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Copper -superb spinel twins
Copper -superb spinel twins Copper -superb spinel twins Copper -superb spinel twins
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Copper -superb spinel twins (Ref: 14.1-407)

Central Mine, Keweenaw Co., Michigan, United States
74mm x 41mm x 34mm
minID: NR6-NFA
Simply fantastic, a very well crystallized Copper with sculptural form much like a tree or cactus. The most prominent twin crystal at the top is 3.1 CM tall and the whole is very esthetic. From the Central mine of Michigan, this classic site produced many excellent spinel twins in its working life. This is well above the quality of "typical" pieces which are now uncommon. A fine USA classic copper that would be desirable from anyplace, a super example of the fames Upper Peninsula copper country. The piece displays great from almost any angle.
From: Well-Arranged Molecules
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See Also

Copper ( spinel twin )
Ray Mine, Ray District, near Kearney, Dripping Springs Mts., Pinal County, Arizona, USA
$320
34mm x 21mm x 16mm
From: Bob Griffis Minerals
Copper
Cliff mine, Keweenaw Co., Michigan, USA
$1225
230mm x 160mm x 35mm
From: Weinrich Minerals
Spinel Twin Native Copper
Dzhezkazgan mining district, Karaganda region, Kazakhstan.
$400
From: Arkfeld Minerals
Spinel Twin Native Copper
Dzhezkazgan mining district, Karaganda region, Kazakhstan.
$400
From: Arkfeld Minerals
Copper
Centennial mine, Keweenaw Co., Michigan, USA
$1350
210mm x 110mm x 30mm
From: Weinrich Minerals
Copper
Central Mine, Keweenaw County, Michigan, USA
$1450
90mm x 70mm x 70mm
From: The Arkenstone
Copper ( spinel twin )
Ray Mine, Ray District, near Kearney, Dripping Springs Mts., Pinal County, Arizona, USA
$100
35mm x 26mm x 15mm
From: Bob Griffis Minerals
Copper
Central mine, Keweenaw Co., Michigan, USA
$800
240mm x 85mm x 5mm
From: Weinrich Minerals
Copper (Spinel-Twinned)
Chino Mine (Santa Rita Pit; Santa Rita Mine), Santa Rita, Grant Co., New Mexico, USA
$1250
70mm x 10mm x 10mm
From: The Arkenstone
Cuprite with Copper
Ray mine, Pinal Co., Arizona, USA
$1250
100mm x 75mm x 5mm
From: Weinrich Minerals
Copper Skull
Centennial Mine, Houghton County, Michigan
$1117
145mm x 118mm x 93mm
From: Mineral Classics
Copper
Houghton Co., Michigan, USA
$1115
170mm x 110mm x 80mm
From: Weinrich Minerals
Calcite with Copper
Quincy mine, Houghton Co., Michigan, USA
$920
32mm x 26mm x 18mm
From: Weinrich Minerals
Copper (twin)
Itauz Mine, Dzhezkazgan, Kazakhstan
$1200
60mm x 20mm
From: The Arkenstone
Copper
Emke Mine, Onganja, Seeis, Namibia
$1200
70mm x 50mm x 45mm
From: Marin Minerals
* price is an approximate conversion and may not be accurate.

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