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Rockside Quarry (Mine Hill Quarry), Mine Hill (Ore Hill), Roxbury, Litchfield Co., Connecticut, USA

Latitude: 41°34'15"N
Longitude: 73°20'16"W
Situated at the eastern base of Mine Hill and now part of the Roxbury Land Trust Mine Hill Preserve, it is separate from the "upper quarry" which is on the hill to the southwest. According to Dale and Gregory (1911) this dimension stone quarry began operations in 1890, though Pawloski (2006) mentions quarrying as early as 1837. It closed in 1935, but was briefly re-opened in 1952 by Charles Showalter, who moved his operations to the upper quarry. Bell and Mayerfeld (1982) mapped the area and show that one of the numerous siderite-rich veins found on the hill intersects the quarry. Dale and Gregory (1911) describe it thus:

"Within the second heading from the south end is a mineral vein up to 8 inches thick, which tapers out horizontally at a point 200 feet from the east side of the quarry. It contains pyrite, chalcopyrite, siderite, galenite, and secondary quartz coating crystals of siderite. Similar veins occur in the first and third headings. These are evidently all related to the larger siderite vein which was formerly mined on the hill and to which it owes its name."

The minerals listed are either from the veins or are rock forming or accessory minerals in the gneiss.

Mineral List

Albite
Almandine
Anatase
Biotite
Bismuth
Bismuthinite
Bismutite
Brookite ?
Calcite
Chalcopyrite
Copiapite
Fluorapatite
Fluorite
Galena
Kaolinite
Limonite
Microcline
Muscovite
Orthoclase
Pyrite
Quartz
Quartz
var: Amethyst

var: Smoky Quartz
Rutile
Schorl
Siderite
Sphalerite
Zircon


28 entries listed. 24 valid minerals.

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References

Dale, T. Nelson and Herbert E. Gregory. (1911): The Granites of Connecticut. USGS Bulletin 484. pp. 70-71.

Januzzi, Ronald. (1959): The Minerals of Western Connecticut and Southeastern New York State. The Mineralogical Press, Danbury, Connectcut.

Schooner, Richard. (1961): The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut.

Hull, Daniel R. (1966): Bewitched Mine Hill, The Silver-Lead-Iron Mine of Roxbury, Connecticut. The Old Woodbury Historical Society, Woodbury, Connecticut.

Januzzi, Ronald. (1976): Mineral Localities of Connecticut and Southeastern New York State. The Mineralogical Press, Danbury, Connectcut.

Bell and Mayerfeld (1982): Time and Land: The Story of Mine Hill (Roxbury Land Trust; and Yale School of Forestry and Envirnomental Studies).

Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue), Vol. 70, No. 6, p. 399.

Pawloski, John A. (2006). Connecticut Mining (Mt. Pleasant, SC: Arcadia Publishing) pp. 79-81.

External Links

Bell and Mayerfeld (1982) can be found here - http://www.roxburylandtrust.org/minehill.html

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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