Slag is the glass-like by-product left over after a desired metal has been separated from its raw ore. Slag is usually a mixture of metal oxides and silicon dioxide; however, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of the smelting, and minimizing any re-oxidation of the final liquid metal product before the molten metal is removed from the furnace and used to make solid metal. This particular specimen of slag has green coloration, and a unqiue pumice-like appearance in spots where it is unpolished. It's large enough to serve as a paperweight, and makes for a great sample to be passed around in earth science classrooms. Makes a great gift for the mineral collector in your family!
Note: Please be aware that this is a natural mineral and as such each piece is one of a kind! The one you receive may not be exactly the same as the ones pictured but it will be similar. Price is per each piece. They come in irregular shapes, sizes and weights.
The Star-Ball Magnetic Puzzle is the perfect creativity tool for innovators, artists, writers, students, and you!
Experience this sphere powered by the sun!
An ancient toy featuring optical illusion and hands-on fun that never grows old!
Working model representing the sun, earth, and moon and their relationships.
This is a deluxe soldering station that can handle any kind of application!
Use this kit to conduct experiments with models to learn about forces and simple machines!