SKU: 56585710648

NWA 17707 Ordinary Chondrite Meteorite Slice, LL4, 21.45g, Well-Defined Chondrules

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Description

NWA 17707 Ordinary Chondrite Meteorite Slice, LL4, 21.45g, Well-Defined ChondrulesLow iron chondrite with preserved spherules This 21. 45g slice preserves the spherical chondrules that define chondrite meteorites. The LL classification denotes low total iron and low metallic iron content compared to other ordinary chondrite groups. Type 4 metamorphism altered the original minerals without destroying the rounded chondrule boundaries that remain visible throughout the specimen. The fine grained matrix surrounding each chondrule

Low-iron chondrite with preserved spherules

This 21.45g slice preserves the spherical chondrules that define chondrite meteorites. The LL classification denotes low total iron and low metallic iron content compared to other ordinary chondrite groups. Type 4 metamorphism altered the original minerals without destroying the rounded chondrule boundaries that remain visible throughout the specimen. The fine-grained matrix surrounding each chondrule records the conditions under which dust and molten droplets condensed in the solar nebula.

NWA 17707 was classified in 2024, adding a recently documented specimen to the LL group. The slice format displays the internal structure across a broad surface area, showing how individual chondrules vary in size and composition within the same parent body fragment.

Chondrule structure and matrix composition

Chondrules appear as circular to elliptical domains ranging from submillimeter to several millimeters across. Each formed as a molten droplet that solidified rapidly in the protoplanetary disk before accretion into the parent asteroid. The LL4 petrologic grade indicates these spherules experienced heating between 600 and 700 degrees Celsius, enough to recrystallize olivine and pyroxene while maintaining recognizable chondrule boundaries.

The groundmass between chondrules contains fine-grained silicate minerals, metal grains, and troilite. Metal content remains lower than in H or L chondrites, giving LL types their characteristic lower density and reduced magnetic response. Dark shock veins may intersect the slice where impact events fractured the parent body.

Scientific context

Ordinary chondrites constitute approximately 80% of all meteorite falls, but the LL group represents only about 10% of that total. These meteorites sample the outer regions of the main asteroid belt where lower iron abundance reflects distance from the inner solar system during planetary formation. The moderate metamorphism preserved in type 4 specimens provides evidence for thermal processing on asteroids too small to differentiate into core-mantle-crust structures.

Chondrules themselves remain one of the most studied features in meteoritics. Their formation mechanism, whether by shock waves, lightning, or other heating events in the solar nebula, continues to drive research into early solar system dynamics. Learn About Meteorites to understand how these objects preserve records from planetary formation.

Frequently asked questions

Is this meteorite authenticated? NWA 17707 received its classification through analysis submitted to the Meteoritical Society. The Meteoritical Bulletin entry confirms the LL4 ordinary chondrite classification. This specimen includes a certificate of authenticity documenting its classification and provenance. Meteoritical Bulletin entry: NWA 17707

What does the LL4 classification mean? LL indicates low total iron (19-22%) and low metallic iron (1-3%), distinguishing this group from higher-iron H and L chondrites. The number 4 represents petrologic type, indicating moderate thermal metamorphism that recrystallized minerals while preserving chondrule outlines.

What is included with this specimen? The 21.45g slice ships with a certificate of authenticity. No display stand is included.

Why do chondrules matter scientifically? Chondrules froze from molten droplets within the first few million years of solar system history. Their mineral composition and cooling rates provide direct evidence for temperatures, timescales, and processes active in the protoplanetary disk before planets formed.

Collector significance

LL chondrites occupy a smaller segment of collections compared to the more common H and L groups, making classified specimens from this series worthwhile additions. The 2024 classification places this material among recently studied falls and finds entering the scientific record. At 21.45g, the slice offers sufficient size to display the chondrule distribution without requiring premium pricing associated with larger slabs.

The slice format suits both desktop display and study under magnification. Collectors building Chondrites suites can use this specimen to demonstrate the structural differences between ordinary chondrite groups. The visible chondrules provide immediate visual interest compared to more metamorphosed type 5 and 6 specimens where these features blur into homogeneous texture.

Meteoritical Bulletin entry: NWA 17707 | Classification: Ordinary Chondrite (LL4) | Find, Algeria, 2024

