Corsi Collection of Decorative Stones

Page 10 of 10, showing 901 - 1000 of 1000 stones.
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OUMNH number Name and quarry location Geological description
OUMNH number Name and quarry location Geological description
901stone 901 Marmo salino dell'Elba, from the island of Elba, Livorno, Tuscany, Italy Fairly coarse-grained calcite marble; bands of sulphide/oxide impurities evident on side of specimen.
902stone 902 Probably giallo antico from Chemtou, Tunisia, but possibly Giallo di Siena, Siena yellow from Monte Arrenti near Sovicille, Siena, Tuscany, Italy Very fine-grained calcite marble. A fractured, stylolitised, metamorphosed fossiliferous biomicrite limestone. Veins and voids are calcite-filled, and there are abundant small black manganese oxide dendrites.
903stone 903 Rosso antico brecciato, from Kiyi Kislacik, Milas, Mugla Province, Turkey Breccia of calcite marble clasts in a hematitic matrix.
904stone 904 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Fine-grained compact limestone, partially recrystallised, with red iron oxides concentrated in abundant stylolites giving a characteristic reticulated appearance often seen in this stone.
905stone 905 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Fine-grained compact limestone breccia of pink clasts. There are abundant stylolites, and later fractures are filled with white calcite.
906stone 906 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Partially recrystallised bioclastic limestone with crinoid and other debris, stylolites, and spar-filled fractures.
907stone 907 'Portasanta', locality unknown Sheared limestone/marble breccia with extensive stylolite development.
908stone 908 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Fine-grained recrystallised limestone with stylolites and spar-filled fractures.
909stone 909 probably Africano, from Sigacik (ancient Teos), Izmir Province, Turkey Sheared, recrystallised limestone breccia with some relic crinoid debris and abundant stylolites.
910stone 910 perhaps breccia corallina, from Verzirhan, Bilecik,Turkey Heavily sheared and recrystallised limestone breccia, almost entirely altered to fine-grained marble.
911stone 911 Cipollino verde, locality unknown Heterogeneously deformed very coarse-grained metagabbro with ophitic texture locally preserved in lenticular low-strain domains.
912stone 912 probably marmo Greco scritto, probably from Capo de Garde, Annaba (Hippo Regius), Algeria. A tectonised calcite marble, with fine and medium-grained graphite-rich bands; perhaps originally a marble breccia.
913stone 913 Africano, from Sigacik (ancient Teos), Izmir Province, Turkey Tectonic breccia-conglomerate of poorly-sorted grey-brown biospar limestone clasts in a microspar matrix rich in red, brown and yellow ferruginous matter (oxidised chlorite). The same colours abundant stylolites. Cavities are filled with sparry calcite.
914stone 914 Africano, from Sigacik (ancient Teos), Izmir Province, Turkey Tectonic breccia-conglomerate of poorly-sorted largely recrystallised limestone clasts in a sparry calcite matrix coloured dark brown by included ferruginous matter (oxidised chlorite). It has abundant stylolites, some are white, other iron-stained orange-brown. Fractures are filled with calcite.
915stone 915 Africano, from Sigacik (ancient Teos), Izmir Province, Turkey Tectonic breccia-conglomerate of poorly-sorted limestone and metamorphic clasts, the latter rich in green iron silicates. The matrix is green, chlorite-rich.
916stone 916 Fior di pesco (fior di persico), from Eretria, Euboea, Central Greece Triassic tectonite; a sheared marble with late-stage fractures and solution seams. Dendritic manganese oxides emanate from fractures.
917stone 917 Pavonazzetto, from Iscehisar (Synnada), Afyonkarahisar Province, Turkey Sheared marble breccia.
918stone 918 Pavonazzetto, from Iscehisar (Synnada), Afyonkarahisar Province, Turkey Sheared breccia of marble clasts.
919stone 919 almost certainly Vytina black, from Vytina, Arcadia, Peloponnese, Greece Fine-grained black limestone with white fragments of rudist bivalves; Cretaceous age.
920stone 920 almost certainly Vytina black, from Vytina, Arcadia, Peloponnese, Greece Fine-grained black limestone with white shells of rudist bivalves; Cretaceous age.
921stone 921 Lumachella di San Vitale, from the province of Verona, Veneto, Italy Jurassic limestone; matrix is fossiliferous micrite/microspar with molluscan debris. The large white recrystallised shells are of 'Lithiotis' bivalves.
