| 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 Wiant's Quarry (Weiant Quarry), Pilot, Cecil County, Maryland, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 860124 |
| Long-form Identifier: | 1:3:860124:7 |
| GUID (UUID V4): | 74fd1d9f-a38c-437b-af85-53cdb9701a26 |
| Nearest other occurrences of Opal |
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| 12.9km (8.0 miles) | ⓘMaryland Green Marble Corporation Quarry (Cardiff Serpentine Quarry), Cardiff, Harford County, Maryland, USA |
| 53.9km (33.5 miles) | ⓘBare Hills Serpentine Quarry East, Bare Hills, Baltimore County, Maryland, USA |
| 54.0km (33.5 miles) | ⓘUnnamed Chromite prospects, Bare Hills, Baltimore County, Maryland, USA |
| 62.5km (38.9 miles) | ⓘDelight Quarry (Soldier's Delight Quarry; Dyer Quarry), Soldiers' Delight ridge, Delight, Baltimore County, Maryland, USA |
| 64.2km (39.9 miles) | ⓘLord Baltimore Drive Quartz occurrence area, Windsor Mill, Baltimore County, Maryland, USA |
| 67.0km (41.7 miles) | ⓘPatapsco Glen Construction Site, Woodlawn, Baltimore County, Maryland, USA |
| 68.3km (42.4 miles) | ⓘDyer Quarry, Gibraltar, Birdsboro, Berks County, Pennsylvania, USA |
| 68.3km (42.5 miles) | ⓘGarey Ore Bank, Anne Arundel County, Maryland, USA |
| 90.8km (56.4 miles) | ⓘTeeter Quarry (Teeters Quarry; Valley Quarry; John S. Teeter and Sons Co. Quarry; Gettysburg Quarry; H.T. Campbell's Teeter's Quarry), Gettysburg, Adams County, Pennsylvania, USA |
| 91.6km (56.9 miles) | ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA |
| References |
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