The mineralogical characteristics of copper pectolite samples from Dominican Republic were studied and analyzed. The observation under microscope shows that copper pectolite has a dense and fibrous structure, with the fiber length being about 0.01～0.02 mm. X-ray diffraction determination shows that there exists no other mineral phase except pectolite in the copper pectolite sample, which is in agreement with the result of energy disperse spectrum analysis. However, no conspicuous difference is observed in infrared spectra and ultraviolet-visible absorption spectra among the copper pectolite samples with different color tones.