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Pyrite cubic crystals on marl from Navajún, La Rioja, Spain (size: 95 by 78 millimetres [3.7 by 3.1 in], 512 grams [18.1 oz]; main crystal: 31 millimetres [1.2 in] on edge) Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold , hence the well-known nickname of fool's gold .
Sperrylite on chalcopyrite with magnetite, Oktyabersky Mine, Norilsk.Field of view 2.2 cm. Sperrylite is a platinum arsenide mineral with the chemical formula PtAs 2 and is an opaque metallic tin white mineral which crystallizes in the isometric system with the pyrite group structure.
[1] [2] The group is named for its most common member, pyrite (fool's gold), which is sometimes explicitly distinguished from the group's other members as iron pyrite. Pyrrhotite (magnetic pyrite) is magnetic, and is composed of iron and sulfur, but it has a different structure and is not in the pyrite group.
After reaching a net worth of more than $486 billion in December, Elon Musk’s wealth has sunk below $400 billion for the first time in 2025. Tesla—where Musk derives about 60% of his wealth ...
Those reserves are currently valued at a set rate of $42.22 an ounce, or around where the metal’s price sat in the early 1970s, producing a book value of $11 billion. At gold’s current spot ...
Still, the team has helped enrich the Hunt family, which Forbes says has a net worth of $24.8 billion, making it America’s 12th richest family. That’s up from $14.2 billion in 2015.
Copperas works are manufactories where copperas (iron(II) sulfate) is produced from pyrite, often obtained as a byproduct during coal mining, and iron. The history of producing green vitriol, as it was known, goes back hundreds of years in Scotland. [1] In 1814 the wool-producing city of Steubenville, Ohio had seven copperas-producing ...
The Semiconductor Industry Association reports that America’s share of advanced chip production, nearly nonexistent in 2022, is projected to reach 28% of global capacity by 2032. The funding has ...