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Isle Royal No. 1 shaft, Isle Royal Mines, Houghton, Houghton County, Michigan, USAi
| Regional Level Types | |
|---|---|
| Isle Royal No. 1 shaft | Shaft (Abandoned) |
| Isle Royal Mines | - not defined - |
| Houghton | City |
| Houghton County | County |
| Michigan | State |
| USA | Country |
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Latitude & Longitude (WGS84):
47° 6' 47'' North , 88° 33' 56'' West
Latitude & Longitude (decimal):
Type:
Shaft (Abandoned) - last checked 2020
Deposit first discovered:
1852
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Houghton | 7,970 (2017) | 1.0km |
| Hancock | 4,555 (2017) | 1.9km |
| Dollar Bay | 1,082 (2017) | 4.2km |
| South Range | 746 (2017) | 7.6km |
| Hubbell | 946 (2017) | 12.3km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Copper Country Rock and Mineral Club | Dollar Bay, Michigan | 4km |
The northernmost shaft of the Isle Royale Mine ( https://www.mindat.org/loc-3845.html ) and one of the company’s earliest workings. The site contains small poor rock piles near the corner of Sharon and Portage Avenues where some copper and silver can be found. Exposed near the site is a mineralized outcrop of the Isle Royale Lode that contains two oxidized zones where fine microcrystals of Malachite and Azurite can be found. The Isle Royale Lode, where this shaft was located, was said to be one of the better locations for silver on the Keweenaw Peninsula.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
10 valid minerals.
Detailed Mineral List:
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 |
| ⓘ Calcite Formula: CaCO3 References: |
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 Description: Chrysocolla was found as light, turquoise blue coatings on masses of native copper collected from a heavily oxidized ‘mud pocket’ at the Malachite/Azurite locality in April 2020. The Chrysocolla was obscured by a thick layer of crumbly Malachite References: |
| ⓘ Cuprite Formula: Cu2O |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 Habit: Rings Description: Fine microcrystals are collected from two oxidized zones of the Isle Royale Lode at a small surface working near the #1 Shaft.
|
| ⓘ Native Copper Formula: Cu References: |
| ⓘ Native Silver Formula: Ag References: |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 References: |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Tenorite Formula: CuO Description: Black dendritic coatings on fracture surfaces near oxidized zones at the Malachite/Azurite locality. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| ⓘ | Native Silver | 1.AA.05 | Ag |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cuprite | 4.AA.10 | Cu2O |
| ⓘ | Tenorite | 4.AB.10 | CuO |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| C | Carbon | |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Cuprite | Cu2O |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Tenorite | CuO |
| Al | Aluminium | |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Cuprite | Cu2O |
| Cu | ⓘ Native Copper | Cu |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | ⓘ Tenorite | CuO |
| Ag | Silver | |
| Ag | ⓘ Native Silver | Ag |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Mid-continent DomainDomain
- Mid-continent RiftNarrow Rift
USA
- Michigan
- Keweenaw PeninsulaPeninsula
- Midcontinent RiftGeologic Province
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Isle Royal No. 1 shaft, Isle Royal Mines, Houghton, Houghton County, Michigan, USA