922stone 922 Chiampo perlato, from Chiampo area, Vicenza, Veneto, Italy Middle Eocene nummulitic limestone, note solution-modified and stylolized fractures.
923stone 923 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria. Compact banded travertine composed mainly of calcite heavily tinted red by hematite.
924stone 924 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria. Compact banded travertine composed mainly of fine-grained calcite almost entirely coloured red by hematite, the result of cyanobacterial action in the hot spring water.
925stone 925 Alabastro ciliegino, locality unknown Compact banded travertine composed mainly of fine-grained calcite, with some bands particularly rich in included red hematite. Light brown areas are wax filler.
926stone 926 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria. Recrystallised compact banded travertine, composed of mainly granular ferruginous calcite.
927stone 927 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria, or perhaps alabastro ciliegino, locality unknown. Compact banded travertine composed of white fine-grained calcite, with coarse-grained areas patchily rich in iron oxides, mainly hematite.
928stone 928 Alabastro a tartaruga, from Montauto, Castelfiorentino, Pisa, Tuscany, Italy Compact travertine composed of fine acicular calcite crystals.
929stone 929 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria. Compact banded travertine composed of coarse-grained calcite, some bands are rich in iron oxides, dendritic growth most evident on the sides of the sample.
930stone 930 Alabastro fortezzino, probably from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. Fine-grained compact travertine with some slender orange bands, hosted in a nummulitic limestone.
931stone 931 Alabastro antico, locality unknown Compact banded calcite travertine, heavily contaminated with grains of the host limestone.
932stone 932 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria. Very ferruginous compact banded calcite travertine.
933stone 933 probably Egyptian alabaster, alabastro cotognino, from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. Compact banded travertine composed of fairly coarse-grained calcite, extensively iron-stained and with red ferruginous veins.
934stone 934 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria. Compact banded calcite travertine coloured by iron oxide, with dendritic growths of manganese oxides.
935stone 935 Alabastro antico, alabastro verde, locality unknown Compact travertine composed of coarse-grained calcite.
936stone 936 Alabastro antico, locality unknown Limestone breccia. Calcite travertine clasts, and a few gastropod shells, in a micritic (peloidal in places) matrix.
937stone 937 Alabastro antico, locality unknown Compact finely banded calcite travertine, wide paler coloured bands have a more porous texture and contain trapped filler.
938stone 938 Alabastro di Palestrina, from Palestrina, Rome, Lazio, Italy Compact banded travertine composed of acicular calcite crystals, with a ferruginous micritic infill between grains. Cavities in the surface are filled with brown wax, intensifying the colour a little.
939stone 939 Alabastro di S. Felicita, from Santa Felicita, Capo Circeo, Latina, Lazio, Italy A very coarse-grained compact banded calcite travertine, of a pale golden yellow colour.
940stone 940 Alabastro a tartaruga, from Montauto, Castelfiorentino, Pisa, Tuscany, Italy or perhaps Iano di Montaione, Florence, Tuscany, Italy Compact travertine composed of very fine acicular calcite crystals.
941stone 941 Pietra perlea di Trento, from Trent, Trentino-Alto Adige, Italy Massive coarsely crystalline calcite with iridescence off incipient cleavages. Reddish brown in places, ferruginous matter coating some incipient cleavage planes.
942stone 942 Tartaro di Tivoli, from Tivoli, Rome, Lazio, Italy Compact banded travertine composed of fibrous to very finely acicular calcite crystals, perhaps originally aragonite.
943stone 943 Breccia rossa, locality unknown Metamorphosed (tectonised) limestone breccia with calcite/hematite-filled fractures, solution seams and stylolites.
944stone 944 Breccia corallina, from Verzirhan, Bilecik,Turkey Weakly metamorphosed limestone breccia with stylolitised clast boundaries, and with small cavities filled with sparry calcite.
945stone 945 Breccia pavonazza bruna o dal suffragio, locality unknown Polymict breccia-conglomerate. Smaller clasts in matrix are realatively rounded and ferruginous reddish-brown, and all clasts are have ferruginous mainly stylolitic clast boundaries Voids are filled with sparry calcite. A few clasts contain bright green, 'fushsite' (chromium-bearing muscovite).
