SKU: 57861598842

NWA 18448 Brecciated Eucrite HED Achondrite, 34.20g Full Slice

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Description

NWA 18448 Brecciated Eucrite HED Achondrite, 34.20g Full SliceNWA 18448, a freshly classified brecciated eucrite from Algeria This 34. 20g full slice is cut from the 900g main mass of NWA 18448, a brecciated eucrite (HED achondrite) recovered from the Saharan region of Algeria and purchased in 2024. The specimen was scientifically classified by Jose Garcia at ADARA Petrography & Curation of Astromaterials in the Canary Islands and approved by the Meteoritical Society Nomenclature Committee on 10 March 2026, with

NWA 18448, a freshly classified brecciated eucrite from Algeria

This 34.20g full slice is cut from the 900g main mass of NWA 18448, a brecciated eucrite (HED achondrite) recovered from the Saharan region of Algeria and purchased in 2024. The specimen was scientifically classified by Jose Garcia at ADARA Petrography & Curation of Astromaterials in the Canary Islands and approved by the Meteoritical Society Nomenclature Committee on 10 March 2026, with publication scheduled for Meteoritical Bulletin 115. Brian McDonald (IMCA #3323) holds the main mass and authored the working designation BMD 036 during the classification process.

Structure and features

The polished face of this 34.20g full slice exposes a well-developed brecciated fabric and, notably, several distinct FeNi metal flecks across the cut surface. The largest is a circular metal-rimmed inclusion that catches direct light and creates a focal point on the slice, with smaller reflective grains scattered through the matrix. Visible metal of this prominence in hand specimen is uncommon for eucrites, where the metal phase is typically minor and finely disseminated; here the accessory metal identified in ADARA's analysis is conspicuous enough to study under direct lighting. The fine-grained clastic matrix carries a diverse clast population that includes dark gray to nearly black pyroxene-rich clasts, cream to yellow-tan feldspathic clasts, and composite mottled fragments. Clast sizes range from sub-millimeter grains up to several millimeters across the cut surface. Hairline fractures with light-colored mineral infill cross portions of the slice, reflecting the low weathering grade noted in the official classification. A portion of the original exterior is preserved along one edge, retaining a reddish-brown weathering surface. The ADARA petrography confirmed the constituent minerals as Ca-rich pyroxene, low-Ca pyroxene, plagioclase, and a silica polymorph, with accessory chromite, troilite, and FeNi metal. Mineral chemistry: low-Ca pyroxene Fs60.8±0.6Wo1.7±0.2 (FeO/MnO 28 to 30), Ca-pyroxene Fs25.7±0.3Wo44.4±0.3 (FeO/MnO 27 to 31), and plagioclase An83.4±1.3. The specimen carries a moderate shock stage and a magnetic susceptibility of 3.78 (log χ).

Discovery and provenance

The 900g single stone was recovered from Algeria and entered the meteorite trade in 2024 through a dealer in Africa. Brian McDonald acquired the main mass and submitted the material to Jose Garcia at ADARA Petrography & Curation of Astromaterials (Calle Dr. Joaquín Artiles, 36, AP 3. Agüimes, 35260, Las Palmas, Canary Islands, Spain) for petrographic and geochemical analysis. The 20.88g type specimen is deposited at the Museo de la Naturaleza y Arqueología (MUNA) in Santa Cruz de Tenerife, Spain. The Meteoritical Society approved the official name Northwest Africa 18448 on 10 March 2026, with the full writeup scheduled for Meteoritical Bulletin 115.

Scientific context

Eucrites are basaltic igneous rocks that crystallized in the upper crust of a differentiated asteroid parent body. Spectroscopic and isotopic evidence links the HED achondrite clan (howardites, eucrites, and diogenites) to asteroid 4 Vesta, the second-largest body in the main asteroid belt. Brecciated eucrites such as NWA 18448 preserve a record of impact processing on that parent body: an original basaltic lithology was fragmented by surface impacts, then lithified into a coherent rock by subsequent shock and burial. The mineral chemistry reported by ADARA falls within established compositional ranges for eucritic basalts, and the clastic matrix with mineral and lithic clasts is consistent with surface-derived regolith or fragmental breccia formation on the parent body. As of the Meteoritical Society's most recent count, NWA 18448 is 1 of 273 approved brecciated eucrites. For background on meteorite classification and parent bodies, see our Learn About Meteorites hub.

Frequently asked questions

What is a brecciated eucrite? A brecciated eucrite is a basaltic meteorite from a differentiated asteroid whose original igneous fabric was fragmented by impacts on the parent body and then re-cemented into a coherent rock. NWA 18448 displays this clast-in-matrix texture throughout the slice.

