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| silver crystals, colorful porcelaneous nodules of datolite, and copper inclusions in calcite crystals come...courtesy Michigan Technological University Archives and Copper Country Historical Collections, Michigan Technological...started with the closure of the Champion mine in Houghton County by the Copper Range Company in September...reserves (Fields 1997).This was the last native copper mine in operation by the Copper Range Company and was...came with the closing of the White Pine mine, Ontonagon County, in September 1995. New, stringent environmental |
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| 08 January 2015 The Occurrence of Porcelaneous Datolite in MichiganÕs Lake Superior Copper District Figure...beautiful yellow datolite nodule, 0.9 x 1.1 inches, recovered from the Hancock mine dump by John Perona...of a Keweenaw copper mine to the icy depths of Lake Superior, serious datolite collectors have sought...combination. Imagine descending a steep 2,000-foot-deep mine shaft in the dead of a Keweenaw winter with only...over heels into the black depths of an abandoned mine. All of this effort was expended on clandestine |
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| at the Caledonia Mine, Ontonagon County, Michigan -- Downloaded by [University of Michigan] at 08:51...Figure 1. The 1996 mining crew at the 4th level, Caledonia adit. Left to right, Clyde Gruver, Jim Brooks...Photo by Ted Bornhorst, October 1996. T he Caledonia mine, owned by Red Metal Minerals, is located at...southern end of the famous Michigan native copper district and is the last operating mine on the copper range...specimen-mining activity in 1996. History The Caledonia Mining Company started mining operations in 1863 |
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| Peninsula TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net T he Lake Superior...of mines in the district, especially the Quincy mine. Crystals ranged in size from micro to large-cabinet...pumpellyite, and laumontite. Analcime, barite, datolite, apophyllite , natrolite, and microcline (variety...in the tenth grade. I have collected most of the mine dumps during the past sixty years and have found...Tom Rosemeyer, a native of Upper Michigan, is a graduate of Michigan Technological University in Houghton |
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| February 2015 Figure 2. A generalized map of the Michigan copper district showing the location of new finds...arborescent copper crystal groups cached at the Central mine town site, (2) copper crystals recovered from Lake...fissure vein, (3) hundreds of copper from the Indiana mine, and (4) more than two hundredV aecilS mens of ...analcime/calcitecrystal groups from the Rhode Island mine. This article describes these and other finds made...the White Pine mine at the southern end of the district. Keweenaw Point, Keweenaw County The waters off |
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| articles on the Michigan Copper Country by Tom Rosemeyer (including the one in this issue), datolite has been...the topic of this Connoisseur’s Choice feature. Datolite crystals occur in many colors that range from...green, and pink to white and colorless; nodular datolite is typically white or pastel shades of pink, yellow...fluorescence characterizes some New Jersey datolite. Datolite is commonly seen in monoclinic (2/m) crystals...of some datolite and is derived from the Greek word dateisthal meaning “to divide.” Datolite is a calcium |
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| Michigan Mineralogy: A LOCALITY INDEX TOM MORRIS, JR. 4553 Shenandoah Allen Park, Michigan 48101 Tom...occurrences. These localities have been listed by county; and, strictly for convenience, the list has been...compiling this information was The Mineralogy of Michigan (Heinrich, 1976), which should be consulted by...locality labeling of Michigan specimens. It should be pointed out that the list of Michigan mineral localities...None theless, with the aid of a good state or county map, plus local inquiries, the list could be helpful |
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| photo (October 2017). 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Twenty-sixth...located in Keweenaw County, Michigan, was made by Doug Miller of Calumet, Michigan. Miller, a thirty-year...area about a half-mile northwest of the North Cliff mine. He had checked part of this area earlier in the...secTom Rosemeyer, a native of Upper Michigan, is a graduate of Michigan Technological University in Houghton...fissure vein section composed of prehnite and datolite with small blebs of silver. In the foreground |
