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Hornblende from
Granite Street Quarry (Milk Row Quarry), Somerville, Middlesex Co., Massachusetts, USA

Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:Wadsworth, M. E. (1877): The Intrusive Rocks in the Vicinity of Boston (Proceedings of the Boston Society of Natural History, 19:233-237).
Data
Mineral Data:Click here to view Hornblende data
Locality Data:Click here to view Granite Street Quarry (Milk Row Quarry), Somerville, Middlesex Co., Massachusetts, USA
Mineral and/or Locality  
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