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Chlorastrolite from
Medora Mine, Mandan, Grant Township, Keweenaw County, Michigan, USA


Locality type:Mine
Classification
Species:Pumpellyite-(Mg) var: Chlorastrolite
Formula:Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chlorastrolite data
Locality Data:Click here to view Medora Mine, Mandan, Grant Township, Keweenaw County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:416972
Long-form Identifier:1:3:416972:7
GUID (UUID V4):9f559ab2-3221-4840-a26e-d84615572961
Nearest other occurrences of Chlorastrolite
4.5km (2.8 miles) Iron City Mine (Empire Mine), Mosquito Mining District, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
6.8km (4.2 miles) Delaware Mine (Delaware Conglomerate Mine), Delaware, Grant Township, Keweenaw County, Michigan, USA
9.4km (5.8 miles) Waterbury Mine, Eagle Harbor, Keweenaw County, Michigan, USA
13.1km (8.2 miles) Central Exploration Mine, Central, Houghton Township, Keweenaw County, Michigan, USA
13.9km (8.7 miles) Northwestern Mine, Central, Houghton Township, Keweenaw County, Michigan, USA
14.1km (8.8 miles) Copper Falls, Eagle Harbor, Keweenaw County, Michigan, USA
14.5km (9.0 miles) Central Mine, Central, Houghton Township, Keweenaw County, Michigan, USA
19.9km (12.4 miles) St. Clair Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA
20.8km (12.9 miles) Phoenix Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA
23.8km (14.8 miles) Cliff Mine, Allouez Township, Keweenaw County, Michigan, USA
References
Reference Search (possible matching items)
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 • 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...our knowledge and enjoyment of this great owners, mine and quarry operators and science by collecting....which operate in many states are not as likely to grant permission to collect as the former locally owned... 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
Book (volume)
Dahlonega Co. and Rabum Co., and  the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...agate, (banded, various colors), jasper. BIBB COUNTY MACON:  at Holton Quarry, 7½ mi. NWagate;  N
Journal (article/letter/editorial)
minerals of Michigan’s Copper Country News from the Keweenaw Recent Mineral Finds in Michigan’s Copper Country... When one thinks of superb specimens from the Keweenaw, memories of arborescent groups of copper and...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
Book (volume)
600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods...gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason Cr.⎯fossils;
Book (volume)
600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods...gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason Cr.⎯fossils;
Book (edition)
feldspar quarries in pegmatite deposits, mines and mine dumps, and from "float" deposits, minerals loose...should always ask permission it may be un- or a mine dvmip. Cleanliness around a camp site and removal...central Indiana, near Cincinnati, and Dowagiac, Michigan. Few have been reported years, in recent perhaps...Lincoln Co. Todd's Branch, Mecklenberg Co. Portis mine, Franklin Co. Muddy Creek headwaters, McDowell...Ferry, Hall Co. Horshaw mine, Racooche Valley, White Co. 1866 Vs White County Daniel Light form, %
Book (edition)
Collector and the Tourist includes 1 SOUTH DAKOTA • MICHIGAN • ILLINOIS • IOWA WISCONSIN • OHIO • KANSAS •... 47 MICHIGAN ............. 63 WESTERN IOWA ............................ -47 THE KEWEENAW PENINSULA...47 Beaches .................................... Mine Dumps ............................ 63 .63 63 •47...ISLE ROYALE....................... .66 LOWER MICHIGAN .......... Crystals and Specimens Fossils.......of the great Midwest. Collectors may search the mine dumps, stream beds, quarries, hillsides, caves,
Book (edition)
MISSOURI ILLINOIS • NORTH DAKOTA • OHIO • MICHIGAN • NEBRASKA • IOWA WISCONSIN Digitized by...and the Tourist Field includes SOUTH DAKOTA • MICHIGAN • ILLINOIS • IOWA WISCONSIN • OHIO • KANSAS •...Cycad .-' _ :. Oelrichs Agate Beds Rose Quartz Mine Northern Hill Gems 24 8 Jasper 25 Golden Barite...40 North Dakota 43 Indiana . 45 Ohio 46 Michigan 50 Missouri 53 j- Kansas 5Q Iowa 60 -...matrix. Or you may visit the beach at Petoskey, Michigan, and find a stone glistening from the receding
Journal (issue)
large mass of native copper in the Quincy mine ca. 1918. (Michigan Technological University Archives, Houghton)...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 .
