 | | Journal (issue) |
| large mass of native copper in the Quincy mine ca. 1918. (Michigan Technological University Archives, Houghton)...Donald Pearce (1941-1989) The āCopper Kingā 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 . |
 | | Report (issue) |
| University University Michigan Townsend Drive Drive 1400Townsend 1400 Houghton, Houghton, Michigan Michigan49931-1...J. the Keweenaw Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, Keweenaw Peninsula...Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, 40th 40thAnnual AnnualMeeting, Meeting..."Field Guide to the Geology Geology of the the Keweenaw Keweenaw Annual Institute Institute on on Lake Lake...Lake Superior Superior Geology Peninsula, Michigan" Michigan" (Bornhorst (Bornhorst and others, 1983) for |
 | | Book |
| Mineralogy of Michigan by E. W. Heinrich updated and revised ā¢ by George W. Robinson M By E W~ Hellnr]ch...Museum Michigan Technological University Houghton, Michigan 49931 2004 Ā© 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 |
 | | Journal (article/letter/editorial) |
| 08 January 2015 The Occurrence of Porcelaneous Datolite in MichiganĆs Lake Superior Copper District Figure...beautiful yellow datolite nodule, 0.9 x 1.1 inches, recovered from the Hancock mine dump by John Perona...the bowels of a Keweenaw copper mine to the icy depths of Lake Superior, serious datolite collectors have...descending a steep 2,000-foot-deep mine shaft in the dead of a Keweenaw winter with only mud and ice for...over heels into the black depths of an abandoned mine. All of this effort was expended on clandestine |
 | | Journal (article/letter/editorial) |
| MICROMOUNTING AT THE KEWEENAW PENINSULA, MICHIGAN By PAUL B. MOORE and RICHARD M. 6EGER Depr. of Geolophysical...INTRODUCTION The Keweenaw Feninsula is well-known for its fine specimens of copper, datolite, calcite xls...collectors with limited time, may we suggest the Hancock Mine (on Ingot St., Hancock). The dump looks terrible...chlorite minerals are the best found anywhere in the Keweenaw Peninsula. PUMPELLYITE (6Ca0.3Al 2 0 3 .7Si0 2...due to the parallel growth of xls. At the Hancock Mine, Hancock, it occurs upon xls of epidote and quartz |
 | | Journal (article/letter/editorial) |
| 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Keweenaw Figure 1. A delicate group...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 Michiganās Copper Country T he Michigan Copper Country, also known as the Lake Superior...scenic Keweenaw Peninsula, which juts out into Lake Superior at the western end of Upper Michigan. The |
 | | Report (issue) |
| 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 |
 | | Journal (issue) |
| MICHIGAN COPPER! The Mineralogical Record JANUARY-FEBRUARY 2023 ? VOLUME 54 ? NUMBER 1 ? $40 ... KRISTALLE Est.1971 Laguna Beach, California, USA ā¢ Tel: +1 949 494 5155 ā¢ Email: info@kristalle.com.......................3 by W. E. Wilson The Keweenaw County Fissure Mines.......................................13 by C. J. Stefano The Cliff Mine, Keweenaw County, Michigan................................... Stefano & P. Persson The Central Mine, Keweenaw County, Michigan................................... |
 | | Journal (article/letter/editorial) |
| articles on the Michigan Copper Country by Tom Rosemeyer (including the one in this issue), datolite has been...the topic of this Connoisseurās 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 āto divide.ā Datolite is a calcium |
 | | Journal (article/letter/editorial) |
| 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...starting with Keweenaw Point and continuing in a southwestern direction to the White Pine mine at the southern |
 | | Journal (article/letter/editorial) |
| Copper-bearing Amygdaloidal Lode Houghton and Keweenaw Counties, Michigan TOM ROSEMEYER PO Box 369, 506 Pine Street...5.5 Ć 10.0 cm, attributed to the South Kearsarge mine. Authorās specimen, Terry Huizing photo. 276 ROCKS...the secondmost-productive lode discovered in the Michigan copper district. In the heyday of mining it became...accessory minerals including analcime, calcite, datolite, epidote, microcline, natrolite, prehnite, and...miners until 1967 when all mining ceased. Many of the mine dumps have disappeared through the years because |
 | | Book |
| 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 |
 | | Journal (article/letter/editorial) |
| Calumet, Michigan 49913 datolite@charter.net Unearthed from a Pleistocene Grave In Michiganās Keweenaw Peninsula...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...represents a vestige of the glacial history of the Keweenaw Peninsula. The recovered cobbles and boulders...construction of Figure 2. Map showing Calumet, Michigan, where the glaciated copperbearing Calumet and |
 | | Journal (article/letter/editorial) |
| 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. Michiganās Copper Country datolite has been collected, prized, fashioned, and proudly...of the Keweenaw Peninsulaās datolite by diving into this article on the occurrence of datolite and the...never-before-published collecting history of major datolite localities and collecting personalities. Stanley |
 | | Book |
