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Freeland Mine & Extension Mine (Extension Line Shaft; Minnie Tunnel; Diamond Tunnel; Platt Tunnel; Freeland Shaft), Lamartine Mining District, Clear Creek County, Colorado, USAi
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Latitude & Longitude (WGS84):
39° 44' 26'' North , 105° 35' 29'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Downieville-Lawson-Dumont | 594 (2011) | 3.5km |
| Idaho Springs | 1,728 (2017) | 6.7km |
| Empire | 287 (2017) | 8.3km |
| Central City | 724 (2017) | 9.5km |
| Saint Marys | 283 (2011) | 9.7km |
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 |
|---|---|---|
| Flatirons Mineral Club | Boulder, Colorado | 41km |
| Mile High Rock and Mineral Society | Arvada, Colorado | 44km |
| Colorado Mineral Society | Lakewood, Colorado | 44km |
| Colorado Gold Camp | Frisco, Colorado | 47km |
The Freeland vein, about 4 miles west of Idaho Springs, was discovered in 1861. It is a strong trunk vein having a northeast strike and rather gentle dip, which averages 36° NW. It is about 2,200 feet long and is opened by several tunnels, the lowest of which has its portal near the bottom of Trail Creek. There are six levels beneath this lowest or Freeland tunnel. The McClelland tunnel has its portal on the Clear Creek side of the divide, below Dumont, and cuts the veins about 400 feet below the bottom of the Freeland shaft. This tunnel is more than 5,100 feet long. A map of the Freeland mine shows about 4 1niles of underground workings. The Gum Tree vein, a branch of the Freeland vein, is opened by an inclined shaft and has several thousand feet of workings. The Toledo is also opened by an inclined shaft.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Anglesite Formula: PbSO4 References: |
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 References: |
| ⓘ Caledonite Formula: Pb5Cu2(SO4)3(CO3)(OH)6 References: |
| ⓘ Cerussite Formula: PbCO3 References: |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Dolomite Formula: CaMg(CO3)2 |
| ⓘ Galena Formula: PbS |
| ⓘ Minium Formula: Pb3O4 References: |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyromorphite Formula: Pb5(PO4)3Cl |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Siderite Formula: FeCO3 References: |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ 'Tennantite Subgroup' Formula: Cu6(Cu4C2+2)As4S12S |
| ⓘ Tenorite Formula: CuO References: |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| ⓘ | 'Tennantite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)As4S12S |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Tenorite | 4.AB.10 | CuO |
| ⓘ | Minium | 4.BD.05 | Pb3O4 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| ⓘ | Cerussite | 5.AB.15 | PbCO3 |
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Anglesite | 7.AD.35 | PbSO4 |
| ⓘ | Caledonite | 7.BC.50 | Pb5Cu2(SO4)3(CO3)(OH)6 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Pyromorphite | 8.BN.05 | Pb5(PO4)3Cl |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| C | Carbon | |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| C | ⓘ Cerussite | PbCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Siderite | FeCO3 |
| O | Oxygen | |
| O | ⓘ Anglesite | PbSO4 |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| O | ⓘ Cerussite | PbCO3 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Minium | Pb3O4 |
| O | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Siderite | FeCO3 |
| O | ⓘ Tenorite | CuO |
| Mg | Magnesium | |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| P | Phosphorus | |
| P | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| S | Sulfur | |
| S | ⓘ Anglesite | PbSO4 |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Cl | Chlorine | |
| Cl | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| Ca | Calcium | |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Siderite | FeCO3 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| Cu | ⓘ Tenorite | CuO |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| As | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| Sb | Antimony | |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Pb | Lead | |
| Pb | ⓘ Anglesite | PbSO4 |
| Pb | ⓘ Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| Pb | ⓘ Cerussite | PbCO3 |
| Pb | ⓘ Galena | PbS |
| Pb | ⓘ Minium | Pb3O4 |
| Pb | ⓘ Pyromorphite | Pb5(PO4)3Cl |
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Great Plains DomainDomain
- Southern Rocky MountainsOrogenic Belt
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Freeland Mine & Extension Mine, Lamartine Mining District, Clear Creek County, Colorado, USA