Corsi Collection of Decorative Stones

Page 1 of 4, showing 1 - 100 of 326 stones.
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OUMNH number Name and quarry location Geological description
OUMNH number Name and quarry location Geological description
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.
461stone 461 probably diaspro tenero di Sicilia, from Sicily, Italy; but may be breccia d'Arzo, from Ticino, Switzerland. Polymict limestone breccia with variable amounts of orange iron-staining of micritic matrix.
416stone 416 Probably breccia di Sciro from Skyros, Sporades, Central Greece A nodular or conglomeratic limestone, sheared and metamorphosed to a marble breccia, with extensive clay-rich hematitic matrix and deformed calcite veins. Note extensive late-stage solution seamed stylolite development.
446stone 446 probably breccia di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy; or breccia di Seravezza, from Seravezza, Lucca, Tuscany, Italy Marble breccia: a limestone breccio-conglomerate that has subsequently been metamorphosed.
909stone 909 probably Africano, from Sigacik (ancient Teos), Izmir Province, Turkey Sheared, recrystallised limestone breccia with some relic crinoid debris and abundant stylolites.
472stone 472 perhaps Chiampo, from Ponte Salaro, near Rome is doubtful; this is more likely to be from the area of Chiampo, in Vicenza. Limestone; a foraminiferal ruddite with abundant nummulites and other benthic forams, algal grains, mollusc fragments and limestone intraclasts. It has extensive solution of grain boundaries, creamy micritic cement containing microfossils. Extensive use has been made of an orange filler.
910stone 910 perhaps breccia corallina, from Verzirhan, Bilecik,Turkey Heavily sheared and recrystallised limestone breccia, almost entirely altered to fine-grained marble.
834stone 834 perhaps africano, from Locality unknown; if africano, then from Sigacik (ancient Teos), Izmir Province, Turkey A metamorphosed breccia of dark dolomitic? limestone containing bioclasts such as forams, echinoderm spines and perhaps crinoid ossicles. There are also scattered pyrite crystals and some reddish intraclasts. The matrix is coarsely crystalline pink calcite. There is some chlorite development around clasts. Note the iron-stained calcite-filled fracture.
132stone 132 most probably giallo e nero di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy Finely brecciated weakly metamorphosed fine-grained limestone with veins of saccharoidal to fibrous calcite; some veins and stylolites coloured yellow by included goethite.
136stone 136 most probably giallo e nero di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy Very poorly sorted breccia of black fine-grained weakly metamorphosed limestone in a white calcareous matrix; most of the stone is one larger clast which is crossed with white and ferruginous yellow veins. Note the yellow stylolites and stylolitic clast boundary.
975stone 975 most probably breccia Medici di Siena, from Siena, Tuscany, Italy Fine-grained calcite marble breccia; a sheared and metamorphosed limestone breccia.
742stone 742 almost certainly quarzo di Monterufoli, from Monterufoli, near Pomarance, Pisa, Tuscany, Italy Brecciated banded crystalline slightly smoky-amethystine quartz with some included euhedral black crystals, and aligned white 'feathers' of bubble inclusions. The reddish-brown bands are artificial filler in fracture cavities.
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.
565stone 565 Verde antico, from Larissa, Thessaly, Greece A breccia of serpentinite, schistose calc-silicate and crystalline marble clasts in a lime-green serpentinite matrix.
566stone 566 Verde antico, from Larissa, Thessaly, Greece Breccia with clasts mainly of serpentinite/ophicalcite, a few of marble; extensive scattered crystals of oxide minerals, in a serpentine and calcite matrix. Heavily fractured, many fractures are filled with cross-fibres of chrysotile serpentine.
962stone 962 Verde antico, from Larissa, Thessaly, Greece Breccia with clasts mainly of serpentinite/ophicalcite, and a few of marble.
251stone 251 Travertino di Monte Catini, from Montecatini Terme, Pistoia, Tuscany, Italy Limestone, brown ferruginous in places, composed of brecciated travertine, algal fragments and other bioclasts. Cavities are mostly filled with sparry calcite.
745stone 745 Sicilian jasper, most probably diaspro di Giuliana, from Sicily, Italy, and most probably from Giuliana, Palermo. Brecciated red jasper with rims of opaque white chalcedony. Colourless crystalline quartz matrix is iron-stained and vughy away from clasts. Clasts have colourless quartz-filled fractures.
746stone 746 Sicilian jasper, from Sicily, Italy Brecciated jasper; part red with colourless agate/crystalline quartz matrix, part yellow-brown with colourless crystalline quartz matrix. Later fractures are also filled with colourless quartz.
747stone 747 Sicilian jasper, from Sicily, Italy Brecciated yellow jasper, heavily fractured, with chalcedony/agate-filled fractures and cement. Orange red 'veins' are artificial filler in open fractures.