946stone 946 Breccia traccagnina, breccia Capitolina, locality unknown Polymict limestone conglomerate.
947stone 947 Breccia di Settebasi, from Isle of Skyros, Sporades, Central Greece Sheared limestone conglomerate, metamorphosed to marble.
948stone 948 Broccatellone, from Verzirhan, Bilecik,Turkey Tectonised limestone breccia-conglomerate.
949stone 949 Breccia Medicea or 'Africano', from Seravezza, Lucca, Tuscany, Italy Tectonised polymict breccia-conglomerate of limestone and marble clasts with solution-modified clast contacts.
950stone 950 Breccia corallina, from Verzirhan, Bilecik,Turkey Tectonic brecciated limestone breccia, heavily fractured with stylolites and solution-modified clast boundaries.
951stone 951 Breccia bigia, locality unknown Well-sorted polymict limestone conglomerate.
952stone 952 Breccia di Siena, from Siena, Tuscany, Italy Sheared polymict limestone conglomerate. The shearing may have been synsedimentary: Solution seams and stylolites are pervasive. Perhaps a sheared debris flow.
953stone 953 Breccia persichina, perhaps breccia Medicea, from Stazzema or Seravezza, Lucca, Tuscany, Italy Sheared, metamorphosed solution-modified limestone with stylolites, not entirely recrystallised to marble, fossils are still widely evident.
954stone 954 Fior di pesco Apuano from Stazzema, near Seravezza, Lucca, Tuscany, Italy Marble breccia; a sheared and tectonised limestone conglomerate.
955stone 955 Fior di pesco Apuano, from Stazzema, near Seravezza, Lucca, Tuscany, Italy Heavily fractured calcite marble breccia; a sheared and tectonised limestone conglomerate.
956stone 956 Pietra paesina, from Tuscany, Italy Micritic limestone with scattered tiny bioclasts, coarser-grained intraclasts, and stylolites. It is heavily fractured, the microfracture-constrained iron-staining giving a 'paesina' effect. Abundant dentritic manganese oxides are concentrated in, or emanate from some intraclasts, stylolites and veins. It is almost certainly from the Cretaceous to Eocene Alberese Formation.
957stone 957 Pietra paesina, from Trent, Trentino-Alto Adige, Italy Heavily fractured micritic limestone with abundant tiny bioclasts. Ferruginous staining shows typical Liesegang rings, and is constrained by sealed microfractures giving the 'paesina' effect seen best on sides of sample. Dendritic manganese oxides emanate from fractures. It is almost certainly from the Cretaceous to Eocene Alberese Formation.
958stone 958 Pietra paesina, from Civitavecchia, Rome, Lazio, Italy Heavily fractured micritic limestone with abundant tiny bioclasts, stylolites and orange and white sparry calcite-filled fractures. Ferruginous staining is constrained by sealed microfractures giving the 'paesina' effect. There are minor dendrites of manganese oxides. It is almost certainly from the Cretaceous to Eocene Alberese Formation.
959stone 959 Pietra paesina, from Civitavecchia, Rome, Lazio, Italy Heavily fractured micritic limestone with sparry calcite-filled fractures and stylolites. Ferruginous staining is constrained by the fractures giving the 'paesina' effect. It is almost certainly from the Cretaceous to Eocene Alberese Formation.
960stone 960 Pietra paesina, from Civitavecchia, Rome, Lazio, Italy Heavily fractured micritic limestone with sparry calcite-filled fractures. Ferruginous staining is constrained by the fractures and shows banded Liesegang rings, together giving the 'paesina' effect. It is almost certainly from the Cretaceous to Eocene Alberese Formation.
961stone 961 Arenaria antica, locality unknown Coarse-grained bio calcarenite, with algal, foram, molluscan grains dominant. Matrix is colourless calcite.
962stone 962 Verde antico, from Larissa, Thessaly, Greece Breccia with clasts mainly of serpentinite/ophicalcite, and a few of marble.
963stone 963 Serpentina di Santa Caterina, from Santa Caterina, island of Elba, Livorno, Tuscany, Italy Serpentinite, finely brecciated and veined with calcite.
964stone 964 Corsica, from Corsica, France Metagabbro. A weakly metamorphosed gabbroic pegmatite, with green diopside (pyroxene) and brighter green aggregates of acicular actinolite-tremolite (amphibole) crystals. Some black grains of an oxide mineral are present.
