Webster's Online Dictionary
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Specialty Definition: FAIRFIELDITE

DomainDefinition
MiningA. A triclinic mineral, Ca2 (Mn, Fe)(PO4)2.2H (sub 2) O; transparent pearly to subadamantine; in granite pegmatites in Fairfield County, CT, as an alteration of dickinsonite and a pseudomorph after rhodochrosite.b. The mineral group cassidyite, collinsite, fairfieldite, messelite, and roselite-beta. Syn: leucomanganite. (references)

Source: compiled by the editor from various references; see credits.

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