Report (volume)
Mathews, Johns Hopkins University, Baltimore. Michigan..........Mr. R. A. Smith, Lansing. Dr. A. C. Lane...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby
Book (volume)
5 = fii? i a j — » ya y _— ’* : i mine in. q)! Y eit iia -...of Mines, Mining and Geology; on the State of Michigan by Robert W. Kelley of the Department of Conservation;...Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken...operator of the Little Three Mine at Ramona, and Ralph R. Potter of the Himalaya Mine at Mesa Grande provided
Report (volume)
:............................................. Michigan.................................................See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities : Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20 S., R. 7 E.;...; Jefferson County, at Ely ton; Lee County, at Chewacla lime works"; St. Clair County, at Greensport;
Book (edition)
MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Basalt is the copper- and agate-bearing rock in the Michigan Upper Peninsula; underneath the whole region is...minerals. He will pick over stream beds, gravel pits, mine dumps, road cuts, and quarries. Some gems agate... and safety-toe shoes in an operating quarry or mine. They are prudent precautions against disaster in...property, even unfenced range, a deserted cabin, or a mine dump. Be ready to sign a waiver absolving the owner
Journal (issue)
of brightyellow crystals is from the Cozzo Disi mine in Casteltermini (Sicily), Italy, and stands 19.......38 Chalcedony beds in Southeast Arizona by Grant Curtis Tucson 2014 ..............................6-8—LA HABRA, CALIFORNIA: Annual show; North Orange County Gem & Mineral Society; Sonora High School; Upper...nocgms.com 7—DELTA, COLORADO: Annual show; Delta County Rock Wranglers; Heddles Recreation Center; 530...Annual show; North Idaho Mineral Club; Kootenai County Expo and Event Center; Kathleen and Government
Journal (issue)
e-mail: gemshowman@outlook.com 2-4—KALAMAZOO, MICHIGAN: Annual show; Kalamazoo Geological & Mineral Society;...Wholesale and retail show; Gem Faire Inc.; Sonoma County Fairgrounds; 1350 Bennett Valley Rd.; Fri. 12-6...Annual Show; Umpqua Gem & Mineral Club; Douglas County Fairgrounds; I-5 Exit 123; Sat. 9-5, Sun. 10-4;...PENNSYLVANIA: Show and sale; F M Minerals; Washington County Fairgrounds, 2151 N. Main St.; Sat. 10-6, Sun....show; Cuyuna Rock, Gem & Mineral Society; Crow Wing County Fairgrounds; 2000 SE 13th St.; Sat. 9-5, Sun. 10-4;
Journal (issue)
GEM & MINERAL SHOW - SPRING Holiday Inn - Orange County Airport, 2726 S. Grand Ave., SANTA ANA, CA 92705...PM Reader Letters IELD NOTES EDITORIAL the mine where we could oversee the valley and stream when...there?) Rock & Gem has been a favorite magazine of mine for years, so it’s a wonderful thing to have it...show; Roxy Ann Gem & Mineral; Olsrud Arena; Jackson County Fairgrounds; Sat. 9-5:30, Sun. 10-4:30; adults...Annual show; Dothan Gem & Mineral Club; Houstan County Farm Center; 1701 E. Cottonwood Rd.; Sat. 9-5,
Book
not just a picture book. Rather, it is a veritable mine of information, telling everything the collector...you If you plan to vIsIt an operating quarry or mine where a permll Is required make the necessary arrangements...LAKE BAILEY N I DELAWARE MINE DUMPS IOATOUTE CHLORASTROUTEI 2 AMYGDAlOID MINE DUMPS 3 AGATE HARBOR (AGATES...(AGATES THOMSONITE ON BEACH\ )l MUD VLAKE TO MANDAN MINE - HARD SURFACE Field drawing to locate a collecting...topographic map of the Delaware q uadrangle o f Keweenaw County, Michigan This ,s an example o f the more picturesque
