nonesuch shale white pine copper mine chalcocite

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Nonesuch Copper Mine Near White Pine Michigan The Diggings

The Nonesuch Copper Mine is near White Pine Michigan. Historically the site has been associated with the Keweenaw Copper Mining District which is now part of the Ottawa National Forest. The Nonesuch Copper Mine was closed at the time of data entry with no known plans to reopen. Past operations took place from 1867 to 1885.

Copper Range Company Wikipedia

The White Pine mine contained a large stratiform body of chalcociteimpregnated siltstone and shale of the Precambrian Nonesuch Shale Formation. The ore also contained native copper usually as individual grains but often as sheets several feet long. The White Pine mine produced copper until 1995.

Highland Copper Company Copper Price Mining Michigan USA

Copper mineralization at White Pine exhibits a strong stratigraphic control confined to six darkgray siltstone and shale units in the basal 4.5 meters of the Nonesuch Formation. The Nonesuch Formation is a shallow lakebed sequence of siltstone mudstone and sandstone units with a radiometric age Pb/Pb of 1.09 billion years.

USGS Professional Paper 144 pp 169175 Nonesuch Shale

The Nonesuch mine about 3 miles west of the White Pine was productive intermittently from 1868 to 1885 and its recorded production is 389556 pounds of copper. The mine is developed by four shafts. 4 No. 3 the deepest went to the fifth level a depth of 460 feet.

The White Pine copper deposit Ontonagon County Michigan

Copper largely in the mineral chalcocite is found in the lowermost beds of the Nonesuch shale over many square miles near White Pine Ontonagon County Mich. The Nonesuch shale of late Keweenawan age is about 600 feet thick and is composed largely of gray siltstone. It overlies 2300 to 5500 feet of red sandstones and conglomerates the

Nonesuch Shale Wikipedia

The Copper Range Company opened the White Pine mine in Ontonagon County Michigan in 1955. The principal ore minerals were chalcocite and native copper . 4 The underground mine produced copper from the Nonesuch Shale until it closed in 1995.

Nonesuch Mine White Pine Ontonagon Co. Michigan USA

Two inclined shafts were sank by 1867 with two additional shafts sunk by 1869 the deepest being 460 feet. The mine worked the Nonesuch Shale a tightblack sandstone similar to what was worked at the White Pine Mine nearby. The copper from this deposit was not in large masses but small flakes s tered throughout the rock.

THE COPPER RESOURCES OF NORTHERN TABLE OF CONTENTS MICHIGAN

The copper sulfide deposits in the Nonesuch formation were discovered in outcrop in the 1850s but not mined until 1865. Only the native copper was recovered the chalcocite was left in tailings. The old White Pine mine which originally operated from 1879 to 1881 was purchased by the Calumet and Hecla Mining Company In 1904.

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