 | | Journal (article/letter/editorial) | | TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net All mineral photography...Mineralogy of the St. Louis Mine Houghton County, Michigan Twentieth in a series of articles on the mines...about 1.3 miles east of the village of Laurium, Michigan. This little-known locality is seldom visited...Tom Rosemeyer, a native of Upper Michigan, is a graduate of Michigan Technological University, He now...Lake Superior copper district in Houghton and Keweenaw counties. The copper-bearing Portage Lake Volcanics |  | | Journal (article/letter/editorial) | | Lode Houghton County, Michigan TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter...copper-bearing amygdaloidal lode in Houghton County, Michigan. These unusual agates, which range in size from...Lake Superior copper district in Houghton and Keweenaw counties. The copper-bearing Portage Lake Volcanics...Tom Rosemeyer, a native of Upper Michigan, is a graduate of Michigan Technological University. He now...copper that has selectively replaced certain chalcedony bands within the agate structure and formed a |  | | Journal (article/letter/editorial) | | TOM ROSEMEYER 57647 Caledonia Street Calumet, Michigan 49913 datolite@charter.net Up Twenty-first in...from Lake Superior KEWEENAW COUNTY, MICHIGAN Tom Rosemeyer is a native of Upper Michigan and a graduate...graduate of Michigan Technological University. He now spends a good part of the year in the Copper Country researching...scenic shoreline of Lake Superior at Esery Park, Keweenaw County. Larry Maltby photo (July 2013). Figure...with the location of the agates recovered off Keweenaw Point in Lake Superior; prepared by William Besse |  | | Journal (article/letter/editorial) | | as euhedral crystals associated with analcime, chalcedony, and opaline silica in amygdules. Anorthoclase...amygdules are analcime, calcite, silica phases (chalcedony and opaline silica, and possibly volcanic glass)...mostly filling amygdules associated with calcite, chalcedony, amorphous (opaline) silica, and an unidentified...mostly arranged zonally within the amygdules, with chalcedony in the center, followed outward by mixed opaline...as analcime, calcite, opaline silica and 9 chalcedony (Figs. 5a-j). EPMA analyses showed that it consists |  | | Journal (article/letter/editorial) | | Field Trip to the Keweenaw Rift: Lava Flows and Cop per by William I. R o s e , Michigan Technological University...Development, Michigan Technological University, Houghton, Ml 49931. Video Field Trip to the Keweenaw Rift is...geologically fascinating areas, Michigan's Keweenaw Peninsula and neighboring Isle Royale. The Ke weenaw...utilized by native Americans. By the late 1800s the Keweenaw was a thriving mining dis trict. Today the scenery...major tourist attractions. The rocks of the Keweenaw Peninsula and Isle Royale are the result of a continental |  | | Report (issue) | | VOLCANICS (MIDDLE KEWEENAWAN) ON ISLE ROYALE, MICHIGAN Prepared in cooperation with the National Park...Isle Royale, Michigan By N. KING HUBER GEOLOGY OF ISLE ROYALE NATIONAL PARK, MICHIGAN GEOLOGICAL SURVEY...-···-·--· 2 The Portage Lake Volcanics on the Keweenaw Peninsula__ 3 The Portage Lake Volcanics on Isle...-Correlation between Isle Royale and the Keweenaw Peninsula ----------------------------------------...middle and upper Keweenawan rocks of northern Michigan and adjacent parts of Wisconsin-------------- |  | | Report (volume) | | 64-66 Supt.of Docs. No.: 119.3:1309 1. Geology-Michigan-Isle Royale National Park-Guide-books. I. Title...copper mining by Europeans was established on Keweenaw Peninsula and had been attempted on Isle Royale (fig...Foster and Whitney is that Isle Royale and the Keweenaw Peninsula may be regarded as geologic counterparts...may be regarded as infinitely less valuable than Keweenaw Point." The first period of mining activity on...by Alfred C. Lane of the Geological Survey of Michigan. His geologic map and report were published in |  | | Journal (article/letter/editorial) | | minerals in amygdules include calcite, quartz, chalcedony, chlorite, and zeolites. Regionally, other minerals...Volcanics. Also found in Upper Michigan, particularly in the Keweenaw Peninsula and on Isle Royale, are amygdules...chlorastrolite (a variety of pumpellyite) known as Michigan greenstones, Michigan’s state gemstone. Furthermore...the