| Locality type: | Quarry |
| 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 Vulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 369628 |
| Long-form Identifier: | 1:3:369628:6 |
| GUID (UUID V4): | 5e55e649-9df5-4bd1-939d-132f873a01ac |
| Nearest other occurrences of Opal |
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| 10.3km (6.4 miles) | ⓘBull Run Quarry, Conklin, Loudoun County, Virginia, USA |
| 11.5km (7.2 miles) | ⓘCentreville, Culpeper Basin, Fairfax County, Virginia, USA |
| 33.4km (20.7 miles) | ⓘOld Goose Creek Quarry, Leesburg, Loudoun County, Virginia, USA |
| 43.1km (26.8 miles) | ⓘHunting Hill Quarry, Rockville, Montgomery County, Maryland, USA |
| 53.9km (33.5 miles) | ⓘBerryville Mine (Keneagy Ore Bank), Clarke County, Virginia, USA |
| 56.5km (35.1 miles) | ⓘWhite Oak, Montgomery County, Maryland, USA |
| 56.8km (35.3 miles) | ⓘPaint Branch, Silver Spring, Montgomery County, Maryland, USA |
| 64.3km (40.0 miles) | ⓘCedar Mountain Stone Corp. Quarry (A. H. Smith quarry), Mitchell, Culpeper County, Virginia, USA |
| 72.2km (44.9 miles) | ⓘOld Greensand-Diatomaceous Earth Pit, Calvert County, Maryland, USA |
| 82.5km (51.3 miles) | ⓘAllah Cooper Mine (Alley-Cooper Mine; Ali Cooper Mine; Valcooper Mine), Gold-Pyrite Belt, Louisa County, Virginia, USA |
| References |
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