1 Pound Tumbled Native Glacial Float Copper Nuggets Keweenaw Upper Michigan. Brand New. $25.00. or Best Offer. $3.00 shipping. 1 Pound of 1" Tumbled Copper Nuggets Natural Michigan Native Ore Pure Cu Metal. Brand New. $31.00. $9.99 shipping. 41 sold. 6lb 5oz HUGE Solid Native Copper Nugget from Keweenaw, Michigan MICHIGAN …
Float Copper. A ~9000 lb copper boulder likely represents a fragment of a vein of copper which was sheared by a moving glacier and carried along its base before depositing it 9 …
"The large piece of float copper (which was) on display in Marquette's Presque Isle Park is actually quite impressive as it weighs in at 28.2 tons and measures 13 feet x 15 feet," the travelthemitten.com reports. "This piece was discovered on private land in the Keweenaw Peninsula, and was kept from being melted down thanks to the efforts …
Float Copper Massive copper boulders like the Ontonagon Boulder once lay scattered all over Keweenaw Peninsula in northernmost Michigan. Keweenaw Peninsula that projects into Lake Superior was …
This is a beautiful high quality Keweenaw Michigan Native "Float" Copper nugget. Some of the finest and high quality copper comes from Michigan. The measurements of this nugget is 2.0" long and 1.0" wide. The weight is 4.8 ounces or 136.97 grams. Comes with a display case and a velvet carrying bag.
Even before the copper mining boom of the mid-1800's, copper was used by indigenous communities to make tools, jewelry, and other artifacts. Much of the copper that was used by these communities …
The Keweenaw Peninsula of Michigan has been nationally famous for over 100 years for its history of highly productive copper mining. The local basalt is criss-crossed with many thick veins of native copper …
This piece of float copper was dredged from the Keweenaw Waterway, Michigan, by the hydraulic dredge "New Jersey"; on May 27, 1932, while working under contract with the United States Engineers Office, Duluth. It was presented to the office by the contractor, the Zenith Dredge Company.
Hefty float copper nugget with natural green and purple patina on the surface. Prospected from Keweenaw, Michigan. Measures approximately 4 x 2.25 x 1.25 inches. Weighs 1 pound 12 ounces. All photos are illuminated by natural sunlight. We are happy to combine shipping on all orders with no additional cost.
This piece is 5"H x 4"W x 2"D and weighs 3.8 lbs. Michigan Native "Float" Copper Float copper is found throughout the Copper Country of Michigan and many nearby states. Glacial movements thousands of years ago altered the geologic deposits of the native copper by tearing and scouring the land. Copper, along with other
Large Float Copper Bookends start at 19 lbs. Our natural rock bookends are cut to show the best pattern, color and veining of each mineral. Float copper bookends are buffed polished and coated to enhance the beauty of the piece. Photos are representative only. Each piece is unique. Please specify size when you contact
This is a beautiful high quality Keweenaw Michigan Native "Float" Copper nugget. Some of the finest and high quality copper comes from Michigan. The measurements of this nugget is 1.50" long and 1.0" wide.
Sourced: Keweenaw Peninsula, Michigan USA; Minerals: Copper; Size: 5.5" x 3.5" x 14.5" See full details . ... This unique specimen of float copper was carried by glaciers during the last ice age, which ended some 12,000 years ago It was then deposited in its end moraine & subsequently unearthed by metal detecting (on private land with mineral ...
The Keweenaw Peninsula is often called "Copper Country" because of the amount of copper and its ore that was mined in this area. In fact, at 90 percent pure, much of this copper is the purest in the world, …
Objects made of Keweenaw copper have been found in archeological sites across the continent. ... Michigan Territorial Governor General Cass visits the Ontonagon Boulder, a large piece of float copper along the Ontonagon River. One cannot help fancying that he has gone to the ends of the earth, and beyond the boundaries …
This slab shows off the rough exterior and the pure Michigan copper on the inside that is finished to a high polish. This piece measures 10 1/2" L x 3" W x 1/4" Thick and weighs 2.3 pounds. Michigan Native "Float" Copper Float copper is found throughout the Copper Country of Michigan and many nearby states.
The Keweenaw area features quite a few rivers both big and small. Most are notable for their waterfalls, including Montreal Falls, Eagle River Falls, and Hungarian Falls (on Dover Creek), just to name a few. …
FLOAT COPPER IN MICHIGAN . by Theodore J. Bornhorst . 2016 . This document may be cited as: Bornhorst, T. J., 2016, Float copper, Keweenaw Peninsula, Michigan: A. E. Seaman Mineral Museum, Web Publication 3, 3p. This is version 1 of A. E. Seaman Mineral Museum Web Publication 3 which was only internally reviewed for technical accuracy.
Float Copper. The surface of the Keweenaw Peninsula and Isle Royale was covered by continental glaciers for millions of years until about 10,000 years ago. During this time as …
Float Copper Butchite Decorator. This one is approximately 11"H x 8.5"H x 2"D. Weighs 14.8 lbs. Michigan Native "Float" Copper Float copper is found throughout the Copper Country of Michigan and many nearby states. Glacial movements thousands of years ago altered the geologic deposits of the native copper by tearing a
Michigan float copper from the Keweenaw peninsula...This beauty coming in at just under # 500 lb s.....!!!. Who wants to haul this around for fun?
This is a beautiful high quality Keweenaw Michigan Native "Float" Copper nugget. Some of the finest and high quality copper comes from Michigan.
Float copper can come in many shapes and forms, with rounded over nuggets being the most common. But some pieces manage to have survived the immense pressure from the glaciers and maintain a rough exterior. This slab shows off the rough exterior and the pure Michigan copper on the inside. This piece measures 11 1/2" L
The 19-ton mass of native copper, exhibited in the Copper Pavilion, was recovered from the bottomlands of Lake Superior, offshore between Eagle River and Eagle Harbor in …
The earliest known metalworking in North America begins when Indigenous Peoples start mining copper on the Keweenaw Peninsula. They dug shallow mines and used heavy stones to break waste rock …
A small mass of "float" copper is on exhibit in the Copper Pavilion behind the 19-ton Lake Copper. Float copper refers to glacial-fluvial (river) transported native copper. Glacial ice plucked native copper from the bedrock and carried it along with many different sized rocks ranging from boulders to tiny particles. These masses of native ...
The stories of people and copper in the Keweenaw Peninsula have been intertwined for more than 7,000 years. Indigenous Peoples made copper into tools and trade items. Investors and immigrants arrived in the 1800s in a great mineral rush, developing thriving industries and cosmopolitan communities. Though the mines have …
Copper on the Keweenaw and Other Ponderables Last Updated: 29th Mar 2016 ... This transported copper, found mostly in glacial gravel deposits, is known as "float copper". It was deposited as the glaciers melted and receded. This float copper is found in sizes from that of less than the size of a pea to many tons in weight.
Indeed, the Keweenaw Peninsula is the largest known deposit of native copper in the world. Other rich locations are found in Kazakstan and Bolivia. Float copper comes in many shapes and sizes, …
The Keweenaw Peninsula, located in northern Michigan, was a major copper mining district at one time. "The Keweenaw Peninsula is the world's largest accumulation of native copper," Bornhorst says. "From 1845 to 1968 they mined 11 billion pounds. From 1845 to the 1930s, 80% of all the copper used in the U.S. came from the Keweenaw ...