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MD-249302
Falcondoite, Willemseite
Small Cabinet, 5.4 x 4.0 x 0.8 cm
Loma Peguera, Bonao, Monsenor Nouel Province, Dominican Republic
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Falcondoite and willemseite are very rare nickel, magnesium silicates found in strange ultramafics - read a serpentinized harzbergite massif or an obducted ophiolite at a plate collision of oceanic crust with continental crust. The locality is in the Dominican Republic, which is the Type Locality for falcondoite. This fine, bright green thin crust is mostly scalloped, green falcondoite, with just a bit of blocky, darker, olive willemseite on the right edge, center. Very rarely available.