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Anthophyllite from
Amphibole-tourmaline-magnetite locality, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
| Locality type: | Outcrop | |
| Classification | ||
|---|---|---|
| Species: | Anthophyllite | |
| Formula: | ◻Mg2Mg5(Si8O22)(OH)2 | |
| Comments: | As feathery crystal groups aligned with foliation, crystals typically up to 6 cm long. TEM-EDS analyses were conducted on typical amphiboles in the Middletown Formation. These all proved to be anthophyllite. | |
| Habit: | elongated, flattened prisms | |
| Colour: | black to dark green | |
| Quality for species: | Good crystals or rich for species - important (!) | |
| Abundance at site: | Very common | |
| Confirmation | ||
| Validity: | Believed Valid | |
| Associated Minerals Based on Photo Data: | ||
| Tourmaline | 1 | |
| Magnetite | 1 | |
| Data | ||
| Mineral Data: | Click here to view Anthophyllite data | |
| Locality Data: | Click here to view Amphibole-tourmaline-magnetite locality, Haddam Neck, Haddam, Middlesex County, Connecticut, USA | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 920479 | |
| Long-form Identifier: | 1:3:920479:9 | |
| GUID (UUID V4): | 0 | |
| Nearest other occurrences of Anthophyllite | ||
| 1.6km (1.0 miles) | ⓘHaddam Neck, Haddam, Middlesex County, Connecticut, USA | |
| 3.9km (2.4 miles) | ⓘSandy Hill, Haddam, Middlesex County, Connecticut, USA | |
| 4.6km (2.9 miles) | ⓘTimms Hill (Tim's Hill; Iolite Hill), Haddam, Middlesex County, Connecticut, USA | |
| 6.1km (3.8 miles) | ⓘState Route 9 Interchange 13 - Beaver Meadow Road, Haddam, Middlesex County, Connecticut, USA | |
| 17.8km (11.1 miles) | ⓘHaynes Deep River Quarry, Deep River, Middlesex County, Connecticut, USA | |
| 52.4km (32.6 miles) | ⓘSatan's Kingdom talc deposits, New Hartford, Litchfield County, Connecticut, USA | |
| 94.3km (58.6 miles) | ⓘBrown's Quarry, Town of Kent, Putnam County, New York, USA | |
| 94.6km (58.8 miles) | ⓘPelham asbestos mine, Pelham, Hampshire County, Massachusetts, USA | |
| References | ||
Amphibole-tourmaline-magnetite locality, Haddam Neck, Haddam, Middlesex County, Connecticut, USA