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Old Mine, Chester Emery Mines, Chester, Hampden Co., Massachusetts, USA

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Latitude & Longitude (WGS84): 42° 16' 45'' North , 72° 59' 17'' West
Latitude & Longitude (decimal): 42.27936,-72.98809


This mine is the most extensive of the mines in the group, and it is the mine which has received the most attention from collectors and scientists over the years. Nearly all of the mineralogical studies which have been undertaken in regards to these mines have been done using samples from the Old Mine - very few samples from any of the other mines have been analyzed.

Of note, when walking along the river bank at this location, you are actually walking on an old railroad spur that once served the mines at this location. It branched off of the Boston & Albany RR main line, which today is operated by CSX.

Mineral List


25 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Dapingian - Tremadocian
467.3 - 485.4 Ma
Moretown Formation

Age: Ordovician (467.3 - 485.4 Ma)

Stratigraphic Name: Moretown Formation

Description: Light-greenish-gray to buff, fine-grained, pinstriped granofels and schist.

Comments: Part of Rowe-Hawley Zone (Ordovician and Older Rocks). Early Ordovician age from zircons (479+/-8 Ma) constrains the age of the previously undated Moretown Formation to Early Ordovician or older. Moretown had been interpreted as Middle Ordovician based on correlations with the Beauceville Formation of southern Quebec and the Missisquoi Formation of VT (Karabinos and Williamson, 1994) per MA005.

Lithology: Major:{granofels,schist}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Pratt, J. A. (1906): Corundum and Its Occurrence and Distribution in the United States, USGS Bulletin 269.

Mineralogical Record (1978): 9: 235-242.

Mineral and/or Locality  
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