Northwest Africa 15915 (NWA 15915) Meteorite – 596.6g Complete Individual – Rare Ungrouped Achondrite – UV Fluorescent
THE BEST OF THE BEST — A REMARKABLE 596.6 GRAM COMPLETE INDIVIDUAL
Weight: 596.6 grams
Meteorite Type: Ungrouped Achondrite
Lithology: Mg-Rich Diopsidite
Find Location: Algeria
Year Found: 2023
Specimen: 100% Complete Individual
UV Response: Highly Fluorescent / UV Reactive
Streaming Meteorites is exceptionally proud to offer what I consider to be one of the finest complete individual specimens of Northwest Africa 15915 (NWA 15915) ever made available to collectors.
At 596.6 grams, this is an enormous and extraordinarily impressive complete individual of one of the most unusual and scientifically fascinating achondrites known.
This is not a fragment.
This is not an end cut.
This is a 100% complete individual meteorite, preserving its natural exterior exactly as it arrived from the desert.
And the exterior is spectacular.
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A METEORITE THAT LOOKS LIKE IT CAME FROM ANOTHER WORLD
The first thing that immediately captures your attention is the extraordinary exterior morphology.
This individual displays an extensive, beautifully preserved dark fusion crust, sculpted and textured by its passage through Earth's atmosphere.
Across the surface are prominent flow lines, atmospheric sculpting, natural depressions, regmaglypt-like features, ridges, valleys, and complex areas of crustal texture.
The exterior has an almost molten appearance in places, with dramatic variations between black, charcoal-gray, metallic-looking surfaces and warm brown-golden weathering tones.
The result is a specimen that looks less like an ordinary terrestrial rock and more like a piece of an ancient planetary body that has been frozen in the moment of its arrival on Earth.
The irregular contours and pronounced surface relief make this an exceptionally attractive natural display specimen.
There is no need to cut this meteorite to appreciate it.
The complete exterior is the specimen.
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NWA 15915 — ONE OF THE MOST UNUSUAL ACHONDRITES KNOWN
Northwest Africa 15915 is officially classified as an Ungrouped Achondrite, Mg-Rich Diopsidite.
Its mineralogy is extraordinarily unusual.
The meteorite is dominated by coarse, magnesium-rich diopside, producing a distinctive crystalline rock unlike the overwhelming majority of known meteorites.
Associated minerals include:
• Enstatite
• Daubréelite
• Alabandite
• Troilite
• Minor low-nickel kamacite
One of the most remarkable characteristics of NWA 15915 is what it does not contain.
The meteorite contains virtually no olivine or plagioclase, setting it apart from the familiar mineral assemblages seen in most achondrites.
This highly unusual mineralogy is one of the reasons NWA 15915 remains ungrouped.
It does not comfortably fit into any established meteorite group.
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A POSSIBLE PIECE OF A LOST PLANETARY WORLD
NWA 15915 is particularly fascinating because its mineralogy points toward an extremely reduced planetary environment and a history involving melting and differentiation.
This was not primitive Solar System material that simply remained unchanged.
Its coarse crystalline texture indicates that its minerals formed within a melted and differentiated planetary or asteroidal body, allowing crystals to grow and develop before the material was ultimately broken apart.
The meteorite's unusual chemistry has led scientists to consider formation environments comparable to those expected within highly reduced planetary interiors.
For collectors, this raises one of the most fascinating possibilities surrounding NWA 15915:
This meteorite may represent a surviving fragment of an ancient differentiated proto-planetary body that was destroyed or otherwise lost during the violent early history of our Solar System.
Whatever its exact parent body ultimately proves to be, NWA 15915 preserves material from a geological environment that is extraordinarily rare in our meteorite collection.
It is quite literally a fragment of planetary history.
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THE 596.6 GRAM COMPLETE INDIVIDUAL
This specimen is where NWA 15915 becomes truly exceptional.
At 596.6 grams, this is a substantial individual, and its size allows the collector to appreciate the meteorite's complete three-dimensional morphology in a way that simply cannot be experienced with a small fragment or thin slice.
The specimen displays:
Extensive preserved fusion crust
Pronounced atmospheric flow-line textures
Multiple natural depressions and regmaglypt-like features
Strongly sculpted aerodynamic exterior
Complex black, charcoal, gray, brown and golden surface coloration
Natural ridges and valleys
Highly irregular three-dimensional morphology
Exceptional visual character from every angle
The photographs show how dramatically the appearance changes as the specimen is rotated.
One side presents an almost completely dark, heavily textured crust.
Another reveals extensive golden-brown and charcoal coloration.
Other surfaces display pronounced flow structures and deeply sculpted depressions.
This is precisely what makes a complete individual so desirable.
You are not simply owning a piece of the meteorite.
You are preserving the meteorite's original form.
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HIGHLY UV FLUORESCENT
And then there is another remarkable characteristic.
