Jay Schippers (203) in action during the fourth BMX World Cup competition in Papendal, Netherlands on June 12, 2022. (Photo by Robin van Lonkhuijsen/ANP/Alamy Live News)

A model displays a creation by designers members of the Carabobo Sostenible program who present a collection made of corn cob husks, plastic, and paper in front of the facade of the Virgen del Carmen church in the town of Mariara, Carabobo state, Venezuela, on August 3, 2023. (Photo by Juan Carlos Hernandez/AFP Photo)

A motorcyclist, Helton Garcia dressed as Santa Claus, rides his motorcycle before handing out gifts to children in a rural school in Santo Antonio do Descoberto, state of Goias, Brazil on December 10, 2023. (Photo by Adriano Machado/Reuters)

The Mad Hatter's tea party, a scene from a theatre production of “Alice In Wonderland”. (Photo by Hulton Archive/Getty Images). Circa 1910

Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO3. In its (rare) pure form, it is typically a rose-red color, but impure specimens can be shades of pink to pale brown. It streaks white, and its Mohs hardness varies between 3.5 and 4. Its specific gravity is between 3.5 and 3.7. It crystallizes in the trigonal system, and cleaves with rhombohedral carbonate cleavage in three directions.

A news crew runs from flames southeast of Middletown, Calif., on Tuesday, September 15, 2015, as winds kick up the Valley fire. (Photo by Wally Skalij/Los Angeles Times/TNS)

Britain's skip Eve Muirhead, right, embraces Anna Sloan after defeating Switzerland to win the women's curling bronze medal at the 2014 Winter Olympics, Thursday, February 20, 2014, in Sochi, Russia. (Photo by Robert F. Bukaty/AP Photo)

Participants kiss on a platform as they take part in the annual event “No Trousers Tube Ride” in London, Sunday, January 8, 2023. The No Trousers Tube Ride returns to London, the first time the event had taken place since January 2020, due to Covid. (Photo by Kin Cheung/AP Photo)