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| 2014 THE KEARSARGE Copper-bearing Amygdaloidal Lode Houghton and Keweenaw Counties, Michigan TOM ROSEMEYER...measuring 5.5 × 10.0 cm, attributed to the South Kearsarge mine. Author’s specimen, Terry Huizing photo. 276...University] at 07:52 12 December 2014 T HE KEARSARGE LODE was one of seven blanket-type native copper...after the U.S.S. Kearsarge by a former naval officer who became an employee of the Calumet and Hecla Mining...the secondmost-productive lode discovered in the Michigan copper district. In the heyday of mining it became |
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| copper in the Quincy mine ca. 1918. (Michigan Technological University Archives, Houghton) D e d ic ated...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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| Tom Rosemeyer 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Keweenaw Figure 1. A...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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| 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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| 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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| native of Upper Michigan and a graduate of Michigan Technological University in Houghton. Since retiring...year. During the last four years, the crushing of mine dumps (poor-rock piles) for road repairs and construction...operations, primarily in Keweenaw County, have increased the need for mine-run rock for the construction... resulting in the slow disappearance of smaller mine dumps. The end of copper mining in the Portage Lake...of the Copper Range Company’s Champion mine in Houghton County. Downloaded by [Florida State University] |
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| ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net T he Lake Superior copper...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...native of Upper Michigan, is a graduate of Michigan Technological University in Houghton. He now spends |
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| ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Unearthed from a Pleistocene...boulder was recovered. Photo courtesy Google Earth. “Calumet” 47°13 25.70 N 88°27 05 W Google Earth; 9 May 2014...preservation of a large boulder of rich copperbearing Calumet and Hecla Conglomerate float that was discovered...in August 2013 by Jay and Chad Just near Calumet, Michigan. The boulder was ripped loose from the conglomerate...568 ROCKS & MINERALS the Calumet and Hecla Mining Company. The Calumet and Hecla Conglomerate is one |
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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...agates that have been collected from mines on the Kearsarge lode (Rosemeyer 2012) and constitute another major |
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| Amygdaloidal Lode Houghton County, Michigan TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter...of the dense basalt matrix at the Wolverine No. 2 mine dump. These small and inexpensive detectors have...agate itself. Collected by Ray Just, C & H No. 21 mine, 10 July 2011. uring the past sixty years (1952–2012)...various mine dumps along the Kearsarge copper-bearing amygdaloidal lode in Houghton County, Michigan. These...excavating the agatebearing zone of the Wolverine No. 2 mine dump during the annual Copper Country Mineral Retreat |
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| MICROMOUNTING AT THE KEWEENAW PENINSULA, MICHIGAN By PAUL B. MOORE and RICHARD M. 6EGER Depr. of Geolophysical...is well-known for its fine specimens of copper, datolite, calcite xls, arsenides, etc. which appeared during...collectors with limited time, may we suggest the Hancock Mine (on Ingot St., Hancock). The dump looks terrible...due to the parallel growth of xls. At the Hancock Mine, Hancock, it occurs upon xls of epidote and quartz...also at Centennial Mine, Calumet; Iroquois Mine, and Cliff Mine, Cliff; Quincy Mine, Hancock, with chlorastrolite; |
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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 |
 | Cornwall, H.R., Runner, J.J., Stromquist, A.A., Swanson, R.W., White, W.S. (1949) Detailed geologic map of the recently active copper mines; Houghton and Keweenaw Counties, Michigan. Open-File Report Vol. 1949 (50-4) US Geological Survey doi:10.3133/ofr504 | Report (issue) |
| copper nines, -..- roughton and Keweenaw Counties, Michigan H. R. Cornwall, J. J. Runner, A. A. Stromquist................. 10 Central Exploration fissure mine, 12 Introduction................ + (- ; Stratigraphy...Structure, 17 17 18 Distribution of copper > Kearsarge lode, 19 19 Stratigraphy, .. 19 Structure...Structure ... 21 Mineralogy.,*. 22 Page "' Kearsarge lode ...*»...................... 33 The Houghton conglomerate *>re body, Allouez No* 3* shaft.* *«* -.» » .*-* |
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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...industry was the shutdown of all Calumet & Hecla, Inc.* mines in Houghton and Keweenaw Counties by a labor |
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| (October 2017). 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Twenty-sixth in a series...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...native of Upper Michigan, is a graduate of Michigan Technological University in Houghton. He now spends...fissure vein section composed of prehnite and datolite with small blebs of silver. In the foreground |
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| colored datolite, a borosilicate (CaBSiO4OH) vesicle filling from a basaltic Houghton County lava flow...the surface and between the nodular masses. The Michigan Bicentennial symbol (back cover) incorporates...Survey Division BULLETIN 6 THE MINERALOGY OF MICHIGAN by E. Wm. Heinrich Professor of Mineralogy and...University of Michigan Ann Arhor, Michigan Lansing, Michigan 1976 STATE OF MICHIGAN WILLIAM G. Mrr...State of Michigan CL '48 s.321.6. Printed by Speaker-Hines and Thomas, Inc., Lansing, Michigan. Available |
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| University University Michigan Townsend Drive Drive 1400Townsend 1400 Houghton, Houghton, Michigan Michigan49931-1...Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, Keweenaw Peninsula, Michigan: Institute...Proceedings, 40th 40thAnnual AnnualMeeting, Meeting,Houghton, Houghton,Ml, 40, part part2, 2, 185 185p. p. MI,v...Lake Superior Superior Geology Peninsula, Michigan" Michigan" (Bornhorst (Bornhorst and others, 1983)... time, we considered that that "It is held at Michigan Technological presumptuous for for us us to put |
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| William Besse. 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net An UNUSUAL Glacial Silver...formed to where they would ultimately be found. In Michigan this took place during multiple periods of continental...native of Upper Michigan, is a graduate of Michigan Technological University in Houghton. He now spends...road construction on public property in Hancock, Michigan, on Monday evening, 17 August 2015. Jay and Chad...overtook him and his wife, and they headed back to Calumet, their hometown, with their find. First they went |
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| Microcrystals In the Calumet and Hecla Conglomerate Houghton and Keweenaw Counties, Michigan TOM ROSEMEYER...ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net T Twenty-eighth in a series of...occur in the Calumet and Hecla Conglomerate in Houghton and Keweenaw counties, Michigan. Every summer...Country, mine dumps from a bygone era of copper mining are being crushed and hauled off the mine sites....and recover copper that mistakenly ended up in the mine dumps. The lucky person may also find silver in |
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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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| Pewabic Copper-bearing Amygdaloidal Lode Houghton County, Michigan Lake Superior Native Copper District Sixteenth...TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net T he Lake Superior native...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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| TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Up Twenty-first in a...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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| MICROCLINE IN THE NATIVE COPPER DEPOSITS OF MICHIGAN Ina KrorN, Stanf ord, U ni.oersity, C al'iJorni...intensive mining activity in the copper country of Michigan, and detailed study of the native copper deposits... 5 Julien, A. A., Note on a feldspar from the Calumet Copper rr'ine: Annals N. Y. Acail. Sci., 12, 650-654...650-654 (1900). 643 IRA KLEIN on which the Calumet Mine was sunk, pointing out its adularialike habit...is aware of only two such localities outside of Michigan from which secondary feldspar is reported. A "pink |
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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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| 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...11 August 2008, Barron and Peterson left Calumet, Michigan, with Peterson’s 23-foot cabin cruiser in...Robinson, of the A. E. Seaman Mineral Museum, Michigan Technological University, also viewed the specimens...made a leisurely Other Articles In This Upper Michigan Series Some are sold out; others can be purchased |
