Log In
Amygdaloid Mine, Eagle Harbor Township, Keweenaw County, Michigan, USAi
| Regional Level Types | |
|---|---|
| Amygdaloid Mine | Mine |
| Eagle Harbor Township | Township |
| Keweenaw County | County |
| Michigan | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
47° 25' 20'' North , 88° 6' 42'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Copper Harbor | 108 (2017) | 17.5km |
| Ahmeek | 146 (2017) | 25.5km |
| Copper City | 187 (2017) | 25.9km |
| Laurium | 1,941 (2017) | 32.4km |
| Calumet | 703 (2017) | 32.4km |
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 | 45km |
The Amygdaloid Mining Company worked six shafts on three fissure veins that included the Drexel and Connecticut mines. The company opened in 1860 and early returns looked favourable for copper and silver. In June 1862, a major fire destroyed almost all of the surface buildings. By June 1863, the mine site was rebuilt and produced around 110,000 pounds of copper. An 1865 Company Report mentions that around 3,600 tons of stamp rock was present and that three shafts (Denckla, Womrath, and Haddock) were being worked. Drifting was conducted on the Drexel and Oliver veins, and five winzes were sunk. While much work was conducted, very little copper was produced. By 1874, the company stopped mining and handed the workings over to tributors who worked the mines for another four years before leaving in 1878. Total copper production was recorded at 1,541,180 pounds
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
3 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Datolite Formula: CaB(SiO4)(OH) |
| ⓘ Native Copper Formula: Cu References: |
| ⓘ Natrolite Formula: Na2Al2Si3O10 · 2H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| Group 9 - Silicates | |||
| ⓘ | Datolite | 9.AJ.20 | CaB(SiO4)(OH) |
| ⓘ | Natrolite | 9.GA.05 | Na2Al2Si3O10 · 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Datolite | CaB(SiO4)(OH) |
| H | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| B | Boron | |
| B | ⓘ Datolite | CaB(SiO4)(OH) |
| O | Oxygen | |
| O | ⓘ Datolite | CaB(SiO4)(OH) |
| O | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Na | Sodium | |
| Na | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Al | Aluminium | |
| Al | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Si | Silicon | |
| Si | ⓘ Datolite | CaB(SiO4)(OH) |
| Si | ⓘ Natrolite | Na2Al2Si3O10 · 2H2O |
| Ca | Calcium | |
| Ca | ⓘ Datolite | CaB(SiO4)(OH) |
| Cu | Copper | |
| Cu | ⓘ Native Copper | Cu |
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
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