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| the Tom Rosemeyer 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Keweenaw Figure...of copper crystals collected at the Ojibway No. 1 mine in summer 2009 by Steve Whelan. The specimen is...Copper Country Figure 2. Generalized map of the Michigan copper district showing the location of the new...Mineral Finds in Michigan’s Copper Country T he Michigan Copper Country, also known as the Lake Superior...into Lake Superior at the western end of Upper Michigan. The now-dormant copper mining industry, which |
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| iners with a large mass of native copper in the Quincy mine ca. 1918. (Michigan Technological University...Donald Pearce (1941-1989) The “Copper King” The MICHIGAN COPPER COUNTRY L. W i l s o n New Mexico Bureau...t a n l e y J. D y l II Seaman Mineral Museum Michigan Technological University % 1992 T h e M in e...crystal group, 13.6 cm, from an unknown mine in the Michigan Copper Country. Richard A. Kosnar collection;...wrote the classic work on the copper deposits of Michigan in 1929. Photo by Wendell E. Wilson. TENT . |
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| quality rivaling fine porcelain. This unique form of datolite hails from the legendary Lake Superior copper...Indeed, many datolite nodules sport flecks of native copper, and specimens exist of datolite intergrown...ahead of the story. Michigan’s Copper Country datolite has been collected, prized, fashioned, and proudly...Keweenaw Peninsula’s datolite by diving into this article on the occurrence of datolite and the never-before-published...never-before-published collecting history of major datolite localities and collecting personalities. Stanley |
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| 1632 Camp Bird Mine Road P.O. Box 586 Ouray, Colorado 81427 I first went to the mine in the spring of...botryoidal nodules of pink to red porcelanous datolite along with na tive copper and, more rarely, native...and epidote. In 1985 mineral rights for the Caledonia mine were bought by Richard Whiteman, president...rehabilitated the No. 4 adit of the mine and are presently operating the mine for the re covery of mineral...collecting trips. Over the past five years the Caledonia mine has produced many fine hand specimens and an |
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| by William Besse. 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net An UNUSUAL Glacial...formed to where they would ultimately be found. In Michigan this took place during multiple periods of continental...collecTom Rosemeyer, a native of Upper Michigan, is a graduate of Michigan Technological University in Houghton...road construction on public property in Hancock, Michigan, on Monday evening, 17 August 2015. Jay and Chad...March/April 2016 177 Other Articles In This Upper Michigan Series Downloaded by [La Trobe University] at |
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| Counties, Michigan TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net...Houghton and Keweenaw counties, Michigan. Every summer in the Copper Country, mine dumps from a bygone era of...copper mining are being crushed and hauled off the mine sites. The crushed rock is mainly used for road...and recover copper that mistakenly ended up in the mine dumps. The lucky person may also find silver in...locality. Collected at the Tamarack Jr. No. 1 mine, Houghton County, by Tom Rosemeyer, 11 August 2012. John |
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| TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net All mineral photography...History and Mineralogy of the St. Louis Mine Houghton County, Michigan Twentieth in a series of articles...at the St. Louis mine, located about 1.3 miles east of the village of Laurium, Michigan. This little-known...microcrystals in amygdules contained in a lava flow top. The mine has also yielded uniquely banded agates that occur...of the flat-topped agateproducing mine dumps at the St. Louis mine. The foundation on the right was the |
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| Treasure TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Unearthed from...August 2013 by Jay and Chad Just near Calumet, Michigan. The boulder was ripped loose from the conglomerate...Tom Rosemeyer, a native of Upper Michigan, is a graduate of Michigan Technological University in Houghton...construction of Figure 2. Map showing Calumet, Michigan, where the glaciated copperbearing Calumet and...this article float Other Articles In This Upper Michigan Series Downloaded by [UNIVERSITY OF ADELAIDE |
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| 2013). TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Up Twenty-first...KEWEENAW COUNTY, MICHIGAN Tom Rosemeyer is a native of Upper Michigan and a graduate of Michigan Technological...shoreline of Lake Superior at Esery Park, Keweenaw County. Larry Maltby photo (July 2013). Figure 3. Map...Mineral Museum collection, Michigan Technological University, in Houghton, Michigan. olorful banded agates...agates, coined in about 1900 by Alfred C. Lane, a Michigan state geologist, has been used for the loose agates |
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| Retreat Recap Alan Hills Stayed overnight near Ontonagon on the Lake Superior shoreline. I walked along...the Caledonia Mine near Adventure Mine. I had signed up for a full day of mining inside the mine. I had...others in our party plus the two trip guides. The mine was cool but we all stayed warm moving rock (spoil...through about 4 feet of rock. Once the floor of the mine is reached, the going is maybe easier since the...anyone though. In the morning session I found a datolite and some little copper specimens including one |
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| Mineralogy of Michigan by E. W. Heinrich updated and revised • by George W. Robinson M By E W~ Hellnr]ch...Museum Michigan Technological University Houghton, Michigan 49931 2004 © MINERALOGY OF MICHIGAN 3 FOREWORD...FOREWORD Michigan has a long and varied geologic history that includes repeated episodes of volcanism...before the first Europeans set foot here. When Michigan became a state in 1837, one of the first actions...and we continue to learn more about them today. Michigan minerals helped to build the state and nation |
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| Lakes States Wisconsin, Indiana, Illinois, Michigan, by June Culp Zeitner $5.95 Gem Guides Book...our knowledge and enjoyment of this great owners, mine and quarry operators and science by collecting.... and Michigan. Dow Chemical has reported finding diamonds in the kimberlites of upper Michigan, and vast...shoreline on both Lake Superior and Lake Michigan. Michigan is the state with the most shoreline on these...fresh water seas, with waters of Lake Superior, Michigan and Huron virtually surrounding it. Illinois and |
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| Copper-bearing Amygdaloidal Lode Houghton County, Michigan Lake Superior Native Copper District Sixteenth...Country TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net T he Lake Superior...Superior native copper district, also known as the Michigan Copper Country, is located on the sparsely populated...into Lake Superior near the western end of Upper Michigan. The Keweenaw winters can be long and cold with...feet (6,400 vertical feet), making it the deepest mine shaft in the Western Hemisphere. Tom Rosemeyer collection |
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| istory and Mineralogy of the Indiana Mine Ontonagon County, Michigan Ninth in a series of articles on the...No. 2 (Indiana Copper Company) mine dump in Ontonagon County, Michigan. The individual crystals, which...State Highways 26 and 38 (Lake Mine Junction) in northern Ontonagon County. The property consists of 1,280...2-square-mile property is owned by the state of Michigan and is traversed by Highway 26 on the northwest...Mineralization Volcanic rocks that crop out in the mine area are part of the Portage Lake Volcanics (PLV) |
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| Running for fifteen days from February 1–15, the city of Tucson plays host to literally hundreds of vendors.............. 11 Porcelaneous Datolite of the Keweenaw Peninsula, Michigan ..............................I can remember, my family has always had a gold mine claim. But during the Second World War, all gold...was not like other mining areas such as Virginia City which followed a vein. The Calico silver deposits...Dakota, we noticed a sign saying, “Join us at our County Fair.” We thought it would be a good way to walk |
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| Lake Superior near Eagle Harbor, Keweenaw County, Michigan. The near-shore find, now called the Laker...Tom Rosemeyer, a native of Upper Michigan, is a graduate of Michigan Technological University. He now... The 3.3 × 5.8-cm specimen was part of a larger mass of intergrown crystals recovered from the center...August 2008, Barron and Peterson left Calumet, Michigan, with Peterson’s 23-foot cabin cruiser in tow...× 20-cm) mass of crystallized copper. By gently wiggling the “knob” of copper, the whole mass was extracted |
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| Photographs JanuarylFebruary: Copper, Ray, Pinal County, Arizona. Les Presmyk specimen, Jeff Scovil photo...with quartz and albite, Tourmaline Queen mine, San Diego County, California. Houston Museum of Natural...claims, Farncomb Hill, Breckenridge district, Summit County, Colorado. Denver Museum of Natural History specimen...Azurite on malachite ring, Flambeau mine, Ladysmith, Rusk County, Wisconsin. Dan Behnke specimen and...Sweetwater mine, Reynolds County, Missouri. Marvin Rausch specimen, Jeff Scovil photo. Adularia, Michigan, I10 |
Caledonia Mine, Mass City, Ontonagon County, Michigan, USA