Chalk Mountain, Summit County, Colorado, USAi
| Regional Level Types | |
|---|---|
| Chalk Mountain | Mountain |
| Summit County | County |
| Colorado | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 22' 46'' North , 106° 12' 23'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Blue River | 904 (2017) | 15.0km |
| Copper Mountain | 385 (2011) | 15.2km |
| Leadville North | 1,794 (2011) | 15.8km |
| Leadville | 2,644 (2017) | 16.1km |
| Alma | 277 (2017) | 16.3km |
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 |
|---|---|---|
| Colorado Gold Camp | Frisco, Colorado | 24km |
Chalk Mountain is a topaz rhyolite emplacement adjacent to the Climax Molybdenum mine on State Rt. 91 in Summit County Colorado. The site has been reported to contain topaz crystals in lithophyseal cavities in the rhyolite in addition to sanidine crystals 6 mm to 60 mm in length. The collector has not found any topaz at this site however, numerous prismatic sanidine crystals up to 60 mm in length have been collected at the north east corner of Chalk Mountain about one third of the way up the slope. The sanidine prisms are complete and are easily removed from the heavily weathered rhyolite. Also, small (2-4mm) doubly terminated smokey quartz crystals were also found weathering from the rhyolite.
Also extends into Lake and Eagle counties.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Quartz Formula: SiO2 Reference: Personally Collected by Dr. Scott Campbell. |
| ⓘ Quartz var. Smoky Quartz Formula: SiO2 Reference: Minerals of Colorado (1997) E.B. Eckel |
| ⓘ Sanidine Formula: K(AlSi3O8) Reference: Personally Collected by Dr. Scott Campbell. |
| ⓘ Topaz Formula: Al2(SiO4)(F,OH)2 Reference: Personally Collected by Dr. Scott Campbell. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | var. Smoky Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Sanidine | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Topaz | 9.AF.35 | Al2(SiO4)(F,OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| O | Oxygen | |
| O | ⓘ Sanidine | K(AlSi3O8) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| O | ⓘ Quartz var. Smoky Quartz | SiO2 |
| F | Fluorine | |
| F | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Al | Aluminium | |
| Al | ⓘ Sanidine | K(AlSi3O8) |
| Al | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | Silicon | |
| Si | ⓘ Sanidine | K(AlSi3O8) |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | ⓘ Quartz var. Smoky Quartz | SiO2 |
| K | Potassium | |
| K | ⓘ Sanidine | K(AlSi3O8) |
Other Regions, Features and Areas containing this locality
North America
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Great Plains DomainDomain
USA
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