Ayrlawn park, Bethesda, Montgomery County, Maryland, USAi
| Regional Level Types | |
|---|---|
| Ayrlawn park | Group of Outcrops |
| Bethesda | - not defined - |
| Montgomery County | County |
| Maryland | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 0' 13'' North , 77° 7' 8'' West
Latitude & Longitude (decimal):
Type:
Group of Outcrops - last checked 2021
Deposit first discovered:
2020
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bethesda | 60,858 (2018) | 3.0km |
| Chevy Chase View | 977 (2017) | 3.6km |
| South Kensington | 8,462 (2011) | 3.8km |
| North Chevy Chase | 588 (2017) | 4.0km |
| Chevy Chase | 9,545 (2018) | 4.1km |
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 |
|---|---|---|
| Gem, Lapidary, and Mineral Society of Montgomery County, MD., Inc. | Rockville, Maryland | 9km |
| Northern Virginia Mineral Club, Inc. | Arlington, Virginia | 14km |
| Southern Maryland Rock and Mineral Club | Clinton, Maryland | 33km |
| American Fossil Federation | Bowie, Maryland | 34km |
| Maryland Geological Society | Bowie, Maryland | 34km |
Mindat Locality ID:
409770
Long-form identifier:
mindat:1:2:409770:2
GUID (UUID V4):
36596238-1072-4907-ac42-74dad74a2a1d
Limonite after pyrite, schorl, and quartz crystals can be found in the two large quartz veins and schist in the woods of Ayrlawn park. Large crystals and masses of limonite after pyrite are found in the veins and surrounding schist, though aren't well formed due to weathering. Masses of schorl made up of tiny crystals are common from the vein. Limonite after pyrite is found in the vicinity, along with schorl. Pyrite is found inside some of the large pseudomorphs, but is rarely found. Quartz crystals are found by breaking quartz rocks open, and are usually small, up to 2 cm. This quartz vein may be similar to the vein excavated in the Bethesda mine.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
5 valid minerals. 1 erroneous literature entry.
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:
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 Description: almandine, rare References: |
| ⓘ Hematite Formula: Fe2O3 Description: red coatings in schist and quartz References: |
| ⓘ 'Limonite' References: |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 References: |
| ⓘ Pyrite Formula: FeS2 References: |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ Quartz var. Rock Crystal Formula: SiO2 References: |
| ⓘ Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) References: |
| ⓘ Formula: Fe2+2Al9Si4O23(OH) Description: Misidentified, actually schorl References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | var. Rock Crystal | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Staurolite ? | 9.AF.30 | Fe2+2Al9Si4O23(OH) |
| ⓘ | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| B | Boron | |
| B | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | Oxygen | |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| O | ⓘ Quartz var. Rock Crystal | SiO2 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Na | Sodium | |
| Na | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | Aluminium | |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| Si | Silicon | |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
| Si | ⓘ Quartz var. Rock Crystal | SiO2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Fe | ⓘ Staurolite | Fe22+Al9Si4O23(OH) |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Piedmontia DomainDomain
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Ayrlawn park, Bethesda, Montgomery County, Maryland, USA