FLORESTA SANDSTONE (F) – (Classification: sedarenite)
Sedarenite that consists of abundant carbonated grains and quartz (monocrystalline, polycrystalline and chert grains). Carbonates are mainly subrounded, medium size (250-500 µm) and consist of intraclastic grains (mudstone texture), sparitic crystals and dolomite. Quartzs are mainly subrounded and subangular shaped, angular occasionally, and sizes varies in the range of medium and very fine grain (62-500 µm). Large packing and dissolution voids are common, cement is very scarce and depositional structures are not recognizable.
MOLEANO LIMESTONE (C) – (Classification: intrasparitic – pelsparitic limestone according to Folk (1959) or grainstone according to Dunham (1962).
Limestone that consists of intraclasts, bioclasts, pellets and sparite crystals. Intraclasts show a micritic texture, are subrounded-rounded shaped and the size varies in the range of coarse sand and microconglomerate (500–2000 µm). Bioclasts are mainly fragments of bivalves and corals which occasionally show internal sparitic recrystallization. Pellets are the dominant allochemical component, size varies in the range of fine – medium sand (125–500 µm) and always show a micritic internal texture. Sparite crystals totally cement allochemical components.
Both marbles show a very well developed granoblastic texture with equidimensional idiomorphs leucocratic crystals. Porosity is null and occasionally is possible to identify opaque minerals which are more common in the Macael type. Most important difference between both types is crystal size. Italian marble crystals are smaller and better shorted (103 – 517 µm) than Macael (164 – 1790 µm).
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