important modes of copper formation in the Keweenaw deposits is as amygdules. These deposits formed...the village of Kearsarge, in Houghton County, Michigan. The specimen measures 11 x 7 x 7 cm. A. E. Seaman |  | | Journal (article/letter/editorial) | | preserved them as choice relics, and when in upper Michigan, or down in Tennessee, we pick up a beautiful...widely distributed. Not far from Sault St. Marie, Michigan, but on the Canadian side, there is a large out...it, thus forming a solid rock. In some of our Michigan streams, the process of erosion has bared boulder...Washington and Oregon, that the gem forms of chalcedony have been found in profusion as arrowpoints....suspended from the watch-chain or neck lace. Michigan is one of the states where little material of |  | | Report (issue) | | University University Michigan Townsend Drive Drive 1400Townsend 1400 Houghton, Houghton, Michigan Michigan49931-1...field trip trip to to the T. J. the Keweenaw Peninsula, Michigan: Institute on Lake Superior Geology...Geology Proceedings, Keweenaw Peninsula, Michigan: Institute on Lake Superior Geology Proceedings, 40th 40thAnnual..."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 (volume) | | GA side of the SC borderSavannah River agate, chalcedony, Quartz gemstone, silicified oolite. CARROLL...Hwy.agate; (b) quarry on W side of rd.agate, chalcedony, chert, opal; area of state fish hatchery on...near the National Cemeterybanded agate, mossy chalcedony, Kyanite, jasper. POWDER SPRINGS, S 2 mi., outcrop...20 to the Rice Springs Farms, areabotryoidal chalcedony, geodes, Rose Quartz, etc.; at the Ledbetter...pegmatiteKyanite crystals; W 2 mi., areabanded agate, chalcedony, jasper; N, in U-shaped belt about 30 mi. long |  | | Journal (article/letter/editorial) | | Copper sulphides are found in the interstices of chalcedony often cementing the marginal parts of spherule...position with respect to the concentric bands of chalcedony. The idiomorphic appearance of native copper...summarized in many papers [1–19]. Agate is a banded chalcedony, which can be intergrown or intercalated with...cristobalite-chalcedony zone, following a thin first outer zone of an oval-shaped chalcedony. Native copper...Wolverine Mine, Wolverine, Houghton County, Michigan (USA) [19,21]. These unusual agates, which range |  | | Journal (article/letter/editorial) | | deposits in the world are located on the Keweenaw Peninsula of Michigan. Roughly 5 million tons of refined...located along a 100-km-long zone within 3 km of the Keweenaw fault (Butler and Burbank, 1929; Broderick et...calcite, quartz, epidote, chlorite, prehnite, chalcedony, and zeolites. This alteration paragenesis is...are similar to the ore-forming process in the Keweenaw district. The age of the Portage Lake basalt and...included among the 750 (!) papers published on the Keweenaw district (White, 1968), and there is general agreement |  | | Report (issue) | | 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...of Natural Resources, P.O. Box 30028, Lansing, Michigan 48909 On deposf-t in public libraries, state |  | | Book (edition) | | central Indiana, near Cincinnati, and Dowagiac, Michigan. Few have been reported years, in recent perhaps...contributes the Sweetwater moss agates, Specimen Hill chalcedony and Eden Valley petrified wood, which owe their...— —cream and — — wave Calomel — wave —orange Chalcedony: Tampa Wasco — waves — wave— wove by N.J. —orange...County Chalcedony Apatite Clifton, Greenlee County Quartz crystals Globe, Gila County Chalcedony Chrysocolla...Chrysocolla Dioptase (Bon Ton Mine) Chalcedony, chrysoprase (Old Dominion Mine) Malachite Chrysocolla |  | | Journal (article/letter/editorial) | | SANDSTONES NEAR L'ANSE, MICHIGAN By K. SPIROFF Department of Geological Engineering, Michigan College of M i n...Technology. Houghton, Michigan In Houghton and Baraga Counties, in Michigan's Upper Peninsula, are various isolated...abundance of hematite) with epidote, chlorite, and chalcedony; dense basic basalts whose texture is completely...southwest. Summary The sandstones-near L'Anse, Michigan, are of two different ages. The lack of felsite...not from the copper-bearing flows of the Keweenaw Peninsula. OBITUARY NOTICES It is with sorrow that |  | | Report (issue) | | sedimentary rocks in Minnesota, Wisconsin, and Michigan were examined, sampled, and