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Earth Science/Geology
Rocks & Minerals
Slices of Pure Silicon
Slices of Pure Silicon
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Slice of Pure Silicon
RM-569
~12.5 cm (~4.9") dia.
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Pure silicon slices are the actual starting material for most integrated circuits.
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Pure silicon slices are the actual starting material for most integrated circuits. Cut from a large single crystal boule of silicon, the slices are then masked, etched and deposited with other materials to make hundreds of semi-conductors and transistors. One side mirror finish & one side iridescent. 15.4 g, 12.5 cm (4.9”) dia.
Naturally Magnetic Lodestone (Magnetite)
Lodestone is a natural magnet that will attract objects such as staples, iron filings and needles.
Polished Natural Copper Samples
Metallic copper in a rock matrix. These beautiful, polished slices come from Michigan.
Pyrite Cubes in Matrix
Cubic specimens of FeS
2
, formed over 100 million years ago by sulfur reacting with iron.
Sticky Stones
Don't be fooled by these seemingly normal stones; they're magnetic!
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