This large chunk of Moscovite Mica, 2-3 inches in diameter, is great for any mineral collection.
A common rock-forming silicate, generally colorless and ranking No. 4 on the Mohs scale of hardness. It has a variable chemical composition of potassium, magnesium, silicon, and oxygen, with water in its crytalline structure. Large, clear plates of mica where once commonly used for windows, but more often used as an insulator.
Is it a demonstration of a scientific law or a work of art?
Over 300 electronics projects in this kit will keep the young scientist busy!
Build over 60 projects with this deluxe version of the Snap Rover kit!
This SUPER Erector Construction set is one of the best you'll find anywhere!
Exciting magnet exploration for ages 8 and up!
The Star-Ball Magnetic Puzzle is the perfect creativity tool for innovators, artists, writers, students, and you!