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.
Defy gravity with this cool balancing eagle!
A touch of joy. A touch of science. Light responds to your touch and to the music in your room!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
You don’t think recycling is cool? Get a look at this, we’re sure you’ll change your mind!
Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!
The LCD Digital Microscope II is a professional biological microscope at an affordable price. Up to 1600X with digital zoom!
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