965stone 965 Serpentina di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy Perhaps a serpentinised lherzolite. Large pale crystals look like enstatite as porphyroclasts in a deformed and recrystallised matrix.
966stone 966 Serpentina di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy Serpentinite with cracked and serpentinised pseudomorphs of olivine and pink bastitised pyroxene. Planar fabric is visible on the sides of the sample, possibly spinel, but now altered. It is permeated by white calcite. The protolith was possibly a spinel peridotite.
967stone 967 Porfido serpentino antico, from Krokees (Levetsova), Laconia, Peloponnese, Greece Deformed porphyritic microdiorite (plagioclase-biotite?), feldspar replaced by aggregates of epidote. There is primary sub-parallel orientation of the porphyroblasts of replaced feldspars.
968stone 968 almost certainly breccia del Taigeto, breccia verde di Sparta, from the area of Krokees (Levetsova), Laconia, Peloponnese, Greece Synsedimentary breccio-conglomerate with clasts of porphyritic andesite.
969stone 969 Breccia verde d'Egitto, breccia universale, from Wadi Hammamat, Eastern Desert, Egypt Metaconglomerate of metamorphic and igneous clasts (pink granite, banded tuff, serpentinite etc) in an epidotised matrix containing chlorite and abundant quartz grains. Cf no.679.
970stone 970 Pudingo di Sabina, from Sabina, Umbria, Italy Polymict conglomerate. Clasts predominantly limestone, but include some silicates including muscovite; a few clasts are pebbles of igneous/metamorphic rocks (granite/gneiss etc.). Matrix is calcarenite with some quartz, coated with yellowish goethite.
971stone 971 Pudingo di Toscana, from Tuscany, Italy Polymict breccio-conglomerate, clasts are largely quartz or chert, and some have inclusions of pyrite. Matrix is calcarenite.
972stone 972 Pudingo delle Alpi, from the Alps Polymict conglomerate with sandstone matrix, clasts: limestone, marble? rock. Fragments possibly volcanic? Some chalcedony. Scattered bivalves and gastropods in the matrix - ?marine
973stone 973 'Verde di Corsica', from Corsica, France is unlikely; perhaps from the Alps Proabably a metagabbro, with trace chromium colouring the pyroxene crystals bright green.
974stone 974 Quarzo erborizzato dell'Elba, from the island of Elba, Livorno, Tuscany, Italy Calcarenite with some grey shell fragments and grains of a black mineral, perhaps schorl.
975stone 975 most probably breccia Medici di Siena, from Siena, Tuscany, Italy Fine-grained calcite marble breccia; a sheared and metamorphosed limestone breccia.
976stone 976 'Diaspro d'Egitto', locality unknown Breccia of green iron-rich prase/aventurine? fragments in a chalcedony matrix. Abundant ferruginous ‘debris’ is in places altered to orange goethitic and red hematitic spherules. A broad colourless chalcedony vein traverses specimen.
977stone 977 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Brecciated orange-brown jasper with fractured agate matrix. Goethite forms inclusions in matrix and full/partial rims to clasts. Dendritic manganese oxides emanate from clast fractures, crystalline quartz fills smaller voids, microcrystalline calcite the larger ones.
978stone 978 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Brecciated red jasper with heavily fractured agate matrix patchily speckled with hematitic inclusions. Diffuse brown goethite forms inclusions and full/partial rims to clasts. Dendritic manganese oxides are common along fractures in matrix, crystalline quartz fills smaller voids, microcrystalline calcite the larger ones.
979stone 979 Diaspro delle Alpi, from the Alps Poorly sorted breccio-conglomerate with very heavily fractured argillaceous siliceous clasts and a calcarenite cement. Brown is filler/polishing compound.
980stone 980 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Partially silicified limestone, voids and fractures filled with agate. Some black calcareous limestone especially on reverse. Dark brown areas are filler.
981stone 981 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Banded jasper, perhaps originally oolitic ironstone or limestone. Cavities and fractures are filled with colourless quartz.
982stone 982 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Brecciated yellow-brown jasper, agate-filled fractures and matrix, voids filled with crystalline quartz.
