Meteorite Identifier
Upload meteorite photos
Clear, well-lit images help the AI identify it more accurately.
Analyzing extraterrestrial characteristics...
Checking texture, color, structure, and lookalikes…
Upload a photo of your suspected meteorite for instant AI analysis. Our tool helps distinguish genuine space rocks from common lookalikes like slag, magnetite, and basalt.
Get AI Rock ID for iPhoneFinding a genuine meteorite is exceptionally rare, less than 1 in 1,000 suspected meteorites sent to laboratories actually come from space. The vast majority are terrestrial rocks or industrial materials that share superficial similarities with space rocks. Understanding what makes a real meteorite distinctive can save you time and help set realistic expectations.
Our AI meteorite identifier analyzes your photos for key diagnostic features including fusion crust texture, regmaglypts (thumbprint-like depressions), metallic content indicators, and surface weathering patterns. While no photo-based tool can replace laboratory analysis for definitive identification, RockIdentifier.io helps you quickly assess whether your find warrants further professional testing.
Good fit for
- Dense, unusually heavy rocks that attract a magnet
- Stones with dark, glassy crusts or thumbprint-like surface depressions
- Metallic specimens found in unexpected locations
- Desert or dry lakebed finds with unusual characteristics
- Rocks that look different from surrounding geology
Not for
- Definitive authentication for sale or insurance purposes
- Determining precise meteorite classification or value
- Analyzing microscopic or internal mineral structures
- Replacing professional laboratory testing and certification
At a glance
Meteorites are natural solid objects that survive passage through Earth's atmosphere and land on the surface, originating from asteroids, the Moon, or Mars. They are classified into three main groups, iron, stony-iron, and stony, based on their composition of metal and silicate minerals.
| Composition Types | Iron, Stony-iron, Stony (chondrites & achondrites) |
|---|---|
| Key Feature | Fusion crust from atmospheric entry |
| Magnetic Property | Most attract magnets (iron-nickel content) |
| Density | Heavier than most Earth rocks of similar size |
| Surface Texture | Regmaglypts (thumbprint depressions) common |
| Rarity | Less than 0.1% of suspected finds are genuine |
What Makes a Real Meteorite: Diagnostic Features
Genuine meteorites display several distinctive characteristics that develop during their violent journey through Earth's atmosphere. The most recognizable is fusion crust, a thin, dark, glassy coating formed when the outer surface melts at temperatures exceeding 1,800°C during atmospheric entry. Fresh fusion crust appears black and may have a subtle sheen, while weathered specimens show brown oxidation. This crust is typically less than 1mm thick and may show flow lines indicating the direction of travel.
Regmaglypts are another telltale sign, shallow, rounded depressions resembling thumbprints pressed into clay. These form as softer material ablates away during flight, creating the characteristic scalloped surface texture. Unlike the sharp, angular cavities found in volcanic rocks, regmaglypts have smooth, flowing contours. Iron meteorites display these most prominently, while some stony meteorites may show subtler versions.
Most meteorites contain iron-nickel metal, making them respond to magnets. This test alone isn't definitive since many terrestrial rocks also contain magnetic minerals, but a complete lack of magnetic attraction usually rules out common meteorite types. The density of meteorites also exceeds most Earth rocks, they feel noticeably heavier than expected for their size, a quality geologists call "heft."
Meteorite vs Slag: The Most Common Misidentification
Industrial slag represents the single most common meteorite impostor, accounting for a significant percentage of misidentified specimens. Slag is a byproduct of metal smelting operations and has been produced for thousands of years, meaning it can be found almost anywhere humans have processed ore. Its glassy, often dark appearance and sometimes magnetic properties create convincing superficial similarities to meteorites.
Key differences help distinguish slag from genuine space rocks. Slag typically contains visible bubbles, vesicles, or flow structures from its molten industrial origin, features absent in meteorites. The surface texture of slag often appears ropy or shows obvious flow patterns, while meteorite fusion crust is more uniform. Slag frequently displays bright colors including blues, greens, and purples from various metal oxides, whereas meteorite fusion crust is consistently dark brown to black.
When you upload a suspected meteorite photo to RockIdentifier.io, our AI examines surface texture, color patterns, and structural features that help differentiate industrial slag from extraterrestrial material. Look for the absence of regmaglypts, presence of gas bubbles, and unnatural coloration as slag indicators in your own visual assessment.
Magnetite and Other Magnetic Lookalikes
Magnetite, a common iron oxide mineral, fools many hopeful meteorite hunters because it strongly attracts magnets and often appears as dense, dark, heavy stones. Found worldwide in igneous and metamorphic rocks, magnetite specimens can superficially resemble iron meteorites. However, magnetite lacks fusion crust, regmaglypts, and the nickel content that defines meteoritic iron.
The surface of magnetite typically shows a metallic to submetallic luster with a characteristic iron-black color. It may display octahedral crystal faces or appear massive without distinct crystal form. Unlike meteorites, magnetite leaves a black streak when scraped across unglazed porcelain, a simple test you can perform at home. Meteorites leave a gray or brownish streak, never pure black.
