{"product_id":"42-22g-diogenite-meteorite-piece-i-hed-meteorite-from-asteroid-4-vesta-i-nwa-18094","title":"42.22g Diogenite Meteorite piece I HED Meteorite from Asteroid 4 Vesta I NWA 18094","description":"\u003cdiv\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOn Offer:\u003c\/strong\u003e 42.22g NWA 18094, \u003ci\u003eorthopyroxenite\u003c\/i\u003e diogenite HED achondrite meteorite. \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cstrong\u003eName:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNorthwest Africa 18094\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAbbreviation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNWA 18094\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eType:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eDiogenite\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eObserved fall:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eNo\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eYear found:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e2018\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCountry:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eMorocco\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 42.22 gram specimen of an amazing orthopyroxenite diogenite. This diogenite has a coarse grained texture of mostly low-Ca pyroxene with several large black chromite crystals visible throughout the cut surfaces. Only a single small 86 gram gray-green stone was found with a small amount of remnant glassy black fusion crust on one side. This specimen represents the remaining main mass of this classification after analysis with only one smaller end piece available.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eThe HED Meteorites:\u003c\/strong\u003e The HED meteorite group is so named for the three types of meteorites that comprise the group; Howardite, Eucrite and \u003cstrong\u003eDiogenite.\u003c\/strong\u003e The Eucrite and \u003cstrong\u003eDiogenite\u003c\/strong\u003e have distinct mineralogies, the Howardite is a breccia of the Eucrite and \u003cstrong\u003eDiogenite.\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eThe HEDs are differentiated achondritic meteorites thought to originate from Vesta, or smaller Vesta-like asteroids known as vestoids that were likely once part of a larger Vesta. The nearly monomineralic orthopyroxenite diogenites likely formed alongside olivine-bearing diogenites in the upper mantle of Vesta with, plutons, dikes and\/or batholiths of diogenitic material pushing into the eucritic crust prior to the ejection event. \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWhat you get:\u003c\/strong\u003e 42.22\u003cspan\u003e gram\u003c\/span\u003e NWA 18094 diogenite meteorite specimen as shown, \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\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eSEE OFFICIAL METEORITICAL SOCIETY ENTRY BELOW\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch1 style=\"text-align: center;\"\u003eNorthwest Africa 18094\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h1\u003e\n\u003cdiv class=\"container mb-4\"\u003e\n\u003ctable class=\"text-table th-left\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eBasic information\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003e\n\u003cp\u003e\u003cstrong\u003eName:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNorthwest Africa 18094 This is an OFFICIAL meteorite name.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAbbreviation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNWA 18094\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eObserved fall:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eNo\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eYear found:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e2018\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCountry:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eMorocco\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMass:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e86 g\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eClassification history:\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMeteoritical Bulletin,\u003cspan style=\"color: #404040;\"\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/doi.org\/10.1111\/maps.70157\" title=\"Gattacceca J., Grossman J. N., Weisberg M. M., Greshake A., Almeida N. V., Cartier C., Friedrich J. M., Goodrich C., Joy K. H., Schönbächler M., Schrader D. L., Yabuta H. and Zhang B. (2026) The Meteoritical Bulletin, No. 114. Meteoritics \u0026amp; Planetary Science 61, 942–946.\"\u003e\u003cspan style=\"color: #404040;\"\u003eMB 114\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e(2026):\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eDiogenite\u003cbr\u003e\u003cstrong\u003eRecommended:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDiogenite    \u003cbr\u003e\u003cbr\u003eThis is 1 of 596 approved meteorites classified as Diogenite.