 | | Journal (article/letter/editorial) | | CARBONATITES FROM A LAMPROPHYRIC DYKE-SWARM, SOUTH WESTLAND, NEW ZEALAND Alan F. COOPER§ and Lorraine A...Geology Department, University of Otago, P.O. Box 56, Dunedin, New Zealand Abstract A late Oligocene – early...Miocene alkali lamprophyre dyke swarm was emplaced in western South Island, New Zealand, during transtensional...transtensional development of the Alpine Fault plate boundary. Intrusive rocks comprise ultramafic and feldspathic...isotope values indicate that all members of the swarm are cogenetic. Efficient fractional crystallization |  | Nosova, Anna A., Sazonova, Ludmila V., Kargin, Alexey V., Dubinina, Elena O., Minervina, Elena A. (2021) Mineralogy and Geochemistry of Ocelli in the Damtjernite Dykes and Sills, Chadobets Uplift, Siberian Craton: Evidence of the Fluid–Lamprophyric Magma Interaction. Minerals, 11 (7) 724 doi:10.3390/min11070724 | Journal (article/letter/editorial) | | scapolite, sodalite, potassium feldspar, albite, apatite and minor quartz ocelli (K-Na-CSO); carbonate–silicate...silicate-carbonate, containing potassium feldspar and phlogopite (K-SCO). The K-Na-CSO present in the most evolved...identical to minerals in ocelli. Carbonate in the K-Na-CSO are calcite, Fe-dolomite and ankerite with...in LREE. The K-SCO was present in the K-rich least-evolved damtjernite. Calcite in the K-SCO has the highest...host rock can be interpreted as follows: (i) the K-Na-CSO are droplets of an alkali–carbonate melt that |  | | Journal (article/letter/editorial) | | mantle [15]. Recent experiments at 2.5–6 GPa in the K-rich carbonate-aluminosilicate systems modeling recycled...at 5.5–6.5 GPa, the partial melting begins with a K-rich dolomite-ankerite melt [16,21]. The carbonate...REVIEW Minerals 22 of 33 of 32 found at 6K-rich GPa, K-rich Ca-Mg-Fe carbonate and conjugate aluminosilicate...at that 6 GPa, Ca-Mg-Fe carbonate and conjugate K-rich K-rich aluminosilicate (CO2 ◦ C [16] bearing phonolite)...phonolite and K-rich carbonate (Table 1). The second one, L(S), corresponds 2 bearing phonolite and K-rich carbonate |
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