Hematite, another iron oxide, also causes confusion due to its weight and sometimes dark appearance. Massive hematite can feel meteorite-like in the hand but typically shows a reddish-brown streak and lacks magnetic attraction unless mixed with magnetite. The AI Rock ID iPhone app can help you distinguish these common magnetic minerals from genuine meteorites by analyzing surface characteristics visible in your photos.
Basalt and Volcanic Rock Confusion
Dark, dense basalt frequently gets mistaken for stony meteorites, particularly when weathered specimens develop a dark exterior coating. Basalt is Earth's most common volcanic rock, forming from rapidly cooled lava, and its fine-grained dark appearance can superficially resemble meteorite fusion crust. However, several features distinguish terrestrial basalt from space rocks.
Vesicular basalt contains numerous small holes from gas bubbles trapped during cooling, a feature never present in meteorites. Even non-vesicular basalt typically shows a uniform, fine-grained texture throughout when broken, while stony meteorites reveal small metal flecks and round structures called chondrules in their interiors. Fresh basalt breaks show the same color inside and out, whereas meteorites display contrast between their fusion crust and lighter interior.
Desert varnish, a dark manganese-iron coating that develops on rocks in arid environments, can make ordinary basalt and other rocks appear to have fusion crust. This natural weathering process takes thousands of years and produces a coating that differs from true fusion crust in texture and thickness. Our meteorite identifier helps evaluate whether dark surface coatings show characteristics consistent with atmospheric entry or terrestrial weathering processes.
Photography Tips for Accurate Meteorite Analysis
Quality photographs dramatically improve AI identification accuracy for suspected meteorites. Capture your specimen in natural daylight, avoiding harsh shadows that obscure surface texture. The subtle features that distinguish meteorites, fusion crust texture, regmaglypts, metal flecks, require clear, well-lit images to assess properly.
Take multiple angles showing all surfaces of your specimen. Include close-up shots of any unusual textures, depressions, or surface features. If your rock shows a fresh break or cut surface, photograph this interior view as well, the presence of metal flecks or chondrules visible inside strongly supports meteorite identification. A photo showing the specimen next to a coin or ruler provides scale reference.
For magnetic testing documentation, photograph your specimen attracting a magnet if applicable. Show the strength of attraction by demonstrating whether the magnet sticks firmly or barely responds. When using RockIdentifier.io's web tool, upload your clearest, most detailed image first, then add supplementary angles if the initial analysis requests more information.
Understanding AI Identification Limitations
Photo-based meteorite identification, whether by AI or human experts, cannot provide definitive authentication. Certain diagnostic tests require physical examination: measuring specific gravity, testing nickel content with acid, examining polished and etched surfaces for Widmanstätten patterns in iron meteorites, or identifying chondrules under magnification in stony meteorites. Laboratory analysis remains the gold standard for meteorite verification.
Our AI meteorite identifier excels at screening, quickly assessing whether a specimen shows characteristics consistent with meteorites or displays clear indicators of common lookalikes. This preliminary evaluation helps you decide whether to pursue professional testing, potentially saving significant time and expense on obviously terrestrial specimens.
The tool works best for specimens with visible surface features and struggles with heavily weathered, broken, or partial specimens where diagnostic characteristics have been obscured. Extremely small specimens or those photographed in poor lighting may not provide sufficient detail for confident assessment. When results are uncertain, we recommend consulting with a university geology department or established meteorite dealer for hands-on evaluation.
What To Do If Your Rock Might Be a Meteorite
If AI analysis suggests your specimen shows meteorite-consistent features, several next steps can help confirm or rule out extraterrestrial origin. First, perform the streak test: scrape your specimen firmly across unglazed white porcelain (the bottom of a ceramic tile works well). Meteorites produce gray to brownish streaks, while magnetite leaves black and hematite leaves reddish-brown.
Document your find location precisely, including GPS coordinates if possible. Provenance significantly affects both scientific value and market value of confirmed meteorites. Note the surrounding geology, finding a dense, magnetic stone in an area of limestone or sandstone is more significant than finding one in basite terrain. Photograph the find location and any associated rocks.
For professional verification, contact university geology or planetary science departments, natural history museums, or established meteorite dealers. Many offer identification services, sometimes free for potentially significant specimens. The Meteoritical Society maintains a database of classified meteorites and can direct you to qualified analysts. Avoid cutting, polishing, or cleaning your specimen before professional examination, as original surface features provide crucial diagnostic information.
Regional Considerations for Meteorite Hunting
Meteorites fall randomly across Earth's surface, but certain environments preserve and reveal them better than others. Desert regions, including the Sahara, Arabian Peninsula, Atacama, and American Southwest, yield disproportionate numbers of finds because dark fusion-crusted stones contrast against light sand and minimal vegetation. Dry conditions also slow weathering that would otherwise destroy specimens.