734stone 734 Sicilian jasper, diaspro-agata di Selinunte, from Selinunte, near Marinella, Trapani, Sicily, Italy Yellow brecciated jasper with chalcedony matrix, faintly agate banded in places with few translucent red/yellow bands. Note crystalline quartz-filled fractures contain layers of ?muscovite crystals.
732stone 732 Sicilian jasper, diaspro-agata di Monreale, from Monreale, Palermo, Sicily, Italy Brecciated brown jasper with matrix and fracture fills of colourless crystalline quartz.
739stone 739 Sicilian jasper, diaspro-agata di Milazzo, from Milazzo, Messina, Sicily, Italy Brecciated jasper; matrix forms faint agate halos around clasts, elsewhere it is colourless quartz. Single crystals may enclose many small clasts or fill a whole fracture.
731stone 731 Sicilian jasper, diaspro-agata di Giuliana, from Giuliana, Palermo, Sicily, Italy Brecciated brown jasper; agate matrix is patchy with hematitic inclusions in some bands; crystalline quartz fills voids. Buff-coloured areas are filler.
738stone 738 Sicilian jasper, diaspro-agata di Giancavallo, from Feudo Giancavallo, near Bisaquino, Palermo, Sicily, Italy Brecciated jasper, clasts mainly yellow, in places altered grey-brown. Matrix of colourless crystalline quartz has some inclusions of iron sulphides on ghost faces. Agate is present as late stage infill within quartz matrix.
733stone 733 Sicilian jasper, diaspro-agata di Cefalú, probably from Cefalà Diana or Bagni di Cefalà, Palermo, Sicily, Italy Yellow-brown brecciated jasper with narrow chalcedony-filled fractures and agate matrix, matrix voids filled with crystalline quartz. Pale speckled areas are filler.
737stone 737 Sicilian jasper, diaspro-agata di Caccamo, from Caccamo, Palermo, Sicily, Italy Brecciated jasper with yellow brown-dark brown clasts. Colourless crystalline quartz matrix has areas of chalcedony with botryoidal surface clearly visible in some places.
735stone 735 Sicilian jasper, diaspro-agata di Adrano, from Adriano, Sicily, Italy Brecciated yellow jasper, clasts heavily fractured, fracture-fill and matrix are greyish white chalcedony stained yellowish away from clasts. Brown patches on specimen are filler, generally in crystalline quartz-lined cavities.
741stone 741 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy, and most probably from Giancavallo, Bisaquino, Grattieri, or Santa Caterina, all in the province of Palermo. Brecciated jasper (ferruginous compact fine-grained quartz); brown/yellow/green translucent clasts in colourless crystalline quartz matrix. Yellow speckled 'clasts' and brown 'veins' are wax filler.
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.
982stone 982 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Brecciated yellow-brown jasper, agate-filled fractures and matrix, voids filled with crystalline quartz.
761stone 761 Sicilian jasper, diaspro di Santa Cristina Gela, from Santa Cristina Gela, Palermo, Sicily, Italy Breccia of yellow-brown jasper clasts cemented by agate, with cavities infilled by colourless quartz crystals. The whole rock has been heavily fractured, and recemented with quartz or with brown to black iron/manganese oxides, which also emanate as dendrites from fractures. A wide vein of granular orange calcite crosses the back of the specimen.
772stone 772 Sicilian jasper, diaspro di San Stefano di Quisquina, from Santo Stefano Quiquina, Bivona, Agrigento, Sicily, Italy Silicified limestone breccia with agate/crystalline quartz matrix and filling of fractures. Darker brown areas are filler.
776stone 776 Sicilian jasper, diaspro di Palermo, probably diaspro di Navurra, from Palermo, Sicily, Italy; most probably from Feudo Navurra, near Casteldaccia. Brecciated jasper, clasts mottled orange/red with colourless/scarlet banded agate around rims. Matrix is impure grey or pure white coarsely crystalline calcite.
781stone 781 Sicilian jasper, diaspro di Moardo, from Monte Moardo, Altofonte, Palermo, Sicily, Italy Silicified polymict limestone breccia, of fractured clasts with a drusy overgrowth of white quartz crystals in turn coated with agate. Matrix is orange iron-stained or white granular quartz. Note relic microfauna.
762stone 762 Sicilian jasper, diaspro di Misilmeri, from Misilmeri, Palermo, Sicily, Italy Brecciated jasper. Heavily fractured clasts are green or transparent with patchy yellow inclusions. Cement is crystalline quartz and pale green microcrystalline calcite. Dark brown and dark green speckled areas are filler.
764stone 764 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy A fractured banded yellow and green jasper breccia, matrix and fracture fills are part chalcedony part colourless quartz. Microfossils are abundant in bright yellow areas.
