{"product_id":"9-33g-diogenite-hed-meteorite-fragment-i-nwa-7977","title":"9.33g Diogenite Gemmy Green HED Pyroxenite Achondrite Meteorite I NWA 7977","description":"\u003cdiv\u003e\n\u003cstrong\u003eOn Offer:\u003c\/strong\u003e 9.33g fragment of NWA 7977 an exceptionally beautiful pyroxenite Diogenite HED achondrite meteorite composed of over 95% green \u003cmeta charset=\"utf-8\"\u003egemmy pyroxene crystals.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Diogenite (pyroxenite)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eLocation:\u003c\/strong\u003e Northwest Africa\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e 95% pyroxene\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eParent Body:\u003c\/strong\u003e Vesta or Vestoid\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDescription:\u003c\/strong\u003e 9.33 gram piece of an amazing diogenite HED meteorite almost entirely made of gemmy green pyroxene crystals. This is arguably one of the most beautiful diogenites ever recovered.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cb\u003eThe HED Meteorite Clan: \u003c\/b\u003e\u003cspan\u003epetrological evidence and data from NASA's \u003c\/span\u003e\u003ci\u003eDawn\u003c\/i\u003e\u003cspan\u003e mission indicate that nearly monomineralic ultramafic orthopyroxenite, olivine-bearing, and the much more rare harzburgitic, and dunite diogenites formed alongside each other. They likely originated as cumulates within localized magma chambers (plutons) situated across Vesta's lower crust and the lower-crust\/upper-mantle transition zone. While the eucrites represent more evolved plagioclase rich mafic upper to middle zone crustal material. The howardites were formed by impact mixing of the diogenitic and eucritic material both in situ and during ejection events.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe HED meteorites are so named for the three types of meteorites that comprise the group; \u003c\/span\u003eHowardite\u003cspan\u003e, Eucrite and \u003cstrong\u003eDiogenite\u003c\/strong\u003e. The Eucrite and Diogenite are meteorites with distinct chemistries, while the Howardite is a mix of the eucritic and diogenitic material. The HEDs are differentiated achondritic meteorites, thought to originate from the large differentiated asteroid 4 Vesta. Vesta is one of the only asteroids visible with the naked eye and low powered telescopes.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe Vesta parent body origin for the HED clan of meteorites is considered to have been conclusively established for many years. However, the late Dr. John Wasson, a planetary science researcher from UCLA had long held that the HED meteorite clan originated from another unknown Vesta-like asteroid that was blown apart long ago. This is because we also find a class of iron meteorites with nearly identical oxygen isotopes as the HED clan. This along with other research lead Dr. Wasson to conclude the HED clan of meteorites come from another differentiated V-type asteroid that was in a cataclysmic collision liberating part or all of its metal core along with the HED meteorites.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eHowever, this hypothesis does not necessarily rule out the possibility that a \"reaccreted\" Vesta and the smaller V-type asteroids collectively known as Vestoids along with the HED meteorites and the isotopically paired irons were all once part of a much larger dwarf planet prior to a massive collision with another large body. While most researchers consider the case mostly closed on this debate, the paradox of isotopically paired core metal raised by Dr. Wasson's hypothesis has not been resolved. This leaves some to speculate that perhaps we still have more to learn about this fascinating clan of achondrite meteorites and even Vesta itself.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWhat you get:\u003c\/strong\u003e 9.33 NWA 7977 diogenite meteorite specimen as shown, membrane storage\/display box, \u0026amp; signed Certificate of Authenticity.\u003c\/div\u003e\n\u003cdiv\u003eWe offer a 100% no questions asked 30 day return policy.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eSEE OFFICIAL METEORITICAL SOCIETY ENTRY BELOW\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ctable border=\"1\" id=\"maintable\" cellpadding=\"4\" cellspacing=\"0\" class=\"tablefat\"\u003e\n\u003ccaption\u003e\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr valign=\"top\"\u003e\n\u003cth class=\"insidehead\" colspan=\"2\"\u003e\u003cspan\u003e\u003cb\u003eNorthwest Africa 7977\u003c\/b\u003e\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd class=\"inside\"\u003e\u003cbig\u003eBasic information\u003c\/big\u003e\u003c\/td\u003e\n\u003ctd class=\"inside\"\u003e\n\u003cspan\u003e\u003cb\u003eName:\u003c\/b\u003e Northwest Africa 7977\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e     This is an OFFICIAL meteorite name.