Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Andalusite from
New York - Susquehanna & Western Railroad tunnel, Edgewater, Bergen County, New Jersey, USA


Locality type:Tunnel
Classification
Species:Andalusite
Formula:Al2(SiO4)O
Comments:Occurs in hornfels at contact with traprock (Palisades Diabase).
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Andalusite data
Locality Data:Click here to view New York - Susquehanna & Western Railroad tunnel, Edgewater, Bergen County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:79217
Long-form Identifier:1:3:79217:4
GUID (UUID V4):0
References
The Minerals of NYC & Its Environs, NY Min. Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 71.
 
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