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Mineralogical and petrographic studies on the epidotized monzogabbro outcrop observed at Canzoccoli (Predazzo) are reported. The clinopyroxenes of the monzogabbro are chloritized, the feldspars are rounded and enclosed in a chlorite-calcite-epidote matrix. The epidote is also enriched in veins or in big lenticular masses. The optical and crystal-chemical study defines the epidote as a Ps = 24% term. The colour of the epidote mineral tends to darker tones the higher the Fe-content. A genetic mechanism...
Scapolite occurs as large idiomorphic crystals forming pseudoradiating aggregates in veins in the monzonitic rocks. It is associated with zeolites (analcime, natrolite and scolecite), calcite, ferroan chlorites, K-feldspar, sphene and apatite. The samples were examined by x-ray diffraction and I.R. absorption spectroscopy. The results define the mineral as a scapolite term, containing and OH as essential constituents, Cl and as trace. The relationships between physical data and composition...
Scapolite occurs as large idiomorphic crystals forming pseudoradiating aggregates in veins in the monzonitic rocks. It is associated with zeolites (analcime, natrolite and scolecite), calcite, ferroanchlorites, K-feldspar, sphene and apatite. The samples were examined by optical methods and chemical tests. The results define the mineral as a scapolite term, containing and OH as essential constituents and Cl and as trace.
Research on a K-rich scapolite, containing OH and as anionic constituents was carried out to correlate the thermal behaviour and the heating effects on chemical composition, x-ray and I.R. absorption results. The scapolite-plagioclase stability relations at high temperatures are discussed.
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