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M715 Natural Copper & Cuprite

M715 Natural Copper & Cuprite


Here is an impressive specimen of  Natural Copper and Cuprite on matrix from the Milpillas Mine in Sonara, Mexico.  This mine is no longer open to mineral collectors.  The natural copper covers different areas of this specimen. There is also Cuprite mixed in this piece.  It measures nearly 2 1/4″ x 1 7/8″ x over 1 3/8″.  This interesting specimen is a lovely work of nature.

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Copper is a reddish colored metal with a high electrical and thermal conductivity.  It has its characteristic color because it reflects red and orange light and absorbs other frequencies in the visible spectrum due to its band structure.  It is in the same family as Silver and Gold and is a malleable metal.  It is beautiful natural or polished.

Cuprite is a secondary mineral which forms in the oxidized zone of copper sulfide deposits. It frequently occurs in association with native copper, azurite, chrysocolla, malachite, tenorite and a variety of iron oxide minerals.  It frequently forms as an encrusting reddish coating over Copper.  Cuprite was first described in 1845 and the name derives from the Latin cuprum for its copper content.

Additional information

Weight1.00 lbs
Dimensions2.25 × 1.875 × 1.375 in

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