| Locality type: | Quarry |
| Classification |
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| Species: | Magnesio-hornblende |
| Formula: | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| Formation: | Primary |
| Comments: | Mostly as a metamorphic retrograde alteration of pyroxene in the host metagabbro, but also as an uncommon mineral in the open vein assemblage - a rarity in the state. Crystals to 1 cm. |
| Habit: | elongated prismatic |
| Colour: | black |
| Quality for species: | Good crystals or rich for species - important (!) |
| Abundance at site: | Common |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | SEM-EDS |
| Data |
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| Mineral Data: | Click here to view Magnesio-hornblende data |
| Locality Data: | Click here to view Becker Quarry (Becker's Quarry), West Willington, Willington, Tolland County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1033420 |
| Long-form Identifier: | 1:3:1033420:7 |
| GUID (UUID V4): | 07b23002-585e-4ef8-8ec9-814d592ae8c0 |
| Nearest other occurrences of Magnesio-hornblende |
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| 38.1km (23.7 miles) | ⓘEast Hampton (Chatham), Middlesex County, Connecticut, USA |
| 40.8km (25.4 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 52.1km (32.4 miles) | ⓘSpring Lake, Harrisville, Burrillville, Providence County, Rhode Island, USA |
| 66.7km (41.5 miles) | ⓘManville Quarry (Riverview Quarry; CQC Quarry; Forte Brothers Quarry; Todesca Quarry), Cumberland, Providence County, Rhode Island, USA |
| 67.8km (42.2 miles) | ⓘConklin Quarry, Lime Rock, Lincoln, Providence County, Rhode Island, USA |
| 68.8km (42.8 miles) | ⓘMaple Ridge Drive, Cumberland, Providence County, Rhode Island, USA |
| 69.2km (43.0 miles) | ⓘIron Mine Hill quarry, Cumberland, Providence County, Rhode Island, USA |
| 69.7km (43.3 miles) | ⓘDexter Quarry (Dexter Lime Quarry), Lime Rock, Lincoln, Providence County, Rhode Island, USA |
| 69.9km (43.5 miles) | ⓘSneech Pond copper mines (Copper Mine Hill), Cumberland, Providence County, Rhode Island, USA |
| 70.0km (43.5 miles) | ⓘBeacon Pole Hill quarry, Cumberland, Providence County, Rhode Island, USA |
| References |
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