at low temperatures (likely \u0026lt;150 °C) under relatively high water-to-rock ratios. Unlike many other carbonaceous chondrites, Ivuna shows \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eminimal\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e evidence of high-temperature chondrules or refractory inclusions, presenting instead an almost chondrule-free, matrix-dominated texture that closely approximates the \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eprimitive, unaltered bulk composition\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e of the solar nebula in terms of major and refractory elements.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1adg3ll r-1g7jtus r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eThis makes Ivuna meteorites extraordinarily valuable for several key areas of cosmochemistry and astrobiology:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eThey serve as a near-pristine proxy for the \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003evolatile-rich building blocks\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e from which the terrestrial planets (including Earth) accreted.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eTheir high content of \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eextraterrestrial water\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e (up to ~20 wt% bound in minerals) and organic compounds provides critical insights into the delivery of water and prebiotic molecules to early Earth.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eStudies of Ivuna help constrain models of \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003efluid-rock interactions\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e on water-rich C-type asteroids, including recent sample-return targets like Bennu and Ryugu.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eAs the least terrestrially contaminated CI1 specimen (with significant portions curated under inert atmosphere, notably at institutions such as the Natural History Museum in London and potentially related holdings in Vienna's NHM collection), it remains a benchmark for understanding both parent-body processes and the delicate preservation challenges of these friable, highly hydrated materials.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1adg3ll r-1x3r274 r-p1pxzi\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003eIn essence, a sample of the Ivuna meteorite—modest in size yet immense in implication—offers a direct window into the \u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-b88u0q r-1x3r274\"\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003ewet, chemically active\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"css-1jxf684 r-bcqeeo r-1ttztb7 r-qvutc0 r-poiln3 r-1x3r274\"\u003e conditions that prevailed in the outer protoplanetary disk over 4.56 billion years ago, making it a cornerstone specimen for any serious investigation into the origins of water, organics, and habitable worlds. Credit: Grok 4,2, ehh\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e","brand":"Erich's Cosmic-Power Rocks - Wholesale, Vienna, Österreich","offers":[{"title":"Default Title","offer_id":53552643473735,"sku":null,"price":54.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/9409\/6967\/files\/Ivuna9mg.jpg?v=1773935098","url":"https:\/\/fajq3r-hw.myshopify.com\/products\/ci1-ivuna-fresh-fall-most-significant-carbonaceous-meteorite-name-giver-of-this-important-group","provider":"Erich's Cosmic-Power Rocks - Wholesale, Vienna, Österreich","version":"1.0","type":"link"}