New Mineral Copernikite Found in 5,000-Year-Old Polish Meteorite

A team of Polish researchers has identified a mineral never before formally recognized, hidden inside the Morasko meteorite, an iron-rich rock that fell near Poznan in western Poland between 5,000 and 6,000 years ago. The University of Silesia announced the find and named the mineral copernikite, after the astronomer Nicolaus Copernicus (1473 to 1543).

According to the university, copernikite is the first oxide mineral with a tunneled hollandite structure ever found in a meteorite anywhere in the world. It is also the 80th new mineral that University of Silesia scientists have discovered, as reported by The Times of India.

A few tiny grains in one specimen

The amount of material is very small. The team found copernikite in a single specimen, and none of its grains is larger than 0.3 millimeters. The grains sit inside fluorapatite, a phosphate mineral, in a graphite-rich zone of the meteorite that also holds bits of troilite, an iron sulfide.

That zone belongs to one of the more complicated parts of the Morasko rock. Its metal holds rounded or oval nodules of troilite and graphite, some of them several centimeters wide, and each nodule can contain its own mix of minerals. Those small pockets give researchers many separate chemical settings to study.

Chromium gives copernikite a green color. Under reflected light in the published microscope image, though, the grains look light gray.

How the find became official

A new mineral counts only after the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (CNMNC-IMA) approves it. The commission accepted copernikite in early 2026. Its chemical formula combines potassium, titanium, chromium and oxygen.

Materials with a broadly similar chemistry had shown up in the scientific literature long before. Comparable phases were reported in 1982 in Australian lamproites, volcanic rocks found with diamond deposits. Those reports did not include the detailed analysis needed to define a separate mineral species, so the material stayed unnamed.

A mineral built around tunnels

Copernikite belongs to the priderite group, a family of minerals whose atoms form open channels. Inside, octahedra (eight-faced units) containing titanium and chromium link together to make the walls of these tunnels. Potassium, barium and calcium atoms sit in the spaces inside the channels.

This arrangement is what separates copernikite from other phases made of similar elements. Two substances can share most of their ingredients and still stack their atoms differently, and mineralogists use that crystal structure to decide whether something is a distinct species.

Why it matters for meteorite research

Morasko has been studied for years, and it keeps turning up minerals nobody had described. Copernikite is the fourth new species formally tied to the meteorite. Moraskoite was described in 2015, czochralskiite in 2016 and crisaite in 2025. Each came from closer study of the nodules, whose varied mineral mixtures have repeatedly held unrecognized substances.

The meteorite is named for Morasko, a district of Poznan where its fragments were collected. Researchers estimate that it reached Earth roughly five to six millennia ago, and they are still working out what it contains. Finding a tunnel-structured oxide in it adds a mineral type that had not previously been seen in any meteorite.

Who did the work

Several Polish institutions took part. From the University of Silesia’s Faculty of Natural Sciences came Professors Evgeny Galuskin and Irina Galuskina. Professor Andrzej Muszynski of Adam Mickiewicz University joined them, as did Professor Joachim Kusz and Dr. Maria Ksiazek of the University of Silesia’s Faculty of Science and Technology. Grzegorz Zielinski of the Polish Geological Institute, National Research Institute, also contributed.

Source: The Times of India