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Knobs region, Kentucky Agate District, Kentucky, USAi
| Regional Level Types | |
|---|---|
| Knobs region | Region |
| Kentucky Agate District | Mining District |
| Kentucky | State |
| USA | Country |
This page kindly sponsored by Bluegrass Gem and Mineral Club of Central Kentucky
Latitude & Longitude:
37° North , 86° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~215km
Type:
This sub locality has been added to define the broad area where Kentucky agates are found. The Knobs Region of Kentucky is a wide “u” shaped arc that extends for about 230 miles through central Kentucky. The eastern portion of the Knobs Region is bounded on the east by the Cumberland Plateau. The region is made up a complex system of creeks and rivers that have eroded the edge of the Cumberland Plateau into a network of ridges and conical hills called “knobs”.
The Kentucky Agate district, where the agates are found, is comprised of six counties; Powell, Madison, Estill, Lee, Rockcastle, and Jackson. The agates formed in a narrow band in the Nada member of the Borden Formation located near the contact with the overlying Renfro member. The host rock is an olive green to gray siltstone. Most of the agates are found as alluvium in the stream beds. The land is privately owned and permission must be granted for collecting.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ Quartz var. Agate Formula: SiO2 References: |
| ⓘ Quartz var. Chalcedony Formula: SiO2 References: |
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 |
| ⓘ | 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 | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Agate | SiO2 |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Quartz | SiO2 |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Granite-Rhyolite ProvinceMagmatic Province
- Illinois BasinBasin
- Shawnee DomainDomain
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Knobs region, Kentucky Agate District, Kentucky, USA