Chamosite from
Rollstone Hill Quarries, Fitchburg, Worcester County, Massachusetts, USA
| Locality type: | Quarry | |
| Classification | ||
|---|---|---|
| Species: | Chamosite | |
| Formula: | (Fe2+)5Al(Si,Al)4O10(OH,O)8 | |
| Comments: | Occurs as an alteration of biotite. | |
| Colour: | dark green | |
| Quality for species: | Poor for species, only of interest for locality collectors. (#) | |
| Abundance at site: | Rare | |
| Confirmation | ||
| Validity: | Confirmed | |
| Confirmation Methods: | SEM-EDS | |
| Associated Minerals: | ||
| Associates: | Calcite Fluorite Ilmenite Muscovite Quartz | |
| Associated Minerals Based on Photo Data: | ||
| Muscovite | ⓘ1 photo of Chamosite associated with Muscovite at this locality. | |
| Calcite | ⓘ1 photo of Chamosite associated with Calcite at this locality. | |
| Ilmenite | ⓘ1 photo of Chamosite associated with Ilmenite at this locality. | |
| Data | ||
| Mineral Data: | Click here to view Chamosite data | |
| Locality Data: | Click here to view Rollstone Hill Quarries, Fitchburg, Worcester County, Massachusetts, USA | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 695390 | |
| Long-form Identifier: | 1:3:695390:4 | |
| GUID (UUID V4): | 74ff1bb7-fe79-47ee-b37c-511361dbd993 | |
| Nearest other occurrences of Chamosite | ||
| 24.1km (15.0 miles) | ⓘComolli Granite Quarry, Milford, Hillsborough County, New Hampshire, USA | |
| 30.1km (18.7 miles) | ⓘYoung Quarry, Milford, Hillsborough County, New Hampshire, USA | |
| 43.2km (26.9 miles) | ⓘPelham, Hillsborough County, New Hampshire, USA | |
| 43.6km (27.1 miles) | ⓘJoppa Hill, Amherst, Hillsborough County, New Hampshire, USA | |
| 47.0km (29.2 miles) | ⓘAggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex County, Massachusetts, USA | |
| 63.7km (39.6 miles) | ⓘWest Roxbury Crushed Stone Quarry (West Roxbury Trap Rock Co. Quarry; Grove St. Quarry), West Roxbury, Boston, Suffolk County, Massachusetts, USA | |
| References | ||
Rollstone Hill Quarries, Fitchburg, Worcester County, Massachusetts, USA