| Locality type: | Quarry |
| Classification |
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| Species: | 'Heulandite Subgroup' (not an IMA approved species) |
| Formula: | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| Habit: | Druzy coating |
| Colour: | orange |
| Abundance at site: | Common |
| Confirmation |
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|
| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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| Siderite | 1 |
| Data |
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| Mineral Data: | Click here to view Heulandite Subgroup data |
| Locality Data: | Click here to view Havre De Grace Quarry, Harford County, Maryland, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 786064 |
| Long-form Identifier: | 1:3:786064:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Heulandite Subgroup |
|---|
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| 53.4km (33.2 miles) | ⓘWoodberry Quarry, Woodberry, Baltimore City, Maryland, USA |
| 72.1km (44.8 miles) | ⓘMineral Hill Mine, Louisville, Carroll County, Maryland, USA |
| 74.7km (46.4 miles) | ⓘDeshong's Quarry, Leiperville, Ridley Township, Delaware County, Pennsylvania, USA |
| 75.8km (47.1 miles) | ⓘFrench Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA |
| 79.1km (49.1 miles) | ⓘH&K Birdsboro Materials Quarry (Dyer Trap Rock Quarry; Hay Creek Trap Rock Quarry), Hay Creek, Birdsboro, Berks County, Pennsylvania, USA |
| 80.3km (49.9 miles) | ⓘDyer Quarry, Gibraltar, Birdsboro, Berks County, Pennsylvania, USA |
| 81.3km (50.5 miles) | ⓘCornwall Mines (Cornwall Iron Mine), Cornwall Borough (Cornwall), Lebanon County, Pennsylvania, USA |
| 89.3km (55.5 miles) | ⓘUnnamed roadcut, Rossville, Warrington Township, York County, Pennsylvania, USA |
| 89.7km (55.7 miles) | ⓘRock Hill Road, Pencoyd (West Manayunk), Lower Merion Township, Montgomery County, Pennsylvania, USA |
| 91.8km (57.1 miles) | ⓘFalls of Schuylkill, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA |
| References |
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