Franklin Jr. Mine (Albany & Boston; Peninsula), Boston, Franklin Township, Houghton County, Michigan, USAi
| Regional Level Types | |
|---|---|
| Franklin Jr. Mine (Albany & Boston; Peninsula) | Mine |
| Boston | Unincorporated Community |
| Franklin Township | Township |
| Houghton County | County |
| Michigan | State |
| USA | Country |
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Latitude & Longitude (WGS84):
47° 10' 49'' North , 88° 31' 31'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Dollar Bay | 1,082 (2017) | 6.8km |
| Hancock | 4,555 (2017) | 7.3km |
| Houghton | 7,970 (2017) | 7.3km |
| Hubbell | 946 (2017) | 7.3km |
| Laurium | 1,941 (2017) | 8.9km |
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 | 7km |
Introduction
An underground copper mine consisting of five shafts: four in the Pewabic Lode and one into the Allouez Conglomerate.
History
With the exhaustion of its mineral reserves on Quincy Hill, the Franklin Mining Company purchased the old Peninsula Mining Company lands (formerly the Albany & Boston) three miles to the north and renamed it the Franklin Jr. Mine in 1895. Work was focused solely on the northern extension of the Pewabic Lode and four shafts were driven. By 1900, it was determined that the original Albany & Boston shaft, which was driven into conglomerate, had more potential so the company enlarged the shaft to become its primary production shaft. Operations continued until 1920, when the mine was closed. Exploration work was done between 1923 and 1931 on the Kearsarge Lode, but results were unsatisfactory. In 1933, the Franklin Mining Company dissolved. See also Franklin Mine, Franklin Mine, Franklin Township, Houghton County, Michigan, USA.
Production
Production from the original Franklin Mine and Franklin Jr. amounted to approximately 154 million pounds of refined copper.
For the Collector
Minerals at Franklin Jr. include copper, silver, datolite, and prehnite.
An underground copper mine consisting of five shafts: four in the Pewabic Lode and one into the Allouez Conglomerate.
History
With the exhaustion of its mineral reserves on Quincy Hill, the Franklin Mining Company purchased the old Peninsula Mining Company lands (formerly the Albany & Boston) three miles to the north and renamed it the Franklin Jr. Mine in 1895. Work was focused solely on the northern extension of the Pewabic Lode and four shafts were driven. By 1900, it was determined that the original Albany & Boston shaft, which was driven into conglomerate, had more potential so the company enlarged the shaft to become its primary production shaft. Operations continued until 1920, when the mine was closed. Exploration work was done between 1923 and 1931 on the Kearsarge Lode, but results were unsatisfactory. In 1933, the Franklin Mining Company dissolved. See also Franklin Mine, Franklin Mine, Franklin Township, Houghton County, Michigan, USA.
Production
Production from the original Franklin Mine and Franklin Jr. amounted to approximately 154 million pounds of refined copper.
For the Collector
Minerals at Franklin Jr. include copper, silver, datolite, and prehnite.
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
7 valid minerals.
Detailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Datolite Formula: CaB(SiO4)(OH) |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ 'K Feldspar' |
| ⓘ Laumontite Formula: CaAl2Si4O12 · 4H2O |
| ⓘ Native Copper Formula: Cu |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Datolite | 9.AJ.20 | CaB(SiO4)(OH) |
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Laumontite | 9.GB.10 | CaAl2Si4O12 · 4H2O |
| Unclassified | |||
| ⓘ | 'K Feldspar' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Datolite | CaB(SiO4)(OH) |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| B | Boron | |
| B | ⓘ Datolite | CaB(SiO4)(OH) |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Datolite | CaB(SiO4)(OH) |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Datolite | CaB(SiO4)(OH) |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Datolite | CaB(SiO4)(OH) |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Laumontite | CaAl2Si4O12 · 4H2O |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][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
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Franklin Jr. Mine, Boston, Franklin Township, Houghton County, Michigan, USA