| Locality type: | Hill |
| Classification |
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| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
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|
| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Poorhouse Hill, Beverly, Essex County, Massachusetts, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 414295 |
| Long-form Identifier: | 1:3:414295:9 |
| GUID (UUID V4): | 1d4123f6-1d0e-4c27-ba02-b2d2caf288bb |
| Nearest other occurrences of Biotite |
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| 8.6km (5.3 miles) | ⓘAggregate Industries Quarry (Lynn Sand and Stone Co. Quarry; Bardon Trimount Quarry; Hume Quarry), Swampscott, Essex County, Massachusetts, USA |
| 10.1km (6.3 miles) | ⓘDen Granite Quarry, Lynn, Essex County, Massachusetts, USA |
| 12.1km (7.5 miles) | ⓘKallenberg Quarry (Robin Rock Quarry; Jordan Quarry), Lynnfield, Essex County, Massachusetts, USA |
| 21.8km (13.6 miles) | ⓘBlood Ledge Quarry, Gloucester, Essex County, Massachusetts, USA |
| 23.3km (14.5 miles) | ⓘMarble Ridge, North Andover, Essex County, Massachusetts, USA |
| 23.6km (14.7 miles) | ⓘBlueberry Mountain Quarry (Blueberry Hill), Woburn, Middlesex County, Massachusetts, USA |
| 26.5km (16.4 miles) | ⓘI-93/Dascomb Rd. area, Andover, Essex County, Massachusetts, USA |
| 27.0km (16.7 miles) | ⓘGranite Street Quarry (Milk Row Quarry), Somerville, Middlesex County, Massachusetts, USA |
| 44.6km (27.7 miles) | ⓘMcCarthy Quarry, Acton, Middlesex County, Massachusetts, USA |
| 44.9km (27.9 miles) | ⓘWindham, Rockingham County, New Hampshire, USA |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | PETROGRAPHICAL COUNTY, PROVINCE MASS. I. OF ESSEX THE area of igneous rocks in Eastern Massachusetts, especially...especially in Essex county, has been, as the late Geo. H. Williams said, " more discussed than any other...pages are written. I have visited the region of Essex county several times and collected a large number of...of its chief features. The igneous rocks of Essex county extend along the coast from Lynn to the New...Basin, but this paper does not include them. In Essex county they form a long ridge "extending in a northeasterly |
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