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eComments:\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003eApproved 5 Dec 2025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eWriteup\u003cspan\u003e \u003c\/span\u003e\n\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\" id=\"writeups\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWriteup from\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: #404040;\"\u003e\u003ca href=\"https:\/\/doi.org\/10.1111\/maps.70157\" style=\"color: #404040;\"\u003eMB 114:\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"writeup\"\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eNorthwest Africa 18094\u003c\/strong\u003e (NWA 18094)\u003c\/p\u003e\n\u003cp class=\"MBIndent\"\u003eMorocco\u003c\/p\u003e\n\u003cp class=\"MBIndent\"\u003ePurchased: 2018\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 from a meteorite dealer in Erfoud, Morocco, in 2018 by Kathryn O'Flynn and sold to Maria Aguayo later that same year. The stone was misplaced along with several other meteorites until it was rediscovered in a storage box with the other misplaced stones in 2025.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003ePhysical characteristics\u003c\/strong\u003e: A single gray-green stone with remnant glassy black fusion crust covering approximately 20% of the surface. Saw cut reveals a mottled gray interior with some black specks.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003ePetrography\u003c\/strong\u003e: (D. Dickens, LMAC ) This meteorite is a coarse-grained orthopyroxenite. It is a monomineralic rock composed of \u0026gt;98% equilibrated orthopyroxene. Chromite makes up \u0026lt;2% and is the only minor phase present. Chromite is found as either well-formed large grains up to 4 mm, or as μm to sub-μm inclusions in orthopyroxene.\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eGeochemistry\u003c\/strong\u003e: (D. Dickens, LMAC and A. S. Bell,\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eUColo\u003c\/i\u003e) Or\u003csub\u003e\u003c\/sub\u003ethopyroxene Fs\u003csub\u003e23.6±0.3\u003c\/sub\u003eWo\u003csub\u003e2.5±0.1\u003c\/sub\u003e, FeO\/MnO = 29±1 (n=13).\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e: Achondrite HED (Diogenite)\u003c\/p\u003e\n\u003cp class=\"MBNormal\"\u003e\u003cstrong\u003eSpecimens\u003c\/strong\u003e: Type specimen of 21 g at\u003cspan\u003e \u003c\/span\u003e\u003ci\u003eTCU\u003c\/i\u003e. Main mass with Issac Schroeder.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row\"\u003e\n\u003cth class=\"col-12 col-md-3 col-lg-2\"\u003eData from:\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/doi.org\/10.1111\/maps.70157\"\u003eMB114\u003c\/a\u003e\u003cbr\u003eTable 0 Line 0:\u003c\/th\u003e\n\u003ctd class=\"col-12 col-md-9 col-lg-10\"\u003e\n\u003cstrong\u003ePlace of purchase:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMorocco\u003cbr\u003e\u003cstrong\u003eDate:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eP 2018\u003cbr\u003e\u003cstrong\u003eMass (g):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e86\u003cbr\u003e\u003cstrong\u003ePieces:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1\u003cbr\u003e\u003cstrong\u003eClass:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDiogenite\u003cbr\u003e\u003cstrong\u003eShock stage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003elow\u003cbr\u003e\u003cstrong\u003eWeathering grade:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003elow\u003cbr\u003e\u003cstrong\u003eFerrosilite (mol%):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e23.6±0.3\u003cbr\u003e\u003cstrong\u003eWollastonite (mol%):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.5±0.1\u003cbr\u003e\u003cstrong\u003eClassifier:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eD. Dickens, LMAC\u003cbr\u003e\u003cstrong\u003eType spec mass (g):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e17.4\u003cbr\u003e\u003cstrong\u003eType spec location:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTCU\u003cbr\u003e\u003cstrong\u003eMain mass:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMaria Aguayo\u003cbr\u003e\u003cstrong\u003eComments:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eField name LMAC 500; submitted by Dustin Dickens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Top Meteorite","offers":[{"title":"Default Title","offer_id":48752291315937,"sku":"NWA18094EC26_42.22_01","price":630.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1185\/2762\/files\/Top-Meteorite-Diogenite_NWA18094_NWA18094EC26_42.22_01_1.jpg?v=1784858369","url":"https:\/\/topmeteorite.com\/products\/42-22g-diogenite-meteorite-piece-i-hed-meteorite-from-asteroid-4-vesta-i-nwa-18094","provider":"Top Meteorite","version":"1.0","type":"link"}