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cb\u003eAbbreviation:\u003c\/b\u003e NWA 7977\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eObserved fall:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003eNo\u003cbr\u003e\u003cb\u003eYear found:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003e2013\u003cbr\u003e\u003cb\u003eCountry:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003eMorocco\u003cbr\u003e\u003cb\u003e\u003cspan\u003eMass:\u003c\/span\u003e\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e3.4 kg\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd class=\"inside\"\u003e\u003cbig\u003eClassification\u003cbr\u003e  history:\u003c\/big\u003e\u003c\/td\u003e\n\u003ctd class=\"inside\"\u003e\n\u003ctable border=\"0\" cellspacing=\"0\" summary=\"used for layout\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeteoritical Bulletin:  \u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.lpi.usra.edu\/meteor\/docs\/mb102.pdf\" title=\"Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015\"\u003eMB 102\u003c\/a\u003e\u003ca\u003e  \u003c\/a\u003e\n\u003c\/td\u003e\n\u003ctd\u003e(2013)  \u003c\/td\u003e\n\u003ctd\u003eDiogenite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eRecommended:  \u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cb\u003eDiogenite\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e   \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003eThis is 1 of 442 approved meteorites classified as Diogenite.  \u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd class=\"inside\"\u003e\u003cbig\u003eComments:\u003c\/big\u003e\u003c\/td\u003e\n\u003ctd class=\"inside\"\u003eApproved 12 Sep 2013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd class=\"inside\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003e\u003cspan\u003eWriteup\u003c\/span\u003e\u003c\/big\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"inside\"\u003e\n\u003cdiv\u003e\n\u003cu\u003e\u003c\/u\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"writeup\"\u003e\n\u003cbig\u003e\u003cu\u003eWriteup from\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.lpi.usra.edu\/meteor\/docs\/mb102.pdf\"\u003eMB 102:\u003c\/a\u003e\u003c\/u\u003e\u003c\/big\u003e\u003cbr\u003e\n\u003cdiv\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eNorthwest Africa 7977\u003c\/strong\u003e (NWA 7977)\u003c\/p\u003e\n\u003cp class=\"MBIndent\"\u003eMorocco\u003c\/p\u003e\n\u003cp class=\"MBIndent\"\u003ePurchased: 2013\u003c\/p\u003e\n\u003cp class=\"MBIndent\"\u003eClassification: HED achondrite (Diogenite)\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eHistory\u003c\/strong\u003e: Purchased by Brahim Tahiri from a Moroccan hunter and sent to Sean Tutorow for classification, 2012.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003ePhysical characteristics\u003c\/strong\u003e: Numerous matching fragments of the original mass, friable with coarse grained gemmy green pyroxenes, some light tan desert coating present.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003ePetrography\u003c\/strong\u003e: (C. Agee,\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eUNM\u003c\/i\u003e) Microprobe examination of a polished mount shows approximately 95% pyroxene, minor iron metal, chromite, troilite, and silica.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eGeochemistry\u003c\/strong\u003e: (C. Agee and N. Muttik,\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eUNM\u003c\/i\u003e) Low Ca-pyroxene Fs\u003csub\u003e28.4±0.3\u003c\/sub\u003eWo\u003csub\u003e3.5±0.7\u003c\/sub\u003e, Fe\/Mn=29±1 n=14.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e: Achondrite (diogenite). Equilibrated, uniform pyroxene compositions.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eSpecimens\u003c\/strong\u003e: Two pieces, 33.75 g and 22.1 g, including a probe mount, on deposit at\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eUNM\u003c\/i\u003e, Sean Tutorow holds the main mass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd class=\"inside\"\u003e\u003cbig\u003eData from:\u003cbr\u003e  \u003ca href=\"https:\/\/www.lpi.usra.edu\/meteor\/docs\/mb102.pdf\"\u003eMB102\u003c\/a\u003e\u003cbr\u003e  Table 0\u003cbr\u003e  Line 0:\u003c\/big\u003e\u003c\/td\u003e\n\u003ctd class=\"inside\"\u003e\n\u003ctable border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003ePlace of purchase:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eMorocco\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eDate:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eP 2013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eMass (g):\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e3403\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003ePieces:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eMany fragments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eClass:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eDiogenite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eFerrosilite (mol%):\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e28.4±0.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eWollastonite (mol%):\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5±0.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eClassifier:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eC. Agee, UNM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eType spec mass (g):\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e55.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eType spec location:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eUNM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eMain mass:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eSean Tutorow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cb\u003eComments:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eField name G-382; submitted by C. Agee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Books by splitShops","offers":[{"title":"Default Title","offer_id":50978078752993,"sku":"NWA7977_26_9.33_01","price":280.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1185\/2762\/files\/Meteorite-Top-Diogenite-NWA7977_Meteorite-Top-Diogenite-NWA7977_NWA7977_26_x_01_6.jpg?v=1791927510","url":"https:\/\/topmeteorite.com\/products\/9-33g-diogenite-hed-meteorite-fragment-i-nwa-7977","provider":"Top Meteorite","version":"1.0","type":"link"}