🧵 1. Surprising discovery: Fragments of one of Earth's rarest minerals, Humboldtine, found in an old mineral collection in Germany. #world
🧵 1. Surprising discovery: Fragments of one of Earth's rarest minerals, Humboldtine, found in an old mineral collection in Germany. #world
🧵 2. Humboldtine, known from only 30 locations worldwide, rarely forms tiny crystals and is mainly found as a yellow, amorphous mass.
🧵 3. A 75-year-old letter led experts to the mineral's existence. The letter mentioned the presence of Humboldtine in coal seams in Germany.
🧵 4. After searching the historic mineral collection, six fragments were confirmed to be Humboldtine, doubling the total known amount.
🧵 Read more at: https://www.forbes.com/sites/davidbressan/2024/01/19/one-of-the-rarest-minerals-on-earth-found-thanks-to-a-75-year-old-letter/