Locality type: | Pit |
Classification |
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Species: | Opal |
Formula: | SiO2 · nH2O |
Confirmation |
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Validity: | Believed Valid |
Data |
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Mineral Data: | Click here to view Opal data |
Locality Data: | Click here to view Old Greensand-Diatomaceous Earth Pit, Calvert County, Maryland, USA |
Data Identifiers |
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Mindat Occurrence Record ID: | 997592 |
Long-form Identifier: | 1:3:997592:7 |
GUID (UUID V4): | cc93f411-23a2-43c5-b398-0ed880d9f0c8 |
Nearest other occurrences of Opal |
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45.1km (28.0 miles) | ⓘWhite Oak, Montgomery County, Maryland, USA |
45.3km (28.1 miles) | ⓘPaint Branch, Silver Spring, Montgomery County, Maryland, USA |
56.9km (35.4 miles) | ⓘGarey Ore Bank, Anne Arundel County, Maryland, USA |
61.6km (38.3 miles) | ⓘHunting Hill Quarry, Rockville, Montgomery County, Maryland, USA |
65.2km (40.5 miles) | ⓘCentreville, Culpeper Basin, Fairfax County, Virginia, USA |
67.6km (42.0 miles) | ⓘPatapsco Glen Construction Site, Woodlawn, Baltimore County, Maryland, USA |
69.2km (43.0 miles) | ⓘLord Baltimore Drive Quartz occurrence area, Windsor Mill, Baltimore County, Maryland, USA |
72.2km (44.9 miles) | ⓘVulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA |
75.0km (46.6 miles) | ⓘBull Run Quarry, Conklin, Loudoun County, Virginia, USA |
75.2km (46.8 miles) | ⓘUnnamed Chromite prospects, Bare Hills, Baltimore County, Maryland, USA |
References |
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