An iron mine in goethite (limonite) ore located 1½ miles (2 km) NE of Millerton. Owned initially by C. S. Maltby, then Thomas Iron Co. Started originally in 1750 and closed in 1891. Workings feature a pit 600 feet long by 400 feet wide.

This pit was last operated by the Thomas Iron Company of Lehigh Valley, Pennsylvania, and abandoned in 1891. It is now filled with water to a depth of about one hundred feet, so that only the upper walls are exposed view. The data regarding the now covered portions were obtained from Mr. E. B. Manning, formerly manager of the mine. The pit is nearly circular and the interest of the geologist centers in the southeast wall which is shown in section in Fig. 14. A sketch plan of the mine is given in Fig. 15.

At least three small faults appear in the southeast wall of the mine and bring up the dolomite and overlying ore in step-like succession as indicated in Fig. 14.

The middle ore body is distinctly wedge-shaped, and is cut off by a fault exposed in the wall. The strike of this fault is nearly west.
From the north side of the pit the main body of ore was said to have followed a direction N. 70° W. along the strike, and to dip about 45° N.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Goethite

ⓘ 'Limonite'

1 valid mineral.

Detailed Mineral List:

ⓘ Goethite

Formula: Fe³⁺O(OH)

References:

Robinson, George W., Chamberlain, Steven C. (2007) Gazetteer of Major New York State Mineral Localities. Rocks & Minerals, 82 (6) 472-483 doi:10.3200/rmin.82.6.474-483

ⓘ 'Limonite'

References:

New York State Museum Bull. 223,224, Newland, David H. (July-August 1919), The Mineral Resources of the State of New York: 133.

New York State Museum Bull. 223,224, Newland, David H. (July-August 1919), The Mineral Resources of the State of New York: 101.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	Fe³⁺O(OH)
Unclassified
ⓘ	'Limonite'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Goethite	Fe³⁺O(OH)
O	Oxygen
O	ⓘ Goethite	Fe³⁺O(OH)
Fe	Iron
Fe	ⓘ Goethite	Fe³⁺O(OH)

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Appalachian BasinBasin
Laurentides DomainPassive Margin

USA

Salisbury Mining DistrictMining District

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References

Putnam. (1880). Mining Industries of the U. S. Tenth Census: 15.

[1]Hobbs, William Herbert. (1907), The Iron Ores of the Salisbury District of Connecticut, New York and Massachusetts. Economic Geology: 2: 153-181.

New York State Museum Bull. 223,224, Newland, David H. (1919), The Mineral Resources of the State of New York: 133, 137.

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