The beautiful crystallized datolite specimens which are found in all collections labeled “Westfield, Mass.,” have come from the Lane quarries, midway between Springfield and Westfield. These quarries, which are three in number, are located in the Middle or Holyoke trap sheet which forms a long narrow elevation locally known as the Holyoke “Range.” The locality is best reached from the Springfield-Westfield trolley line by way of the road which runs north past the State Sanitarium, the northernmost quarry being a little over a mile from the trolley line. The writer recently visited this locality and was able, with a little search, to obtain a number of specimens of very fine datolite. This locality is easily accessible and should, at any time, amply repay any one of mineralogical bent who spends a few hours seeking specimens.

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