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Sky Ridge railroad cut, Hawleyville, Newtown, Fairfield Co., Connecticut, USA

Byssolite
Sky Ridge railroad cut, Hawleyville, Newtown, Fairfield Co., Connecticut, USA

Photo: 2011 Harold Moritz
Latitude: 41°25'35"N
Longitude: 73°21'36"W
A prominent railroad cut on the New York and New England Railroad line through Sky Ridge near Hawleyville (Lapham, 1957) where "pegmatites" of clinochlore and epidote with orthoclase, albite and quartz bordered by muscovite are embedded in diorite. An alteration zone of pink orthoclase surrounds the pegmatites. Pectolite, stilbite and apophyllite formed in fractures.

Note: This is an active railroad line.

Mineral List

Albite
'Amphibole Group
var: Byssolite'

'Apatite'
'Apophyllite'
Calcite ?
Chalcopyrite ?
Clinochlore
Copiapite ?
Epidote
Fluorapatite
Galena ?
'Garnet'
Gypsum ?
'Heulandite' ?
Melanterite ?
Muscovite
Natrolite ?
Opal
var: Opal-AN ?

Orthoclase
Pectolite
Pyrite ?
'Pyroxene Group' ?
Pyrrhotite ?
Quartz
Rutile
Staurolite ?
'Stilbite'
Titanite
Zoisite


29 entries listed. 20 valid minerals. 1 erroneous literature entry.

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References

Agar, William M. and Earl Emendorfer. (1937): Manganiferous Prochlorite from Hawleyville, Conn., American Journal of Science, 34, pp. 77-80.

Lapham, Davis M. (1957): Epidote from Hawleyville, Connecticut. American Mineralogist. Vol. 42, No. 1-2, pp. 62-72.

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

Januzzi, Ronald. E. (1994): Mineral Data Book - Western Connecticut and Environs. Mineralogical Press, Danbury, Connecticut.

Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue), Vol. 70, No. 6, pp. 397.

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. 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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