| Lat / long: | 42.49526, -72.9473 |
| Primary: | Manganese |
| Secondary: | Iron |
| Tertiary: | Gemstone |
| Ore: | Ankerite, Cummingtonite, Pyrolusite, Rhodochrosite, Rhodonite |
| Orebody form: | LENSES |
| Discovery year: | 1830 |
| Operation type: | Unknown |
| Deposit type: | Replacement |
| Production size: | Yes |
| Development status: | Producer |
| First production started: | 1925 |
| Structure: | East Limb Of Berkshire Anticlinorium ; Reg.Trends: North To Northeast, Drag Folds |
| Tectonic: | East To Southeast Dipping Homocline |
| Alteration processes: | Regional Metamorphism |
| MRDS | W000039 |
| DEP | 10067329 |
| Reference | {Deposit:: HATCH, N.L., 1969, USGS GQ 85}{Deposit:: 1952 OTHER CRITTENDEN, M., USGS, RECON AND COMPIL}{Production:: QUINN, A.W., 1945} |
| Reporter | *gostino, John P. |