| Locality type: | Quarry |
| Classification |
|---|
|
| Species: | Almandine |
| Formula: | Fe32+Al2(SiO4)3 |
| Comments: | 7 specimens were tested for Fe and Mn content using X-ray fluorescence. The Mn percentage of the total Fe+Mn content varied from 23 to 47%, indicating there were all almandine. Crystals are typically coated with dark, probable Mn oxides coating, but this does not prove they are spessartine. |
| Habit: | complex mix of forms, generally modified trapezohedrons |
| Colour: | maroon |
| Quality for species: | Good crystals or rich for species - important (!) |
| Abundance at site: | Rare |
| Confirmation |
|---|
|
| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
|---|
|
| Albite | ⓘ25 photos of Almandine associated with Albite at this locality. |
| Quartz | ⓘ15 photos of Almandine associated with Quartz at this locality. |
| Muscovite | ⓘ14 photos of Almandine associated with Muscovite at this locality. |
| Beryl | ⓘ5 photos of Almandine associated with Beryl at this locality. |
| Meta-autunite | ⓘ4 photos of Almandine associated with Meta-autunite at this locality. |
| Fluorapatite | ⓘ4 photos of Almandine associated with Fluorapatite at this locality. |
| Uranophane | ⓘ4 photos of Almandine associated with Uranophane at this locality. |
| Garnet Group | 1 photo of Almandine associated with Garnet Group at this locality. |
| Smoky Quartz | ⓘ1 photo of Almandine associated with Smoky Quartz at this locality. |
| Microcline | ⓘ1 photo of Almandine associated with Microcline at this locality. |
| Data |
|---|
|
| Mineral Data: | Click here to view Almandine data |
| Locality Data: | Click here to view Nathan Hall Quarry (Clark Hill Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| Photo Gallery | View Gallery (24 photos) |
| Data Identifiers |
|---|
|
| Mindat Occurrence Record ID: | 654965 |
| Long-form Identifier: | 1:3:654965:7 |
| GUID (UUID V4): | f38cd204-af89-432b-9a72-dc918639a629 |
| Nearest other occurrences of Almandine |
|---|
|
|
| 0.2km (0.1 miles) | ⓘState Forest Quarry No. 1 (State Forest #1 Quarry; Clark Hill Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 0.3km (0.2 miles) | ⓘClark Hill prospect, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 2.0km (1.2 miles) | ⓘGreat Hill cobalt mines, Cobalt, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 2.4km (1.5 miles) | ⓘState Forest Quarry No. 2 (State Forest #2 Mica Mine; Carini Quarry), Cobalt, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 3.2km (2.0 miles) | ⓘPelton's Quarry, Portland, Middlesex County, Connecticut, USA |
| 4.1km (2.6 miles) | ⓘHale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 4.2km (2.6 miles) | ⓘTourmaline locality, Airline Railroad, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 4.3km (2.7 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 4.3km (2.7 miles) | ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 4.7km (2.9 miles) | ⓘGarnet prospect, Middle Haddam, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| References |
|---|
|
|
Nathan Hall Quarry, East Hampton, Middlesex County, Connecticut, USA