| Basis for focus area |
Buffered point of Kinney-Cobble Mn mine (MRDS dep_id: 10100544); limonite (ocher of Burt, 1931). Other small deposits occur throughout Vermont and consist of kaolin, ocher, quartz, iron and Mn ores, and lignite. Also called "Brandon lignite". |
| Identified resources |
Historical production of iron. |
| Production |
Unknown. |
| Status |
Past mining; two shafts sunk in 1840 (Burt, 1931, p. 124). |
| Estimated resources |
Unknown, but likely minor. |
| Geologic maps |
Ratcliffe and Walsh (1998), scale 1:24,000. |
| Geophysical data |
Inadequate Rank 3 and 4 aeromagnetic and Rank 5 aeroradiometric coverage. |
| Favorable rocks and structures |
Ocher, kaolin deposits rest on limestone and carbonate (Burt, 1931). The unconsolidated deposits sit above bedrock but below glacial deposits. MRDS lists the Kinney-Cobble Mn mines (Mitchell ore bed iron mine) (Burt, 1931). Occurs above dolostone in the Forestdale Formation (Ratcliffe and Walsh, 1998). |
| Deposits |
Kinney-Cobble Mn mines (MRDS dep_id: 10100544). |
| Evidence from mineral occurrences |
MRDS. |
| Geochemical evidence |
See Watts (1990); stream sediment geochemistry shows stratabound Fe + Mn residual deposits extend the length of the Glens Falls quadrangle. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
Unknown. |
| Comments |
Iron ore very rich in manganese (Burt, 1931, p. 124). |
| Cover thickness and description |
Variable limited cover and glacial cover estimated at 0-50 feet (Burt, 1931). Kaolin, ocher, lignite and ore deposits are up to 175 feet thick. |
| Authors |
Gregory J. Walsh, Bernard E. Hubbard. |
| New data needs |
Modern geochemical assay. |
| Geologic mapping and modeling needs |
Mapped locally at 1:24,000 (Ratcliffe and Walsh, 1998). |
| Geophysical survey and modeling needs |
High resolution aeromagnetic and aeroradiometric coverage. |
| Digital elevation data needs |
Lidar adequate. |
