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 fan lies passed out on the first day of the Wacken Open Air heavy metal music fest on August 4, 2011 in Wacken, Germany. Approximately 75,000 heavy metal fans from all over the world have descended on the north German village of 1,800 residents for the annual three-day fest. (Photo by Sean Gallup/Getty Images)

An undated handout picture made available by the Symbio Wildlife Park on 28 November 2016 shows three Pygmy Marmoset monkeys including an adult male, a female juvenile and a four-week-old baby, at the Symbio Wildlife Park in Helensburgh, South of Sydney, New South Wales, Australia. (Photo by EPA/Symbio Wildlife Park)

Everyone wants to get something for nothing - whether it's a lucky upgrade that means you can turn left when you get on a plane instead or heading off into the economy seats, or even getting a few extra features thrown in for free when you buy a new car.

As some of the sharpest businesses around, no-one understands this quite as well as casinos and that's why they all have a system that they call comps. It's short for "complimentary offers" and these are special treats specially designed to reward you for your loyalty to the casino in question. They're basically bonuses.

One glance at the 3D models created by Rebeca Puebla is enough to realize that this artist has a soft spot for BDSM. The finely detailed model of a nun with heavily tattooed hands and a ball gag in her mouth or an Asian woman in a latex suit of a horse leave no doubt about it. At first, Rebeca Puebla has started out as a traditional illustrator. However, in later years she became a 3D character artist for films, TV, and video games. Though she has many regular-looking 3D models and illustrations, many of her works are quite controversial featuring 3D models of ladies in latex suits or wearing Nazi uniforms. (Photo by Rebeca Puebla)

Every November (AKA Dinovember), Refe Tuma and his wife pose their kids’ plastic dinosaurs engaging in activities in order to convince their kids the toys come to life while they sleep. It started out small, with dinosaurs stealing food from the kitchen and making small messes, but Dinovember quickely escalated into dinosaurs playing board games, kidnapping other toys, and watching that scene from The Land Before Time while crying tiny little toy dinosaur tears made from paper.

Conservation staff members move the eight-years-old White Rhino Seha into a truck in Johannesburg, South Africa, 28 July 2017. Seha is the only survivor after five rhinos where poached on the same game farm. South Africa has the world's largest population of Rhinos in the world. (Photo by Kim Ludbrook/EPA/EFE)

Three-years-old dog Hope uses a wheelchair to run next to its owner Regine Grosinger in Vienna September 3, 2014. Hope was found with cut-off back legs in the countryside and brought to an animal asylum when it was four-month-old. Grosinger took the dog home two months later and had a wheelchair manufactured for it. (Photo by Heinz-Peter Bader/Reuters)