Where did NWA 18448 come from? The 900g single stone was found in Algeria and purchased in 2024 from a meteorite dealer in Africa. The HED parent body is widely accepted to be asteroid 4 Vesta in the main belt.

Who performed the classification? The petrographic and geochemical analysis was performed by Jose Garcia at ADARA Petrography & Curation of Astromaterials in the Canary Islands, Spain. The 20.88g type specimen is deposited at the Museo de la Naturaleza y Arqueología (MUNA) in Santa Cruz de Tenerife.

Is this specimen officially recognized? Yes. NWA 18448 was approved by the Meteoritical Society Nomenclature Committee on 10 March 2026 and is published in Meteoritical Bulletin 115. The full entry is searchable in the Meteoritical Bulletin Database.

What does "full slice" mean? A full slice is a complete cross-sectional cut taken from one face of the parent stone through to the other, exposing the entire interior fabric in a single continuous plane. It differs from an end cut or a partial slice, both of which preserve less of the cross section.

Collector significance

HED achondrites occupy a central position in serious meteorite collections because they sample the crust of an identified asteroid parent body. A full slice of a recently classified brecciated eucrite gives the collector both a study-grade specimen and a documented entry in the published Meteoritical Bulletin record. The visible accessory metal phase on the polished face gives this specimen unusual visual character for an eucrite and lends itself well to display under direct lighting. The 34.20g weight places NWA 18448 in a display-friendly range suited to both private collections and educational reference. Every specimen ships with IMCA #3323 dealer documentation. The full classification entry for NWA 18448, including geochemistry, petrography, and type specimen deposition, is available at the Meteoritical Bulletin Database (code 86559). Browse related material in our Eucrites and HED Meteorites collections.

