Calciomicrolite EDS spectrum
White Rocks Quarry, White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
Peter Cristofono and Tom Mortimer of Micromounters New England obtained an EDS spectrum of a brown crystal from this specimen. The results here are within the calciomicrolite series (Ca,Na)2(Ta,Nb)2O6(Z), which can have F, O or OH in the Z position. Unfortunately, EDS is not able to reliably differentiate between them. This spectrum suggests the ...