Antarctica represents the world's richest meteorite hunting ground, where ice flow concentrates specimens against mountain barriers and the white background makes dark stones visible from distance. However, Antarctic meteorites are collected only by scientific expeditions. For amateur hunters, dry lakebeds, agricultural fields after plowing, and areas with minimal native rock offer the best chances of spotting anomalous specimens.
Understanding your local geology helps calibrate expectations. If you live in an area dominated by dark volcanic rocks, distinguishing meteorites becomes more challenging. Conversely, finding a dense, magnetic, fusion-crusted stone in terrain composed entirely of sedimentary limestone would be highly significant. The AI Rock ID app can help you learn to recognize your region's common rocks, making genuine anomalies easier to spot.
How to Use This Meteorite Identifier
Photograph Your Specimen
Capture clear photos in natural daylight showing all surfaces. Include close-ups of any unusual textures, depressions, or metallic areas. Add a coin for scale reference.
Upload for AI Analysis
Use RockIdentifier.io's web tool or the AI Rock ID iPhone app to submit your best photo. The AI examines surface features, texture, and visual characteristics.
Review Identification Results
Receive instant analysis comparing your specimen against meteorite characteristics and common lookalikes including slag, magnetite, and basalt.
Perform Home Tests
Conduct the magnet test and streak test to gather additional data. Document results alongside your photos for comprehensive assessment.
Seek Professional Verification
If results suggest possible meteorite origin, contact university geology departments or certified meteorite dealers for laboratory confirmation.
More Identification Tools
Rock Identifier
General-purpose rock and mineral identification from photos
Mineral Identifier
Identify magnetite, hematite, and other magnetic minerals
Obsidian Identifier
Distinguish volcanic glass from meteorite fusion crust
Glass Identifier
Identify natural and artificial glass including slag
Stone Identifier
Analyze basalt and other dense dark stones
Gold Identifier
Identify metallic specimens and native metals
Frequently Asked Questions
How can I tell if my rock is a meteorite or slag?
Examine the surface for gas bubbles or vesicles, these indicate slag, never meteorites. Slag often shows flow textures and may display unusual colors (blue, green, purple) from metal oxides. Meteorites have uniform dark fusion crust and may show thumbprint-like regmaglypts. Our AI analyzer evaluates these distinguishing features in your uploaded photos.
Do all meteorites stick to magnets?
Most meteorites contain iron-nickel metal and attract magnets, but attraction strength varies significantly. Iron meteorites respond strongly, while some stony meteorites show weak or no magnetic response. However, magnetic attraction alone doesn't confirm meteorite identity since terrestrial magnetite and some industrial materials are also magnetic. Use magnetism as one factor among several diagnostic tests.
What does meteorite fusion crust look like?
Fresh fusion crust appears as a thin (under 1mm), dark black, slightly glassy coating covering the meteorite's exterior. It may show subtle flow lines or a matte to slightly shiny texture. Weathered fusion crust oxidizes to brown tones. The crust forms during atmospheric entry when surface material melts at extreme temperatures, creating a distinctive coating absent on terrestrial rocks.
Why is my suspected meteorite not a meteorite?
Statistically, less than 0.1% of rocks submitted for testing prove to be meteorites. Common lookalikes include industrial slag (most frequent), magnetite, hematite, basalt with desert varnish, and iron ore nodules. These terrestrial materials can appear dark, dense, and magnetic, superficially resembling meteorites while lacking diagnostic features like fusion crust, regmaglypts, and nickel-iron metal content.
Can AI accurately identify meteorites from photos?
AI photo analysis provides valuable preliminary screening by evaluating visible surface characteristics against known meteorite features and common lookalikes. However, definitive meteorite identification requires laboratory testing including nickel content analysis, specific gravity measurement, and microscopic examination. Use AI results to decide whether professional testing is warranted for your specimen.
What are regmaglypts and why do they matter?
Regmaglypts are shallow, rounded depressions on meteorite surfaces resembling thumbprints pressed into clay. They form during atmospheric flight as softer material ablates away while the meteorite tumbles. These distinctive scalloped indentations differ from the sharp, angular cavities in volcanic rocks and provide strong visual evidence supporting meteorite identification.
How much is a meteorite worth if it's real?
Meteorite values vary enormously based on type, size, condition, and provenance. Common iron meteorites may sell for $1-3 per gram, while rare lunar or Martian meteorites can exceed $1,000 per gram. Unusual specimens with aesthetic appeal, witnessed falls, or scientific significance command premium prices. Professional classification and authentication significantly affect marketability and value.
Where should I take a suspected meteorite for testing?
University geology or planetary science departments often provide identification services, sometimes free for potentially significant specimens. Natural history museums with meteorite collections can offer expert evaluation. Established meteorite dealers listed with the Meteoritical Society provide authentication services. Avoid cleaning or cutting your specimen before professional examination to preserve diagnostic surface features.