Adams Hartville agate mine, Guernsey, Platte County, Wyoming, USAi
| Regional Level Types | |
|---|---|
| Adams Hartville agate mine | Mine |
| Guernsey | Town |
| Platte County | County |
| Wyoming | State |
| USA | Country |
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Latitude & Longitude (WGS84):
42° North , 104° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~3km
Type:
Köppen climate type:
Description taken from https://wyquartz.blogspot.com/2011/04/agate-jasper-quartz-chalcendony-more.html :
"Adams Hartville agate mine (section 25, T27N, R66W). The Adams Hartville agate mine is located a short distance north of the town of Guernsey near the top of a hill in the center of section 25 (Eloxite Corporation, 1971). This appears to be at the same location as the Wilde and Deercorne mine referred to by the U.S. Geological Survey in 1908. The mine is responsible for most of the moss agate production from the Hartville area. The U.S. Geological Survey indicated that 2 tons of moss agate were produced in 1893, more than 7 tons in 1903, and 3.5 tons in 1908.
The agate varies from clear to white with black dendritic moss-like inclusions, and fluoresces bright-green under ultraviolet light. At this locality, the Guernsey Limestone contains some lower quartzite beds and rests unconformably on Precambrian (Archean) quartzites, phyllites, and schists (U.S. Geological Survey, 1908).
Moss agate, mined around the turn of the century, was recovered from an irregular vein that varied from 1 inch to 2 feet thick and crosscut the Guernsey Limestone. Red banded agate has also been reported at this locality. About 200 yards north of the mine, some copper prospects were reported by Eloxite Corporation (1971) to contain brown jasper with bright blue streaks of chrysocolla."
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities1 valid mineral.
Detailed Mineral List:
| ⓘ Quartz Formula: SiO2 Localities: Description: Moss & red-banded varieties |
| ⓘ Quartz var. Agate Formula: SiO2 Description: Moss & red-banded varieties |
| ⓘ Quartz var. Chalcedony Formula: SiO2 Description: Moss & red-banded varieties |
| ⓘ Quartz var. Moss Agate Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz var. Agate | 4.DA.05 | SiO2 |
| ⓘ | var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | var. Moss Agate | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz var. Agate | SiO2 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Quartz var. Moss Agate | SiO2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Agate | SiO2 |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Quartz var. Moss Agate | SiO2 |
| Si | ⓘ Quartz | SiO2 |
Localities in this Region
- Wyoming
- Platte County
- Guernsey
- Adams Hartville agate mine
- Guernsey
- Platte County
Other Regions, Features and Areas containing this locality
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References
