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Copper and Silver from United Copper Mine in Chewelah, Washington

Copper and Silver from United Copper Mine in Chewelah, Washington - Geospecimen
Accession #: 297.183
Title: Copper and Silver from United Copper Mine in Chewelah, Washington
Object Type: Geospecimen
Participants:
Physical Description: Copper and Silver from United Copper Mine in Chewelah, Washington. The bulk of the sample is in one large slightly iridescent stone, but there is additional chunks that have delaminated from the sample.
Description: Copper is critical to our technology because of its unique properties. Did you know: * Because it conducts electricity efficiently, phones contain more copper than any other metal - ½ ounce - over 12% of a phone's total weight. * Copper is biostatic - bacteria never grows on its surface. Hospitals use copper doorknobs strategically to lessen disease transfer. * Copper in buildings blocks radio waves, protecting people from emissions in hospital imaging labs and preventing eaves-dropping at the National Security Agency!
Category: History
Subjects/Topics/Concepts:
Mineral Sample (Natural History); Mining (Industry)
Geographical Reference: Chewelah (Washington->Stevens County)
Dimensions:
Object H x W x D 1 1/2 x 3 x 3 "
Materials/Techniques:
copper (Material)
silver (Material)
Credit Line: Gift of the Spokane Chamber of Commerce, 1931

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