This large chunk of peacock ore (Bornite), 2-3 inches in diameter, is great for any mineral collection.
Bornite is a sulfide mineral with chemical composition Cu5FeS4 that crystallizes in the orthorhombic system (pseudo-cubic). It has a brown to copper-red color on fresh surfaces that tarnishes to various iridescent shades of blue to purple in places. This striking iridescence gives it the nickname peacock copper or peacock ore. Bornite is not disimilar to chalcopyrite (both are important copper ores), but bornite bears a natural iridescence that must be artificially added to chalcopyrite. Many samples of chalcopyrite are sold with this artificial iridescence but bornite exhibits it on principle. Makes an excellent gift for the earth science instructor or geologist in your family.
Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!
This classic desk toy will keep you amused!
The Y-Ball Magnetic Puzzle is the perfect creativity tool for innovators, artists, engineers, writers, students, and you!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
Great reference card for chemistry and physics students.
Create beautiful art with this amazing sun paper!
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