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SKU: 56585710648

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mike
Waukegan, US
★★★★★ 5
Super soft
Color: Gray, Size: King
Nice and soft. Love to snuggle under. Warm but not too hot. Size perfect for my bed. Will definitely buy again.
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Reviewed in the United States on January 13, 2026
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patricia aulabaugh
Bozeman, US
★★★★★ 5
Super soft
Color: Cypress, Size: King
Super soft and warm, very nice to sleep with
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Reviewed in the United States on January 27, 2026
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MunchkinsMomsez
Natrona Heights, US
★★★★★ 3
No cat claws allowed!
Color: Cypress, Size: Twin, Color: Cypress, Size: Twin
The quality of this set isn't the best. It you have a cat, a sharp claw or two will do visible damage! I actually clipped the loose threads off days ago, but there's still that double track of claw marks that will always be there. The pillow sham is also huuuge and looks awkward on a twin bed. It you have a large pillow it should be ok. The pillow sham isn't sewn together properly either, the fabric is bunched up where the seams meet. The comforter is pretty lightweight, so I will definitely be needing another blanket (or two!) with this one for winter. However, the set IS very soft, and it IS nice and cozy. The color in person is ok/does not look like photo advertised, as is, it would probably look nicer on a better quality set. The three stars is for comfort only. I will update this review after washing it a couple of times. Update: not even a month, and the fabric has ripped where the claw mark is. But, I have decided to keep it after all, if only for the comfort. Still not happy with the cost vs the quality. Latest update: added last 2 photos to show progression of wear. It does wash up well enough all considered. 3/31/24 Tears in the material (non-sherpa side) continue to appear. If you apply any type of tension to the fabric while making the bed, or just trying to pull the comforter over you when you roll over, you can hear the fabric tearing. I have found 6 tears to date.
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Reviewed in the United States on October 3, 2023
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John cromwell
Boise, US
★★★★★ 5
Finally we BOTH can sleep comfy!
Color: 08 - Black, Size: Queen
So for years my boyfriend has always liked “jersey sheets” or “tee shirt” sheets or sheets made of flannel. He says he doesn’t like the feeling of cold “silky” feeling sheets as he’s always cold. I’m opposite and am always hot, and anytime we stayed in a nice hotel I looked forward to being able to sleep on cooler, taught, soft sheets for a couple of nights. I was able to deal with our old sheets but the issue we both hated was after awhile any sheet we got would get pilling. We even splurged and got a $60 flannel sheet which did the same thing forcing me to shave off these little annoying fuzz balls that make it feels like there is thousands of crumbs on the sheets. I also would wash our bedding once a week because the Jersey sheets seemed to “grow” as we move around in bed making it so the sheet was not taught and super annoying to lay on. The day I would wash them they would be comfortable but ultimately by the end of the week they would be almost hanging off our mattress. I ordered these sheets on a whim and got them the same day and immediately just threw out the jersey sheet and put this on (I didn’t even wash it, I know it’s gross but I was desperate for a comfy nights sleep and they came around 8pm) when I put them on I realized how soft and comfortable they felt. I also liked how the pillow cases are larger than most pillow cases that I have had in the past. We’ve been using these sheets for about a week and I love how I don’t wake up with my pillow popping out of the case anymore. The sheets have loosed ever so slightly since a week of sleeping but still are really taught and comfortable. They are cooler than flannel or fabric sheets and are initially cold when you first lay on them but I wouldn’t consider them “cooling” but they keep me from feeing extremely hot. They are way better than I ever would have expected for the price. I look forward to laying on them at the end of each day, even my boyfriend laid in bed the day I got them and said “wow I didn’t think I would like sheets like this, these are so soft!” And fell asleep immediately. We ended up ordering a second set in grey and the color is pretty. I still have yet to wash them, I usually use 2 tide pods when washing the bedding but I might get some fabric softener (as I hear it helps with pilling) to prevent the possibility of having that happen to these sheets in the future. I am hoping they hold up well after the wash and longer use. If they start to pill after wash, I will come back and update my review. Until then, I would highly recommend these sheets for the quality and the price point that they are offered at. Honestly, at this point even if they pill months from now I probably wouldn’t even be upset as long as they stay the same price I would just buy another set as they are just that comfortable and soft. UPDATE: So it has been about 3 months since I have purchase and used these sheets. They are still as soft as the day I first put them on. I’ve been washing them bi-weekly along with my comforter and pillowcases. I wash them with warm water using a combination of tide pods and added Downy fabric softener. They say to hang dry them in the description but I have been putting them in the dryer on medium and have been taking them out after around 20-25 minutes, they seem to dry extremely quickly. They have yet to have absolutely any pilling and also have not shrunk or stretched. Also I have a cat that is very active and also sleeps with me who enjoys kneading on my bed and I haven’t even noticed any signs of wear what so ever to the eye or to the feel. I highly recommend these sheets. I still have yet to even open the second set I purchased!
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Reviewed in the United States on January 10, 2024
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Joy Joy
Alexandria, US
★★★★★ 5
Happy With Our Purchase
Color: 07 - Charcoal, Size: King, Color: 07 - Charcoal, Size: King
When we opened the package the sheets were soft. We wash everything before we use it, so in these went. The sheets held nicely through the washing machine, the edges stayed sewn up and the sheets are still fluffy. The sheets fit nicely on our bed and have a nice cooling effect in this 80-degree weather. We think these sheets were a quality purchase that was affordable.
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Reviewed in the United States on June 6, 2026

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