👉 Berycoid is a type of mineral that is found in the Earth's crust. It is composed primarily of iron oxide, which can be found in various minerals and rocks. Berycoids are commonly found in the Earth's mantle and upper crust, but they can also occur in the Earth's surface. The term "berycoid" was coined by British geologist Sir Arthur Llewellyn Jones in 1925 to describe a type of mineral that is similar