 | | Journal (article/letter/editorial) | | Rare-Metal Mineralization in the Ambohimirahavavy Alkaline Complex, Madagascar Guillaume Estrade,1 Stefano...0E8 Abstract The Cenozoic Ambohimirahavavy alkaline complex in Madagascar consists of several syenitic...calc-silicate minerals such diopside and andradite-grossular, forms a rare example of skarn resulting from...relative importance of these two processes. Skarns in alkaline system offer an important opportunity to evaluate...Sinclair, 1998). The Ambohimirahavavy alkaline complex, located in the northwest of Madagascar, has been the |  | Fitros, Michalis, Tombros, Stylianos F., Kokkalas, Sotirios, Kilias, Stephanos P., Perraki, Maria, Skliros, Vasilios, Simos, Xenofon C., Papaspyropoulos, Konstantinos, Avgouropoulos, George, Williams-Jones, Anthony E., Zhai, Degao, Hatzipanagiotou, Konstantin (2020) REE-enriched skarns in collisional settings: The example of Xanthi's Fe-skarn, Rhodope Metallogenetic Massif, Northern Greece. Lithos, 370. 105638pp. doi:10.1016/j.lithos.2020.105638 | Journal (article/letter/editorial) | | typically linked to carbonatites and ultra-alkaline to alkaline and peralkaline intrusives at re intraplate...Pre-proof 2.2. Xanthi’s intrusives The Xanthi plutonic complex comprises a laccolith which intruded both the NSZ...Magnetite-Hematite buffer (MH) () boundary. A complex network of zoned pegmatite, rare lamprophyre, aplogranite...of grossular-to-andradite (e.g., Adr50-55Grs~45, Adr50-55Grs30-35Prp8) and the rims of grossular (e.g... syenite, tonalite, granodiorite, granite and alkaline granite aligned on the subalkaline-midalkaline |  | | Journal (issue) | | with giant fluid inclusion • Grandidierite from Madagascar • Mexican demantoid from new deposits • New natural-color...green chalcedony • Rubies from new deposit in Madagascar • Plastic imitation of golden coral • Conference...from a new deposit in Zahamena National Park, Madagascar. There are also reports from the 2015 Geological...the Y-site, giving uvarovite (Ca3Cr2Si3O12), grossular (Ca3Al2Si3O12), or andradite (Ca3Fe23+ Si3O12)...color-change behavior of pyrope-spessartine garnets from Madagascar (Krzemnicki et al., 2001; Schmetzer et al., 2009) |  | | Book (chapter) | | categories have been arranged from simple to more complex. 1. Paramorphs. Paramorphs are the result of polymorphism...mineralogy has been carefully studied and found to be a complex mixture of mostly rare secondary copper minerals...b. Molds (of animals or plants). c. Casts. 8. Complex combinations of the above. There is very little...deposits, the sequence of events can be quite complex, but unraveling that sequence can be quite valuable...fluid. The pentlandite to violarite reaction is complex, contingent upon a great number of solution parameters |  | | Book | | categories have been arranged from simple to more complex. 1. Paramorphs. Paramorphs are the result of polymorphism...mineralogy has been carefully studied and found to be a complex mixture of mostly rare secondary copper minerals...b. Molds (of animals or plants). c. Casts. 8. Complex combinations of the above. There is very little...deposits, the sequence of events can be quite complex, but unraveling that sequence can be quite valuable...fluid. The pentlandite to violarite reaction is complex, contingent upon a great number of solution parameters |  | | Journal (article/letter/editorial) | | deposition and intrusion of shoshonitic to high K, calc-alkaline magmas across the 1886 ± 8 Ma sedimentary basin...Bear magmatic zone, shoshonitic to high K calc-alkaline andesitic to rhyolitic volcanic and volcaniclastic...assemblages in which clinopyroxene and/or garnet of the grossular-andradite (granditic) or almandine series predominate...in the Cole sector occur in the Cole volcanic complex that includes volcanic and volcaniclastic rocks...assemblage replaced rocks of the Cole volcanic complex. This assemblage is overprinted by epidote-bearing |  | | Book | | geology The Saint-Andre carbonatite complex The Oka carbonatite complex Mont Royal Mont Saint-Bruno (Montarville)...fully understand the petrogenesis of the igneous complex. In nepheline syenite and sodalite syenite pegmatites...concerning the origin of the Monteregian Hills alkaline province, and a brief description of each member...used interchangeably for the mountain, the alkaline complex, and the eponymous town situated at the foot...From the syenites, he identified such signature alkaline minerals as eudialyte, a lavenite-like mineral |
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