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SKU: 57861598842

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4.4 ★★★★★
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A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
I wish I had read this sooner.
Format: Kindle
This book helped not only my discipline strategies but my faith. I didn’t even realize that I was not raised in a grace-based discipline approach. I’m so thankful that this book helped to convict me on a few things so I can show my daughter God’s love for her more clearly. I loved her humor. Made it actually really enjoyable to read! Her details are what really helped me. I am the kind of person who learns best from specific examples; this book has some good ones. I loved that there weren’t any muddy concepts and it didn’t get too theoretical type so I could actually understand.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 18, 2019
L
Verified Purchase
LAM
Pawtucket, US
★★★★★ 5
Excellent resource for Christian parents raising the next generation!
Format: Paperback
I am currently researching and reading materials for a book I’m writing regarding how to build a strong foundation in children before the age of 10. I’ve read quite a few books so far, and I have to say one of my favorites is Grace Based Discipline. The author has done an excellent job, and and her witty humor makes this an enjoyable read! Because of this book, I am ordering the other books that her and her father have written!
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Reviewed in the United States on March 29, 2020
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Verified Purchase
Ashley
Charlottesville, US
★★★★★ 5
Finally, a practical parenting book!
Format: Kindle
Prior to reading this book, I didn’t feel confident in my approach to discipline. I would read parenting advice from different sources and sway back and forth from one extreme to the other—overly strict to too lenient. The approach of grace based disciple is balanced. The author recognizes that children will act like children and we shouldn’t expect them all to act like little robots. However, they still need discipline (not punishment!) for their misbehavior. She gave very practical lists of what consequences work best at each age and for each personality type, and went beyond that to say how to truly address the deeper issues associated with the misbehavior. If you are wondering about her view on spanking (because most authors take a very strong stance on this) I think this book is very beneficial no matter which camp you are in. In the appendix, the author addresses spanking in a nonjudgmental way. She gives cautions if you decide to use spanking, and gives cautions if you decide not to use it. My only criticism of this book is that one chapter talks about how we need to recognize the “home country” (personality) of each member of our household and she suggests using an assessment to determine what “country” your child is from. However, you must pay separately for the assessment and it isn’t cheap. This idea of what “country” you and your children are from is referenced again and again in the book so I feel like it should have been included in the appendix. However, this book is still worth it. Don’t let that keep you from buying it.
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Reviewed in the United States on June 29, 2018
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E Tolentino
West Palm Beach, US
★★★★★ 3
Mixed feelings
Format: Paperback
I had the opportunity to finish this book in one day of reading, while my 3 kids spent the day with grandparents. It is a very easy read, very accessible. Karis' style is very informal and she employs a lot of humor (and hyperbole), and that may be refreshing for some, though I found it distracting. I hope my criticisms will not be taken too harshly, and am certainly glad that others have found it inspiring or enlightening! We desperately need more grace based parenting in our homes and churches as we strive to undo the influence and damage of the punitive methods that have marred the face of Christian culture for so long! We need more books like this, that can reach every believing parent where they are, and inspire them to parent with the same grace and wisdom our Heavenly Father employs! All that said, this was my experience reading the book: I felt the numerous anecdotes take up valuable space and time that would be better spent digging into passages of the Word and working through practical application. I was disappointed to not find a whole lot of either. If you are well-read on child development and "alternative" methods of discipline and childrearing (from those considered to be in the "anti-spanking camp"), you will find nothing new here. I didn't care for the rebranding of the classic four temperments and promoting supplemental Family Matters products... You can easily find many free tools and information reguarding personality psychology on the internet, and you will have a much deeper understanding. But personality is a shifty thing in youth anyway, and if you are not inclined to pursue that kind of study, I promise that simply resolving to spend more unstructured time with your children, to slow down and observe them at work or play, to listen with full attention, considering their perspective before answering or judging, you will learn more than what could ever be summerized in a personality type. Pegging a child in any brand of personality typing has it's own drawbacks. It can promote unfair assumptions, lead to misunderstandings, and cause confusion when trying to understand more subtle or complex behaviors and attitudes. I appreciate her reasoning for not digging into the spanking issue in the main content of the book, setting that aside in the appendix in the back. She does a good job highlighting what gracious spanking looks like if you choose to do so. I am of a similar opinion that it is not a crucial point of doctrine and isn't always an issue of abuse or neglect either. It truly is a parent's prerogative and responisibility to consider the Word and the research and their own consience on the matter. If you do spank, follow her guidelines and you will not go wrong! I did find her characterizations of non-spankers, like myself, a bit condescending ("lazy", "fearful"), but to be fair she is addressing the extreme. If only you knew how much effort and time in research and reflection many of us sacrifice to employ better methods! It is very proactive approach and it is difficult work! I think she could have done a better job to include an objective summery of arguments in both camps for better understanding, but I really appreciate her exhorting those in both camps to avoid contention and judgement. It should never be an issue that causes us to break fellowship with a brother or sister! There is a good chapter on what she calls the "3 P's", a helpful framework for discerning the whole truth of God's word. But as far as parenting goes, personally, I didn't find anything new or particularly helpful here. I will be gifting this to a good friend/newer mom who will likely get more out of it than I did. Maybe you will too!
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Reviewed in the United States on July 24, 2018
J
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J. M. Magrini
Omaha, US
★★★★★ 5
Excellent, succinct, intro to Marxism...
Format: Paperback
Richard Wolff’s Understanding Marxism is an excellent and highly accessible populist work that introduces Marx’s critique of the inherent contradictions and inevitable problems that plague – and will continue to plague – capitalism. So, he sets out to show how the contemporary experience and understanding of the relationship between employer-employee emerge from because it is the modern manifestation of the historical distinction, which is hierarchical, oppressive and ultimately “exploitative, between master-slave and Lord-serf - Zizek, in his small text The Relevance of the Communist Manifesto, offers a unique response to this line of critique and reasoning. Above I mention the accessibility of the writing – in fact, there is a crystalline clarity to it - and if you have watched Wolff’s show or listened to his interviews, it’s as if Wolff is speaking in his usual manner that avoids academic jargon and communicates his ideas directly. This is an extremely helpful and useful guide to understanding Marx, and I am hoping many young intelligent politically-minded university students will read it – e.g., those who might be unfamiliar with Marx - because it offers a sensible corrective to the ill-informed Marxist critics on the so-called “intellectual dark web” (IDW) who repeatedly, without properly understanding Marx, scapegoat him and employ him as a bogeyman to enhance the arousal of fear and alarm with their rhetoric. Ultimately, and here I agree with Wolff, Marx might be said – bound intimately with Marx’s notion of “species being” (a term Wolff avoids) – to show why “ending exploitation [is] necessary to actualize social commitments to liberty, equality, brotherhood, and democracy” (36-37). So, instead of a utopian (end-of-history) communist or socialist model for society, Wolff, through his reading of Marx, offers what might be termed a philosophical or even commonsensical (and achievable!) model of what a more socially aware and humanly grounded workplace might look like – one that is Marxist in nature and instantiates people coming together in more “democratic, egalitarian ways.” (71). Wolff also directs readers to primary source material for further study - so, all the quotations included are traced to Marx's original writings, which readers are encouraged to seek out. To conclude, readers must be aware that this pamphlet – indeed, this is what Wolff calls it – does not attempt to serve as a broad or sprawling introduction to Marx and his writings. Thus, when ordering it, be aware that it is not akin to academic introductions and critiques of Marx such as Peter Singer’s Marx: a Very Short Introduction (OUP) or Allen Wood’s Karl Marx (Routledge).
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Reviewed in the United States on May 20, 2019

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