An elephant with a shackled leg is pictured at the Hanoi Zoo in Hanoi on August 16, 2023. Legs in iron chains and unable to roam freely, the treatment of two elderly elephants at the Hanoi public zoo has drawn outrage from animal lovers across Vietnam. (Photo by Nhac Nguyen/AFP Photo)

The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the formula FeS2. This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.

Girls play in the makeshift refugee camp at the northern Greek border point of Idomeni, Greece, Thursday, March 17, 2016. Leaders of the EU's 28 divided nations reconvene in Brussels in hopes of ironing out disagreements on a proposed agreement with Turkey in the migrants crisis. (Photo by Vadim Ghirda/AP Photo)

A woman eats candy in the shape of a phallus during the Kanamara Matsuri, or Iron Phallus Festival through a street near the Kanamara shrine in Kawasaki outside of Tokyo April 5, 2015. The festival celebrates fertility and is used to raise awareness and money for the prevention of sexually transmitted diseases. (Photo by Thomas Peter/Reuters)

If you think you are looking at stunning sunset safari photographs, think again. From a herd of elephants trailing the savanna at sunset to a crocodile hungrily engulfing a baby impala, amazingly these clever pictures are actually made using nothing but props, toy animals and vegetables. Julia Wimmerlin has always dreamed of going on safari and found a way to channel her dream in a seriously creative way. Here: An elephant with plants of parsley, rosemary, tamarind and coconut boulders. (Photo by Julia Wimmerlin/Caters News)

American singer/songwriter Ashley Nicolette Frangipane, known professionally as Halsey arrives at Playboy's Midsummer Night's Dream at the Marquee Nightclub at The Cosmopolitan of Las Vegas on July 29, 2018 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/Getty Images)

Workers hang thousands of different colorful fabrics on iron wires tied between a bamboo framework and constantly turn them so that they dry perfectly in a flooded field in Narayanganj, Bangladesh on March 16, 2022. (Photo by Joy Saha/ZUMA Press Wire/Rex Features/Shutterstock)

Fat Jew makes his entrance at the first birthday party for White Girl Rosé hosted by Elite Daily at The Dream Downtown, Sunday, July 17, 2016, in New York. (Photo by Diane Bondareff/Invision for White Girl Rosé/AP Images)