| Locality type: | Fissure |
| 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 Mass Fissure, Ahmeek Mine, Ahmeek, Allouez Township, Keweenaw County, Michigan, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 399246 |
| Long-form Identifier: | 1:3:399246:3 |
| GUID (UUID V4): | fcb7d89d-432a-4eb2-8f07-1ae04ab8476a |
| Nearest other occurrences of Laumontite |
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| 1.0km (0.6 miles) | ⓘArsenide Fissure, Ahmeek Mine, Ahmeek, Allouez Township, Keweenaw County, Michigan, USA |
| 2.3km (1.4 miles) | ⓘMohawk Mine, Mohawk, Allouez Township, Keweenaw County, Michigan, USA |
| 5.5km (3.4 miles) | ⓘCentennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA |
| 5.5km (3.4 miles) | ⓘNo. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA |
| 6.6km (4.1 miles) | ⓘTamarack Junior Mine (Tamarack Jr. Mine), Centennial Heights, Calumet Township, Houghton County, Michigan, USA |
| 7.2km (4.5 miles) | ⓘSt. Louis Mine Exploration, Schoolcraft Township, Houghton County, Michigan, USA |
| 8.1km (5.0 miles) | ⓘCalumet & Hecla Mine, Calumet, Calumet Township, Houghton County, Michigan, USA |
| 8.6km (5.3 miles) | ⓘTamarack, Osceola Township, Houghton County, Michigan, USA |
| 9.3km (5.8 miles) | ⓘNorth American Mine, Allouez Township, Keweenaw County, Michigan, USA |
| 9.3km (5.8 miles) | ⓘSeven Mile Point, Allouez Township, Keweenaw County, Michigan, USA |
| References |
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| Reference Search (possible matching items) |
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 | 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) | | active copper nines, -..- roughton and Keweenaw Counties, Michigan H. R. Cornwall, J. J. Runner, A. A....bodies ................. 10 Central Exploration fissure mine, 12 Introduction................ + (- ; ...... 33 The Houghton conglomerate *>re body, Allouez No* 3* shaft.* *«* -.» » .*-* *» » * » » * Introduction...copper*«...._................,.. 26 ->- Quincy mine ,..........*.......*................... Introduction............^.................... 32 Isle Royale mine ................................... 3U ; *" 30 |  | | Journal (article/letter/editorial) | | Copper-bearing Amygdaloidal Lode Houghton and Keweenaw Counties, Michigan TOM ROSEMEYER PO Box 369, 506 Pine Street...5.5 × 10.0 cm, attributed to the South Kearsarge mine. Author’s specimen, Terry Huizing photo. 276 ROCKS...the secondmost-productive lode discovered in the Michigan copper district. In the heyday of mining it became...miners until 1967 when all mining ceased. Many of the mine dumps have disappeared through the years because...only massive concrete foundations mark the famous mine sites. Not all is lost, though. A trip to the A |  | | Journal (issue) | | iners with a large mass of native copper in the Quincy mine ca. 1918. (Michigan Technological University...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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