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Oregon No. 2 pegmatite (Raleigh Peak No. 3 pegmatite), South Platte Pegmatite Mining District, Jefferson County, Colorado, USAi
| Regional Level Types | |
|---|---|
| Oregon No. 2 pegmatite (Raleigh Peak No. 3 pegmatite) | Pegmatite |
| South Platte Pegmatite Mining District | Mining District |
| Jefferson County | County |
| Colorado | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 23' 22'' North , 105° 13' 20'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Roxborough Park | 9,099 (2011) | 15.0km |
| Aspen Park | 882 (2011) | 17.8km |
| Louviers | 269 (2011) | 20.9km |
| Ken Caryl | 32,438 (2014) | 22.8km |
| Sedalia | 206 (2011) | 23.2km |
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 |
|---|---|---|
| Littleton Gem and Mineral Club, Inc. | Littleton, Colorado | 30km |
| Colorado Mineral Society | Lakewood, Colorado | 37km |
| Denver Gem and Mineral Guild | Denver, Colorado | 44km |
| Friends of Mineralogy - Colorado Chapter | Denver, Colorado | 44km |
| Western Interior Paleontological Society | Denver, Colorado | 44km |
Sec 33 T7S R70W
A rare earth pegmatite with a wall zone, outer-intermediate zone of biotite, quartz core, and a core margin replacement unit of biotite and hematite. The intermediate zone was mined for microcline.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
5 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:
| ⓘ 'Allanite Group' Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) Colour: black Description: Occurs in pods up to 8-10" across along with other minerals. Only massive observed, no crystals. References: |
| ⓘ 'Bastnäsite' Formula: (Ce/Nd/Y/REE)(CO3)F Colour: brick red Description: XRF indicated Ce, Y and Th, but was unable to give a reliable determination of if it was Y or Ce dominant. References: |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ Fluorite Formula: CaF2 Colour: purple, colorless Description: Fluorite ranging from colorless to dark purple in small masses, 1cm or less, were found. References: |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Microcline Formula: K(AlSi3O8) |
| ⓘ Quartz Formula: SiO2 Colour: milky, colorless Description: Mostly massive milky quartz, with some small clear crystals found in cavities. References: |
| ⓘ Topaz Formula: Al2(SiO4)(F,OH)2 Colour: colorless Description: The topaz was not well formed, and was badly fractured from blasting References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 3 - Halides | |||
|---|---|---|---|
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Topaz | 9.AF.35 | Al2(SiO4)(F,OH)2 |
| ⓘ | Microcline | 9.FA.30 | K(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Bastnäsite' | - | (Ce/Nd/Y/REE)(CO3)F |
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Allanite Group' | - | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| H | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| C | Carbon | |
| C | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| O | Oxygen | |
| O | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Microcline | K(AlSi3O8) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| O | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| F | Fluorine | |
| F | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| F | ⓘ Fluorite | CaF2 |
| F | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | Aluminium | |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Microcline | K(AlSi3O8) |
| Al | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | Silicon | |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Microcline | K(AlSi3O8) |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Microcline | K(AlSi3O8) |
| Ca | Calcium | |
| Ca | ⓘ Fluorite | CaF2 |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | Iron | |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Hematite | Fe2O3 |
| Y | Yttrium | |
| Y | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| Ce | Cerium | |
| Ce | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
| Nd | Neodymium | |
| Nd | ⓘ Bastnäsite | (Ce/Nd/Y/REE)(CO3)F |
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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Oregon No. 2 pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA