Portuguese firefighters and Spanish military personnel work together to battle a forest fire in the parish of Bouses, Oimbra, Ourense, Galicia, Spain on August 18, 2025. (Photo by Pedro Pascual/Anadolu Agency)

Four orphan barn owl chicks were found weak from hunger and thirst after their mother's death, are under treatment at the Dicle Wildlife Rescue and Rehabilitation Center before being released back into their natural habitat on September 23, 2025, in Diyarbakir, Turkiye. (Photo by Bestami Bodruk/Anadolu via Getty Images)

A woman reacts during the annual “Tomatina” tomato fight fiesta, in the village of Bunol near Valencia, Spain, Wednesday, August 27, 2025. (Photo by Alberto Saiz/AP Photo)

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.

Animal rights activists covered with fake blood sit on the floor during a protest against the use of animals in research to mark World Day for Animals in Laboratories in central Madrid April 24, 2014. The sign reads, “How many rabbits do your shampoo kill?”. (Photo by Andrea Comas/Reuters)

A female Indian rhinoceros called Maruska eats a vegetable birthday cake on her first birthday celebration at the Plzen Zoo on February 3, 2015 in Plzen, Czech Republic. (Photo by Ladislav Nemec/Isifa)

Spanish soldiers of the 7th Airborne Light Infantry Brigade “Galicia” fire a howitzer Light Gun L118 during maneuvers with other units in preparation to NATO's Very High Readiness Joint Task Force (VJTF) in Zaragoza, Spain, April 19, 2016. (Photo by Javier Cebollada/EPA)

Firefighters work to quell a fire on an alleged clandestine gasoline storage in the Ixtlahuaca community, Mexico on January 5, 2016. Looting broke out at dozens of stores in Mexico on Wednesday on the sidelines of protests against a steep gasoline price increase as authorities detained more than 200 people. (Photo by Mario Vazquez de la Torre/AFP Photo)