Description
Brilliant jet-black babingtonite on calcite partially coated with a species yet to be defined (phrenite or wavellite), from Lane & Son quarries, Westfield, Massachusetts, USA.
Babingtonite is a mineral species, from the silicate group, inosilicate subgroup, with the formula Ca₂Fe³⁺Si₅O₁₄.
Specimen from the collection of René Hubin, Belgian mineralogist.
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