| Locality type: | Point |
| Classification |
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| Species: | Laumontite |
| Formula: | CaAl2Si4O12 · 4H2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Laumontite data |
| Locality Data: | Click here to view Hays Point, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 416488 |
| Long-form Identifier: | 1:3:416488:3 |
| GUID (UUID V4): | f2eecbe0-5a2c-484e-b58e-0746b8889987 |
| Nearest other occurrences of Laumontite |
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| 2.2km (1.4 miles) | ⓘManganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA |
| 3.2km (2.0 miles) | ⓘClark Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA |
| 4.1km (2.6 miles) | ⓘMontreal Mine, Mosquito Mining District, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA |
| 4.4km (2.7 miles) | ⓘHorseshoe Harbor, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA |
| 5.0km (3.1 miles) | ⓘLakeshore traps, Eagle Harbor, Keweenaw County, Michigan, USA |
| 5.7km (3.5 miles) | ⓘNew York and Michigan Exploration, Grant Township, Keweenaw County, Michigan, USA |
| 6.8km (4.2 miles) | ⓘAetna Exploration Copper Mine, Grant Township, Keweenaw County, Michigan, USA |
| 7.1km (4.4 miles) | ⓘVulcan Exploration Copper Mine, Grant Township, Keweenaw County, Michigan, USA |
| 7.1km (4.4 miles) | ⓘLac La Belle exploration, Lac La Belle, Grant Township, Keweenaw County, Michigan, USA |
| 8.6km (5.4 miles) | ⓘDan's Point, Eagle Harbor, Keweenaw County, Michigan, USA |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | COPPER-BEARING FISSURE VEINS Keweenaw County, Michigan Downloaded by [University of Delaware] at 05:05...05:05 09 June 2012 Lake Superior Native Copper District Fifteenth in a series of articles on the mines...Michigan’s Copper Country 298 ROCKS & MINERALS Figure 1. Considered by some to be the finest copper specimen...specimen in the world, this 6 × 8-cm crystallized copper specimen came from the Central mine and was in the...and the piece is now on display in the special Copper Country collection case; Jeff Scovil photo. Downloaded |  | | 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 |  | | Journal (issue) | | MICHIGAN COPPER! The Mineralogical Record JANUARY-FEBRUARY 2023 ? VOLUME 54 ? NUMBER 1 ? $40 ... KRISTALLE Est.1971 Laguna Beach, California, USA • Tel: +1 949 494 5155 • Email: info@kristalle.com...gemgypsy@bellsouth.net JANUARY–FEBRUARY 2023 Articles Copper Country II Introduction..............................................3 by W. E. Wilson The Keweenaw County Fissure Mines.................................13 by C. J. Stefano The Cliff Mine, Keweenaw County, Michigan...................................... |  | | Report (issue) | | Michigan’s Copper Country Ellis W. Courter Contribution to Michigan Geology 92 01 Table of Contents.......................................... 2 The Keweenaw Peninsula ............................................................ 6 Europeans Come to the Copper Country .........................................Ontonagon Copper Boulder ............................................................... 18 The Copper Rush...Michigan’s Copper Country – CMG 92 01 - page 1 of 144 Preface Few people realize that Michigan's copper had |  | | Journal (article/letter/editorial) | | vapor-saturated solidus terminates at a critical end-point at 9-7 kb. Melting and subsolidus relationships...composition were presented by Hariya & Kennedy (1968), Hays (1967), and Boyd (1964). Pertinent subsolidus studies...(1962), Merrin (1962), and Winkler &Nitsch(1962). Hays(1967) investigated subsolidus equilibria at high...011 001 — 19-34 1. Grossularite, Bowling Alley Point, New South Wales. Analyst: T. H. Smith (see Deer...the crystals illustrated by Stewart (1967), and Hays (pers. comm., 1969) has also synthesized corundum |
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