767stone 767 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy A banded brown, yellow and green jasper breccia, matrix and fracture fills are part chalcedony part colourless quartz, fractures also with bands of pyrite. Microfossils are evident in some bright yellow areas.
771stone 771 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy Brecciated red jasper with heavily-fractured agate matrix. Wider fractures are filled with white fine-grained quartz and yellowish carbonate mineral, the latter also present as colourless-yellow zoned rhombohedral crystals in both jasper and agate matrix. Pinkish-brown areas are filler.
774stone 774 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy Breccia or red jasper clasts in a white quartz/agate matrix, re-fractured and cemented with colourless crystalline quartz containing scattered inclusions of green chlorite.
778stone 778 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy Brecciated jasper. Red hematitic pellitic clasts are brown, goethitic at margins and along fractures, and are surrounded by milky agate. Matrix is creamy white granular/drusy calcite with patchy iron-staining.
779stone 779 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy A breccia of green and brown jaspery siliceous clasts in a red, iron-stained, calcareous matrix
569stone 569 Serpentina verde di Varallo, from Varallo, Novara, Piedmont, Italy Brecciated serpentinite-marble with light to dark green fragmented serpentinite clasts in fine-grained marble and vein calcite matrix. Serpentinite has local concentrations of fine-grained oxide mineral.
570stone 570 Serpentina verde di Varallo, from Varallo, Novara, Piedmont, Italy A sheared breccia of serpentinite clasts in fine-grained calcite matrix, with abundant streaks and grains of dark grey oxide minerals.
571stone 571 Serpentina verde di Susa, from Val di Susa, Turin, Piedmont, Italy Serpentinite veined with fine-grained grey calcite.
584stone 584 Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy Brecciated serpentinite.
585stone 585 Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy Brecciated serpentinite.
586stone 586 Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy Brecciated serpentinite.
587stone 587 Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy Brecciated serpentinite.
594stone 594 Serpentina verde di Genova, from Genoa, Liguria, Italy Brecciated serpentinite. Broken clasts of pale green serpentine, platey 'striped' dark green serpentine and brown/white marble in a matrix of brown and white calcite.
573stone 573 Serpentina verde di Calabria, from Calabria, Italy Brecciated serpentinite.
575stone 575 Serpentina di Valsabbia, from Valsabbia, Brescia, Lombardy, Italy Breccia with clasts mainly of serpentinite/ophicalcite, a few of marble.
484stone 484 Serpentina di Torino from the province of Turin, Piedmont, Italy Poorly-sorted breccia of heavily fractured, calcite-cemented clasts of serpentinite in a gritty ferruginous matrix.
963stone 963 Serpentina di Santa Caterina, from Santa Caterina, island of Elba, Livorno, Tuscany, Italy Serpentinite, finely brecciated and veined with calcite.
598stone 598 Serpentina di Corsica, from Corsica, France Breccia of angular clasts of brown and pale green serpentinite in a paler coloured matrix with a reticulated system of very fine grey fibrous chrysotile veins throughout.
608stone 608 Serpentina delle Alpi, from the Alps Silicified serpentinite breccia. Rounded clasts of granular silicified serpentine in massive quartz matrix, with streaks of cream quartz-dolomite.
409stone 409 Semesanto, from Isle of Skyros, Sporades, Central Greece Polymict sheared limestone breccia in clay-rich matrix.
436stone 436 Semesanto di Milano, from Milan, Lombardy, Italy Lower Jurassic limestone. A crinoidal biosparite, the red crinoid debris overgrown with white calcite rims, and with coarse sparry calcite in the interstices.
497stone 497 Rosso Verona, from Verona, Veneto, Italy Limestone from the Jurassic Rosso Ammonitico formation. A red nodular, micritic limestone with pervasive clay-coated solution seams.
389stone 389 Rosso brecciato, from Kiyi Kislacik, Milas, Mugla Province, Turkey Marble breccia; matrix-supported clasts of coarse-grained grey and finer-grained white marble. Perhaps a metamorphosed debris flow.
903stone 903 Rosso antico brecciato, from Kiyi Kislacik, Milas, Mugla Province, Turkey Breccia of calcite marble clasts in a hematitic matrix.
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.
698stone 698 Pudingo delle Alpi, from the Alps Well-sorted quartz conglomerate with subsidiary lithic clasts.
699stone 699 Pudingo delle Alpi, from the Alps Lithic breccia-conglomerate with siliceous clasts.
681stone 681 Pudingo antico, locality unknown Poorly sorted synsedimentary breccia/conglomerate. Red clasts are chert, containing igneous grains.
682stone 682 Pudingo antico, locality unknown Polymict conglomerate with clasts of quartz, chert, silicified limestone, and dolomitic limestone. The matrix is calcareous.