described with the...Wisconsin northeastward throughout the Keweenaw Peninsula in Michigan, and on Isle Royale in Lake Superior...deposited. Two sites on the north shore of the Keweenaw Peninsula were examined, both areas that typify the...northeastward to near Calumet on the Keweenaw Peninsula in Michigan, more or less parallel to the Lake...Porcupine KANSAS AND NEBRASKA WISCONSIN AND MICHIGAN IOWA AND MINNESOTA Chequamegon Sandstone S&f |  | | Journal (article/letter/editorial) | | February 2015 Figure 2. A generalized map of the Michigan copper district showing the location of new finds...localities are arranged geographically, starting with Keweenaw Point and continuing in a southwestern direction...end of the district. Keweenaw Point, Keweenaw County The waters off Keweenaw Point have drawn much attention...since the publication of the first “News from the Keweenaw” article that described the occurrence of yellow... To date, he has discovered two areas between Keweenaw Point and Manitou Island where datolite occurs |  | | Journal (issue) | | and even stone of gei:1 quality, such as agate, chalcedony, basanite, and rock crystal had been utilized...read before the Section of Anthropology of the Michigan Academy of Science, but as 1 Dustin, Fred, MAttridls...Dr. Wilbert B. Hinsdale, of the University of Michigan, suggested that a paper be written on arrowpoints...for the great distribution of native copper of Michigan, cat1inite f ram Minnesota, and perhaps other...offering to exchange arrowpoints of characteristic Michigan minerals for similar artifacts from the several |  | | Journal (article/letter/editorial) | | Copper-bearing Amygdaloidal Lode Houghton and Keweenaw Counties, Michigan TOM ROSEMEYER PO Box 369, 506 Pine Street...the secondmost-productive lode discovered in the Michigan copper district. In the heyday of mining it became...the A. E. Seaman Mineral Museum on the campus of Michigan Technological University will let you relive the...Tom Rosemeyer is a native of Upper Michigan and a graduate of Michigan Technological University in Houghton...researches the mineralogy and mining history of the Michigan copper district and the San Juan Mountains, Colorado |  | | Journal (issue) | | Hill Ordovician fossils from Michigan’s Upper Peninsula, along with a number of specimens. The examples...com/minicourses/Activity_Search/intro-to-lapidary/10512 Keweenaw Mineral Days 2018 The event this year is being...E. Seaman Mineral Museum in collaboration with Keweenaw Gem and Gift, Inc. this event provides legal surface...collecting on rock piles of former mines in the Keweenaw Peninsula. Access to the rock piles is becoming more...If you have always wanted to rockhound in the Keweenaw, don’t put if off too much longer. Free admission |  | | Book (volume) | | western Illinois⎯geodes (lined with botryoidal chalcedony, occasionally with pale Amethysts, or Quartz...deposits⎯agate, jasper, geodes (containing blue gray chalcedony); d (a) S of the Keokuk bridge, in stream banks...(see map next page) ⎯geodes (with blue and pink chalcedony); f 4 mi. E on Hwy. 96, S on Pontoosue Rd. is...either brown Calcite; or Pyrite on chalcedony, Sphalerite on chalcedony or Calcite, Quartz. 151 Illinois...Limonite, Kaolinite, Celestite, Fluorite and chalcedony; d Garner Mine Ridge, Sec. 28, T. 4 N, R. 2 W |  | | Book (volume) | | western Illinois⎯geodes (lined with botryoidal chalcedony, occasionally with pale Amethysts, or Quartz...deposits⎯agate, jasper, geodes (containing blue gray chalcedony); d (a) S of the Keokuk bridge, in stream banks...(see map next page) ⎯geodes (with blue and pink chalcedony); f 4 mi. E on Hwy. 96, S on Pontoosue Rd. is...either brown Calcite; or Pyrite on chalcedony, Sphalerite on chalcedony or Calcite, Quartz. 151 Illinois...Limonite, Kaolinite, Celestite, Fluorite and chalcedony; d Garner Mine Ridge, Sec. 28, T. 4 N, R. 2 W |  | | Book | | 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 |  | | Book | | Lakes States Wisconsin, Indiana, Illinois, Michigan, by June Culp Zeitner $5.95 Gem Guides Book... 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...and Indiana are bordered in part by Lake Michigan, and Ohio hugs the edge of Lake Erie. These states |
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Wolverine No. 2 shaft, Wolverine Mine, Wolverine, Calumet Township, Houghton County, Michigan, USA