Book
HfiRIN COUNTY FREE LIBRfiRY 311110G386652Q I V Russell P MacFal A COLOR TREASUF FOR COLLECTORS...it a veritable not just a picof informa- is mine tion, telling everything the collector needs to...to Hunting Locations ? i 9 GIVEN TO THE MARIN COUNTY LIBRARY BY MARI N L MTNF.RAT. SOCTETY DAVID...can use a mountaineering bag or a mili- quarry or mine where a permit tary bag; make it it should...they may be able to buy specimens. map of Keweenaw County. Mich- Part of the U.S. Geological Survey
Report (volume)
cientlfica Circular Classe classification Company, County Collections Committee Communications Comparative...Topog.------- Topographic, etc. Tp.__-.-__-._ Township BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1946...Abstracts nos. 5, 6. Bethlehem, Pa. Los Angeles County Museum: Publications nos. 4-7; Quarterly vol. 6...D. F. Michigan Academy of Science, Arts and Letters, Papers vol. 30. Ann Arbor, Mich. Michigan Geological...Reports 12, 13; Publications 42-44. Lansing, Mich. .Michigan University Museum of Paleontology Contributions
Report (volume)
geology and mining industry of Leadville, Lake County, Colorado, by S. F. Emmons, pp. 201-290, pis. xliv-xlv...pis. Vi-xix. The Penokee iron-bearing series of Michigan and Wisconsin, by Koland Duer Irving and Charles...report on the Marquette iron-bearing district of Michigan, by Charles Richard Van Hise and William Shirley...and hydrography Continued. The mines of Ouster County, Colorado, by Samuel Franklin Emmons, pp. 405-472...The age of the Franklin white limestone of Sussex County, New Jersey, by John Eliot Wolff and Alfred Hulse
Report (volume)
cientifica Circular Classe classification Company, County Collections Committee Communications Comparative...Tijdschrift Topog._-_._- Topographic, etc. Tp__________ Township Tps.-_-_--__ Townships Trans______ Transactions...BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1929-39 Michigan Academy of Science, Arts, and Letters: Guidebooks...7-9; Papers vols. 9-11, 13-24. Ann Arbor, Mich. Michigan College of Mining and Technology Bulletins new...ser., vols. 6-12 (parts). Houghton, Mich. ' . Michigan Department of Conservation, Geological Survey
Book (edition)
Morocco; (center, left) wulfenite, San Francisco mine, Sonora, Mexico; (center) ameihyst, Veracruz, Mexico;...rnodochrosite, N’Chwaning mine, South Africa; (lower left, center) wulfenite, Red Cloud mine, Arizona; (lower...Lincoln. Encyclopedia of minerals Sagiiache County Pu blic Library Saguache , Colorado DEMCO For...Photo Editor: Wendell E. Wilson Library Saguache County Public Saguache, Colorado VAN NOSTRAND REINHOLD...Michael P. Cooper Mark Rogers Marshall Sussman Michigan Technological University Marcelle Weber PHOTO
Book (edition)
Morocco; (center, left) wulfen ite San Francisco mine, Sonora, Mexico; (center) amethyst, Veracruz, Mexico;...Mountains, Utah; (lower le ft) rhodochrosite, N'Chwaning mine, Sou th A frica; {lower left, center) wulfenite...Willard Lincoln. Encyclopedia of minerals ~~cbe County Public Library Saguache, Colorado OEMCO For Refere... Cooper MR Mark Rogers MS Marshall Sussman MT Michigan Technological University MW = Marcelle Weber ...in sandstone at the Fuemrol No. 2 mine, Temple Mountain, Emery County, Utah; also sparsely disseminated
 
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