Highway 220 roadcut, Monterey, Highland County, Virginia, USAi
| Regional Level Types | |
|---|---|
| Highway 220 roadcut | Road Cutting |
| Monterey | - not defined - |
| Highland County | County |
| Virginia | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
38° 26' 4'' North , 79° 33' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Monterey | 136 (2017) | 3.6km |
| Bartow | 111 (2011) | 23.6km |
| Green Bank | 143 (2011) | 24.6km |
| Durbin | 288 (2017) | 26.9km |
| Deerfield | 132 (2011) | 29.2km |
Johnson, et al(1971) describe this as an amygdaloidal, porphyritic andesite sill, of Eocene age (47 my) exposed in a roadcut on Highway 220, 2.2 miles NE of Monterey. Most of the feldspar and hornblende phenocrysts have been replaced by harmotome. Baryte occurs in the amygdules.
Currently (July 2011) the outcrop is heavily overgrown with fragments of igneous material exposed in only one limited area. None of the exposed material, seen by this author (Warren Cummings), appeared to be vuggy. However, subsequent examination revealed tiny pores, frequently containing very small white roundish objects. The pores are sub millimeter in size and look tiny with a 10X hand lens. From a mineralogical standpoint this is truly micromount material.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Cristobalite Formula: SiO2 |
| ⓘ 'Fayalite-Forsterite Series' |
| ⓘ Harmotome Formula: Ba2(Si12Al4)O32 · 12H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Cristobalite | 4.DA.15 | SiO2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| Group 9 - Silicates | |||
| ⓘ | Harmotome | 9.GC.10 | Ba2(Si12Al4)O32 · 12H2O |
| Unclassified | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Harmotome | Ba2(Si12Al4)O32 · 12H2O |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Cristobalite | SiO2 |
| O | ⓘ Harmotome | Ba2(Si12Al4)O32 · 12H2O |
| O | ⓘ Fayalite-Forsterite Series | |
| Mg | Magnesium | |
| Mg | ⓘ Fayalite-Forsterite Series | |
| Al | Aluminium | |
| Al | ⓘ Harmotome | Ba2(Si12Al4)O32 · 12H2O |
| Si | Silicon | |
| Si | ⓘ Cristobalite | SiO2 |
| Si | ⓘ Harmotome | Ba2(Si12Al4)O32 · 12H2O |
| Si | ⓘ Fayalite-Forsterite Series | |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| Fe | Iron | |
| Fe | ⓘ Fayalite-Forsterite Series | |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Ba | ⓘ Harmotome | Ba2(Si12Al4)O32 · 12H2O |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Appalachian BasinBasin
- SCAB DomainDomain
- Southern and Central ApplachianAccretionary Complex
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
Highway 220 roadcut, Monterey, Highland County, Virginia, USA