THIS SPECIMEN IS HIGHLY UV-REACTIVE.
Under ultraviolet illumination, the meteorite undergoes a dramatic transformation.
Areas of the specimen exhibit an intense orange-red to reddish fluorescent response, revealing mineralogical variations that are largely invisible under normal illumination.
The fluorescence is particularly impressive across the complex crystalline material exposed along portions of the specimen.
Under ordinary lighting, you see an ancient, dark, heavily sculpted achondrite.
Under UV illumination, an entirely different mineralogical landscape emerges.
This makes the specimen exceptionally attractive to collectors who appreciate fluorescent minerals and meteorites, as well as those looking for unusual display characteristics.
The UV response is an observed characteristic of this individual and is not being presented as a diagnostic requirement of the official classification.
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ALMOST COMPLETELY GONE FROM THE MARKET
One of the most important factors surrounding NWA 15915 today is its extreme scarcity.
The total known mass of this meteorite is only approximately 2.84 kilograms.
That is an extraordinarily small amount of material for an officially classified meteorite.
A 596.6 gram complete individual therefore represents a very significant percentage of the entire known mass of NWA 15915.
And because this is a complete individual rather than a cut fragment, its scientific and collector significance is considerably different from simply owning an equivalent weight of small pieces.
Material from this meteorite has become extremely difficult to obtain, and substantial complete individuals are particularly scarce.
This is the kind of specimen that rarely comes back onto the market once it enters a serious collection.
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WHY THIS SPECIMEN IS EXTRAORDINARY
There are many reasons this particular individual stands apart:
• 596.6 grams
• 100% complete individual
• Officially classified ungrouped achondrite
• Mg-rich diopsidite
• Extremely rare meteorite type
• Only approximately 2.84 kg total known mass
• Extensive preserved fusion crust
• Pronounced atmospheric flow lines
• Natural regmaglypt-like depressions
• Dramatically sculpted aerodynamic exterior
• Complex three-dimensional morphology
• Exceptional natural coloration and texture
• Highly UV fluorescent/reactive
• One of the finest examples from this meteorite in my personal collection
• Material is now extremely scarce
This is genuinely a best-of-the-best specimen.
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SPECIMEN DETAILS
Meteorite: Northwest Africa 15915 (NWA 15915)
Classification: Ungrouped Achondrite
Lithology: Mg-Rich Diopsidite
Country: Algeria
Year Found: 2023
Total Known Mass: Approximately 2.84 kilograms
Individual Weight: 596.6 grams
Completeness: 100% Complete Individual
Fusion Crust: Extensive
Surface Features: Flow Lines, Atmospheric Sculpting, Natural Depressions / Regmaglypt-like Features
UV Response: Highly UV Fluorescent / Reactive
Condition: Natural complete individual
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INCLUDED WITH YOUR PURCHASE
596.6 Gram NWA 15915 Complete Individual
Protective Collector Display Case
Streaming Meteorites Certificate of Authenticity
Lifetime Authenticity Guarantee
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AUTHENTICATION & SELLER INFORMATION
THE STREAMING METEORITES STANDARD
When purchasing from Streaming Meteorites, you are acquiring far more than a meteorite.
You are acquiring an authenticated piece of planetary history selected for authenticity, scientific significance, rarity, aesthetic beauty, collector appeal, and long-term importance.
Every specimen is personally inspected and selected with collectors in mind.
We acquire specimens that we would be proud to own ourselves.
Streaming Meteorites has sold over 8,200 meteorites with 100% positive customer feedback and stands behind every specimen with our Lifetime Authenticity Guarantee.
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A RELIC FROM A FORGOTTEN WORLD
Billions of years ago, while Earth was still forming, countless planetary bodies were colliding, melting, differentiating, and evolving throughout the young Solar System.
Some became planets.
Some became asteroids.
Others were shattered and disappeared completely.
NWA 15915 may preserve a piece of one of those ancient worlds.
Its unusual chemistry, extraordinary mineralogy, and highly reduced nature provide a glimpse into a planetary environment unlike anything represented by most meteorites found on Earth.
And this particular specimen preserves something especially valuable:
the meteorite itself — intact.
The original exterior.
The fusion crust.
The atmospheric flow lines.
The sculpted surface.
The natural depressions.
The three-dimensional form.
And the remarkable UV response.
At 596.6 grams, this is not merely a rare specimen of NWA 15915.
It is a major surviving piece of one of the most enigmatic meteorites in our collections.
For the advanced meteorite collector, researcher, institution, or museum looking for something genuinely exceptional, this is the kind of specimen that deserves to be preserved.
A rare survivor from an ancient planetary world that may no longer exist.
596.6 grams.
100% complete.
One extraordinary individual.
Streaming Meteorites
Forged among the stars. Sculpted by Fire. Shaped by Time.