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Barker Hill Quarry (Townsend Quarry; Rusk Quarry), Townsend, Middlesex Co., Massachusetts, USA

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Detailed Mineral List:

Albite var: Oligoclase-Albite
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).








'Allanite' ?
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).








'Apatite'
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).








Biotite
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).








'Chlorite Group'
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).








Magnetite
Formula:	Fe²⁺Fe³⁺₂O₄
Reference:	Rocks & Min.: 13:245.; Harvard Museum spec. # 92325







Microcline
Formula:	KAlSi₃O₈
Reference:	; Rocks & Min.: 13:245.







Pyrite
Formula:	FeS₂
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).







Quartz
Formula:	SiO₂
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).







Rutile ?
Formula:	TiO₂
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).







Zircon
Formula:	ZrSiO₄
Reference:	Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England. (USGS Bulletin 470).

11 entries listed. 6 valid minerals.

References

Rocks & Minerals (1938): 13: 245.

Dale, T. Nelson (1910). Supplementary Notes on the Commercial Granites of New England; USGS Bulletin 470.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Jobs in Massachusetts, USA 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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