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Athol babingtonite locality, Athol, Worcester County, Massachusetts, USAi
| Regional Level Types | |
|---|---|
| Athol babingtonite locality | Railway Cutting (Lost) |
| Athol | Town |
| Worcester County | County |
| Massachusetts | State |
| USA | Country |
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Latitude & Longitude (WGS84):
42° North , 72° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
Type:
Railway Cutting (Lost) - last checked 2019
Köppen climate type:
Babingtonite was first reported from one of the "railroad excavations" in Athol by Charles U. Shepard in 1849. James D. Dana later questioned the identification of the mineral as babingtonite, but Palache and Fraprie (1902) confirmed that Shepard's ID was correct; they also cite Professor B. K. Emerson as saying the locality was no longer accessible.
The material studied consists of a large matrix specimen and a number of small crystals, all apparently detached from the larger mass. This is a fragment of chloritic gneiss bounded on two surfaces by what were clearly veins. These faces are coated with a thin drusy layer of dark green epidote, upon which, on one side, the babingtonite is implanted. It is in brilliant shining black crystals, most of the faces striated and curved or warped, the largest crystal not exceeding 0.3 cm in diameter. Only by using the very smallest crystals, on which the curvature of the faces was least marked, could satisfactory measurements be obtained.
With the babingtonite are a number of sharp cubes of perfectly fresh pyrite. These were deposited before the babingtonite, as is shown by a narrow vein of the latter mineral traversing one of the pyrite crystals. There are also several minute rosettes of prehnite implanted on the babingtonite and a small amount of a platy zeolite which from incomplete tests appears to be apophyllite.
With the babingtonite are a number of sharp cubes of perfectly fresh pyrite. These were deposited before the babingtonite, as is shown by a narrow vein of the latter mineral traversing one of the pyrite crystals. There are also several minute rosettes of prehnite implanted on the babingtonite and a small amount of a platy zeolite which from incomplete tests appears to be apophyllite.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ 'Apophyllite Group' Formula: AB4[Si8O22]X · 8H2O |
| ⓘ Babingtonite Formula: Ca2Fe2+Fe3+Si5O14(OH) |
| ⓘ 'Chlorite Group' |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Fluorite Formula: CaF2 |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 |
| ⓘ Pyrite Formula: FeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Babingtonite | 9.DK.05 | Ca2Fe2+Fe3+Si5O14(OH) |
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Apophyllite Group' | - | AB4[Si8O22]X · 8H2O |
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Apophyllite Group | AB4[Si8O22]X · 8H2O |
| H | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Apophyllite Group | AB4[Si8O22]X · 8H2O |
| O | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| F | Fluorine | |
| F | ⓘ Fluorite | CaF2 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Apophyllite Group | AB4[Si8O22]X · 8H2O |
| Si | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Fluorite | CaF2 |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Pyrite | FeS2 |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Ganderia DomainDomain
- GranderiaPassive Margin
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Athol babingtonite locality, Athol, Worcester County, Massachusetts, USA