| Locality type: | Hill |
| Classification |
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| Species: | Schorl |
| Formula: | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Comments: | "Excellent doubly-terminated crystals of black tourmaline, 1 to 2 inches in length, and 1/2 to 1 inch in diameter are found at the Iolite locality, often covered with incrustation of autunite." (Davis, 1901). |
| Habit: | short trigonal prisms, doubly-terminated |
| Colour: | black |
| Quality for species: | Good crystals or rich for species - important (!) |
| Abundance at site: | Common |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Magnetite | β4 photos of Schorl associated with Magnetite at this locality. |
| Albite | β3 photos of Schorl associated with Albite at this locality. |
| Quartz | β2 photos of Schorl associated with Quartz at this locality. |
| Garnet Group | 2 photos of Schorl associated with Garnet Group at this locality. |
| Fahlunite | β1 photo of Schorl associated with Fahlunite at this locality. |
| Cordierite | β1 photo of Schorl associated with Cordierite at this locality. |
| Chlorophyllite | β1 photo of Schorl associated with Chlorophyllite at this locality. |
| Data |
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| Mineral Data: | Click here to view Schorl data |
| Locality Data: | Click here to view Timms Hill (Tim's Hill; Iolite Hill), Haddam, Middlesex County, Connecticut, USA |
| Photo Gallery | View Gallery (15 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 134153 |
| Long-form Identifier: | 1:3:134153:9 |
| GUID (UUID V4): | 71d92c6d-07b8-4132-b262-03cabdcd80f6 |
| Nearest other occurrences of Schorl |
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| 1.1km (0.7 miles) | βAlmandine schorl and sillimanite locality, Haddam, Middlesex County, Connecticut, USA |
| 1.1km (0.7 miles) | βHill above the parsonage (unnamed feldspar quarry), Haddam, Middlesex County, Connecticut, USA |
| 1.4km (0.9 miles) | βChrysoberyl locality, Haddam, Middlesex County, Connecticut, USA |
| 1.5km (1.0 miles) | βCivilian Conservation Corps Quarry (CCC Quarry; Smith Quarry; Turkey Hill quarry lot), Haddam, Middlesex County, Connecticut, USA |
| 1.5km (1.0 miles) | βState Route 9 Interchange 13 - Beaver Meadow Road, Haddam, Middlesex County, Connecticut, USA |
| 1.6km (1.0 miles) | βTourmaline locality, Haddam, Middlesex County, Connecticut, USA |
| 1.6km (1.0 miles) | βCivilian Conservation Corps prospect (CCC prospect; Cook columbite prospect), Haddam, Middlesex County, Connecticut, USA |
| 1.6km (1.0 miles) | βGulf Quarry, Haddam, Middlesex County, Connecticut, USA |
| 1.8km (1.1 miles) | βLong-lot Quarry, Haddam, Middlesex County, Connecticut, USA |
| 2.2km (1.4 miles) | βHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA |
| References |
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Timms Hill, Haddam, Middlesex County, Connecticut, USA