Locality type: | Mine |
Classification |
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Species: | Prehnite |
Formula: | Ca2Al2Si3O10(OH)2 |
Confirmation |
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Validity: | Believed Valid |
Associated Minerals Based on Photo Data: |
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Calcite | ⓘ1 photo of Prehnite associated with Calcite at this locality. |
Copper | ⓘ1 photo of Prehnite associated with Copper at this locality. |
Data |
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Mineral Data: | Click here to view Prehnite data |
Locality Data: | Click here to view Robbins Mine (West Vein Mine), Phoenix, Houghton Township, Keweenaw County, Michigan, USA |
Data Identifiers |
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Mindat Occurrence Record ID: | 507796 |
Long-form Identifier: | 1:3:507796:0 |
GUID (UUID V4): | 7f75c582-6576-459d-aa69-67b2b99f9617 |
Nearest other occurrences of Prehnite |
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0.8km (0.5 miles) | ⓘPhoenix Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA |
1.0km (0.6 miles) | ⓘEagle River (Babbitt) Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA |
1.6km (1.0 miles) | ⓘEagle River, Eagle River, Houghton Township, Keweenaw County, Michigan, USA |
1.7km (1.0 miles) | ⓘSt. Clair Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA |
1.7km (1.1 miles) | ⓘLake Superior Mine (Old Phoenix Fissure), Phoenix, Houghton Township, Keweenaw County, Michigan, USA |
2.4km (1.5 miles) | ⓘAvery shaft, Cliff Mine, Allouez Township, Keweenaw County, Michigan, USA |
2.5km (1.6 miles) | ⓘCliff Mine, Allouez Township, Keweenaw County, Michigan, USA |
2.6km (1.6 miles) | ⓘSouth Cliff Mine, Allouez Township, Keweenaw County, Michigan, USA |
2.8km (1.8 miles) | ⓘNorth Cliff Mine, Allouez Township, Keweenaw County, Michigan, USA |
3.3km (2.0 miles) | ⓘNorth American Mine, Allouez Township, Keweenaw County, Michigan, USA |
References |
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Reference Search (possible matching items) |
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| | 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...Probably the best arborescent silver from the Cliff mine, this specimen is 9.5 × 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...on earth (Bornhorst and Rose 1994). At the Cliff mine it thickens to more than 1,300 feet and remains...in the formation of tabular deposits of fissure vein copper in the thin underlying lava flows. Mineralization | | | Journal (issue) | copper in the Quincy mine ca. 1918. (Michigan Technological University Archives, Houghton) D e d ic ated...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 . | | | 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 |
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