983stone 983 Porfido delle Alpi, from the Alps Quartz porphyry. Pale reddish brown rock. Subhedral phenocrysts of glassy quartz up to 3mm and pale brown alkali feldspar set in very fine-grained pale brown groundmass with occasional ferromagnesian silicate mineral and black oxide.
984stone 984 Porfido delle Alpi, from the Alps Quartz porphyry. Greyish brown colour. Prominent white subhedral feldspar phenocrysts, some showing compositional zoning with lamellar-twinned interiors and untwined rims. Rounded glassy quartz phenocrysts and prismatic dark brown ferromagnesian mineral, probably amphibole. All set in very fine-grained pale brown groundmass. Similar in mineralogy to 0983, but with different proportions of feldspar and quartz phenocrysts.
985stone 985 Porfido di Siberia, from Siberia, Russia Plagiophyric micro-diorite. Laths of white plagioclase, frequently in clusters, and dark green subhedral amphibole set in fine-grained matrix of probably similar mineralogy.
986stone 986 Granito antico, possibly granito verde fiorito di bigio from Wadi Umm Balad, near Gebel Dokhan, Eastern Desert, Egypt Quartz diorite.
987stone 987 Granito antico, locality unknown Granodiorite, pinkish potash feldspar.
988stone 988 Granito antico, locality unknown Coarse-grained hornblende biotite granite with large megacrysts of salmon pink potash feldspar.
989stone 989 Gabbro eufotide, from Wadi Maghrabiya, Eastern Desert, Egypt Weakly metamorphosed coarse-grained gabbro with a subtle schiller to the plagioclase feldspar.
990stone 990 Granito antico, possibly granito verde fiorito di bigio from Wadi Umm Balad, near Gebel Dokhan, Eastern Desert, Egypt Quartz diorite.
991stone 991 Granito antico, locality unknown Biotite granite. Pink, medium-grained. Pink alkali feldspar, white plagioclase and glassy quartz. Faint foliation.
992stone 992 Granito rosso antico, sienite, possibly from between Aswan and Shellal District, Nile Valley, Egypt Fine-grained hornblende biotite granite-granodiorite.
993stone 993 Granito antico, locality unknown Fine-grained hornblende biotite granodiorite; some mafic grains included within quartz.
994stone 994 Granito antico, locality unknown Fine-grained hornblende biotite rapakivi granite with large pink perthitic phenocrysts of potash feldspar rimmed with colourless plagioclase.
995stone 995 Granito antico, locality unknown Porphyrtic trachyte. Abundant feldspar phenocrysts up to 15mm showing complex twinning, concentric zoning of inclusions and a tendency to cluster. Sparse microphenocrysts of amphibole substantially altered to rusty brown mineral (also occurs in the white feldspars). Possible rare quartz phenocrysts. Groundmass of milky-white and pale grey feldspars showing tendency to fluidal structure round phenocrysts. Occasional angular (?cognate) xenoliths of fine-grained equigranular rock consisting of feldspar and altered amphibol;e.
996stone 996 Granito antico, very possibly granito bianco e nero gabino, from Bir Umm Fawakhir, near Wadis Hammamt and el-Sid, Eastern Desert, Egypt Granodiorite.
997stone 997 Granito di Firenze, from Florence, Tuscany, Italy Hornblende biotite granite, porphyritic, with large megacrysts of potassium feldspar.
998stone 998 Granito delle Alpi, from the Alps Feldsparphyric diorite. Fractured and replaced zoned feldspar phenocrysts and rarer clusters of amphibole, are set in a granular groundmass of white feldspar, quartz and a ferromagnesian mineral. It has pervasive chloritic alteration and granular recrystallisation. Pale green veins cross the specimen
999stone 999 Granito delle Alpi, from the Alps Sepentinite. Very coarse-grained. Mottled dark and lighter green. Dark green, veined and cleaved altered pyroxene perhaps with original exsolution texture. Pale green (?) antigorite pseudomorphs retaining ghost fracture pattern of original olivine. One end of specimen shows clasis with constituent minerals forming granular aggregate. White cross-cutting veins contain carbonate and silicate.
1000stone 1000 Granito delle Alpi, from the Alps; or perhaps from Elba, Livorno, Tuscany, Italy Breccia of calcite marble, limestone, serpentine, and metagabbro clasts, with a single large metagabbro clast forming the greater part of the specimen.
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