| Clarence J. Monette 942 Ninth Street Lake Linden, Michigan, 49945 All Rights Reserved ISBN: 0-942363-04-3...Printing & Graphic Services, Inc. of Calumet, Michigan _ ee AUTHOR'S As the title of this. NOTE...places in the four counties of Baraga, Houghton Keweenaw and Ontonagon are listed, as this is but a small...Monette Abbaye -------------------7--7 Adams. Township .---~------7--------Agate Harbor ----------77...Alberta ee ee eae 10 10 10 11 11 r rrr cr-7 Allouez -----------rrr c Alston --------------ccrc 77 Arnheim |
 | | Journal (article/letter/editorial) |
| COPPER-BEARING FISSURE VEINS Keweenaw County, Michigan Downloaded by [University of Delaware] at 05:05...crystallized copper specimen came from the Central mine and was in the collection of Donald C. Gabriel....exploration 2. Cliff mine 3. Phoenix group of mines 4. Central mine 5. Northwestern mine 6. Central exploration...Resolute mine 9. Hard Rock fissure 10. Iron City (Empire) mine 11. Cape mine 12. Copper Falls mine 13. Clark...Clark mine 14. Point prospect 15. Mendota mine 16. Gull Rock fissure and Laker pocket Figure 3. A 1900 |
 | | Journal (article/letter/editorial) |
| News from the Keweenaw Downloaded by [Florida State University] at 18:43 12 November 2014 Part 3āRecent...years have passed since the last āNews from the Keweenawā; this article updates new finds to the spring...Tom Rosemeyer is a native of Upper Michigan and a graduate of Michigan Technological University in Houghton...year. During the last four years, the crushing of mine dumps (poor-rock piles) for road repairs and construction...construction in the Keweenaw. However, extensive logging operations, primarily in Keweenaw County, have increased |
 | | Journal (article/letter/editorial) |
| Discovery of an Exceptional Silver Vein in Michiganās Keweenaw Peninsula TOM ROSEMEYER Figure 1. The best silver/copper...2017). 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Twenty-sixth in a series of...vein 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...secTom Rosemeyer, a native of Upper Michigan, is a graduate of Michigan Technological University in Houghton |
 | | Journal (issue) |
| Menlo Park, CA Donald R. Peacor University of Michigan Ann Arbor, Ml George W. Robinson Natl. Museums...R. Kampf Natural History Museum of Los Angeles County Arthur Roe Tucson, AZ Abraham Rosenzweig University...Behnke Famous mineral localities: the Corrego Frio mine and vicinity, Minas Gerais, Brazil ...............Topaz-Mineral Exploration (1605 Hillcrest, Grand Haven, Michigan 49417) wishes to announce that he is now stocking...Person-otherāOther persons such as miners, field assistants, mine managers, etc. Place āUsed when a mineral is named |
 | | Journal (article/letter/editorial) |
| Michiganās Keweenaw Peninsula TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter...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 |
 | | Journal (article/letter/editorial) |
| recovered from a large vug in the fissure vein of the Cliff mine; the largest crystal is 2 cm across. The specimen...Probably the best arborescent silver from the Cliff mine, this specimen is 9.5 Ć 10.5 cm and was originally...Jaszczak photo. Figure 18. This calcite from the Cliff mine is 3.6 cm long and perched on a matrix of spongy...lava on earth (Bornhorst and Rose 1994). At the Cliff mine it thickens to more than 1,300 feet and remains...some of the veins (Butler and Burbank 1929). Cliff Mine After the failed 1844 mining venture at the Hays |
 | | Book (volume) |
| Dahlonega Co. and Rabum Co., and ļ the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmļ¾jasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. lineļ¾rock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1Ā½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatļ¾jasper. CARTERSVILLE:...ļ¾agate, (banded, various colors), jasper. BIBB COUNTY MACON: ļ at Holton Quarry, 7Ā½ mi. NWļ¾agate; ļ N |
 | | Journal (article/letter/editorial) |
| attributed to the Owl Creek fissure of the Copper Falls mine, this complex 3.2-cm crystal is perched on a matrix...3rd level of the Gribble vein in the Copper Falls mine. Of all the copper specimens recovered from the...calcite crystals recovered from the Copper Falls mine in the early days of mining. The sharp, limpid 4...recovered in the Copper Country in recent times. On the mine surface, beautiful microcrystals of analcime and...Petherick mine workings along the Copper Falls fissure. 320 ROCKS & MINERALS Clark Mine The Clark mine, about |
 | | Journal (article/letter/editorial) |
| Calumet, Michigan 49913 datolite@charter.net An UNUSUAL Glacial Silver Find In Michiganās Keweenaw Peninsula... In Michigan this took place during multiple periods of continental glaciation that the Keweenaw Peninsula...masses of float copper have been found in the Keweenaw Peninsula dating back thousands of years to the...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 |
 | | Book (volume) |
| 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravelsāÆagate, jasper, rare...āÆagate, jasper; d RR siding of ClayāÆagate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area depositsāÆSiderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...depositsāÆSiderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mineāÆpyritized gastropods...gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason Cr.āÆfossils; |
Cliff Mine, Allouez Township, Keweenaw County, Michigan, USA