134stone 134 Portoro, from Portovenere, Liguria, Italy Breccia of black fine-grained weakly metamorphosed limestone with thin white calcite-filled veins, in a matrix of granular calcite coloured yellow by included goethite. Yellow stylolites are also prominent.
78stone 78 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Fine-grained compact limestone breccia. Heavily fractured, the later fractures are filled with white calcite. Some mollusc shell fragments are present.
79stone 79 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Fine-grained compact limestone, partially recrystallised. Abundant stylolites containing red iron oxides give a reticulated (net-like) appearance.
80stone 80 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Partially recrystallised fine-grained compact limestone. Red and yellow iron oxides are concentrated in abundant stylolites, giving a reticulated (net-like) appearance.
81stone 81 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Fine-grained compact limestone, partially recrystallised, with abundant stylolites.
82stone 82 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece A breccia of pink micritic limestone clasts with intraclasts of a pink/grey breccia. A little dark red-brown hematitic matrix is visible in a few places. Abundant stylolites cross the stone and later fractures are filled with white calcite. White lines are scratches.
84stone 84 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Breccia of poorly-sorted fine-grained pink and cream-coloured limestone clasts in a dark red hematite-bearing micritic matrix. The limestone clasts have a few bioclasts and stylolites. Late stage white calcite-filled fractures cross the specimen.
87stone 87 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Limestone breccia. The clasts are pink micritic limestone with pink/grey intraclasts. The matrix is dark red-brown, hematitic. Abundant stylolites cross the stone and later fractures are filled with white calcite.
88stone 88 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece White limestone with relics of bioclasts, spar filled veins and a few yellowish iron oxide-stained veins and stylolites. It is likely to be part of a large clast from a breccia.
193stone 193 Portasanta, from northwest of Chora, Island of Chíos, North Aegean, Greece Fine-grained compact limestone breccia with stylolites and stylolitic clast boundaries. Some relic shell fragments are evident. Fractures are filled with white calcite.
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.
77stone 77 Portasanta, from north west of Chora, Island of Chíos, North Aegean, Greece Large clasts of pale pink compact fine-grained limestone showing a reticulated network of stylolites. It is part of a breccia, and small areas of salmon-pink micritic matrix can be seen.
43stone 43 Pomorolo di Mizzolle, from Mizolle, Val Pantena, Verona, Veneto, Italy Brecciated fine-grained limestone crowded with rhombohedral microcrystals of calcite. It has prominent stylolites. Dark brown areas are wax filler.
430stone 430 Pomorol di S.Giorgio, from San Giorgio, Verona, Veneto, Italy Brecciated, stylolitised, biomicrite limestone with scattered intraclasts.
458stone 458 Pomarolo di Serme, from Serme, Verona, Veneto, Italy Brecciated limestone with red, non-calcareous (perhaps lateritic) matrix.
523stone 523 Pietra paesina, from Valdarno, Florence, Tuscany, Italy Micritic limestone or calcareous marl from the Cretaceous Alberese Formation, showing minor fracture constrained iron-staining, and areas of dendritic manganese oxides.
645stone 645 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Altered pumice breccia. Poorly sorted, with clasts up to 50mm, having rounded, carbonate-infilled vesicles.
646stone 646 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Altered volcanic breccia with a central pale grey fine-grained zone. The large rounded clasts are ferromagnesian-rich volcanic rock, one having a higher feldspar content. The fine-grained zone has a medium-grained leucocratic carbonate-rich core.
647stone 647 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Marble breccia. A low-density breccia with angular clasts of meta-carbonate, and hematite-filled veins. Much of the brown is filler.
648stone 648 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Ignimbrite. A poorly sorted breccia with clasts of rusty-coloured medium grained crystalline rock, discrete crystals of altered feldspar, and ferromagnesian minerals, all in a very fine-grained hematite-bearing groundmass. There is a faint preferred orientation of the clasts.
651stone 651 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy An altered pumice flow breccia. Coarse breccia with clasts of red vesicular rock in pale carbonate matrix. The vesicles are carbonate-filled.
652stone 652 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy An altered ignimbrite. A poorly sorted breccia with clasts of rusty-brown medium-grained crystalline rock, discrete crystals of altered feldspar, and ferromagnesian minerals, all in a very fine-grained hematite-bearing groundmass. A faint preferred orientation of the clasts is evident.
659stone 659 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Volcanic breccia with sub-angular clasts of altered fine-grained basic rock and some of vesicular rock. Vesicles have carbonate infills, and some are surrounded by reaction rims which perhaps indicates magma mixing. The streaky texture suggests some plastic deformation.
665stone 665 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Altered (?phonolitic) tephrite. It is brecciated, but similar in mineralogy to no. 664. Prominent black pyroxenes occur within and separated from the clasts. These also contain a strongly altered felsic mineral. The matrix is white carbonate, but the lack of rounding of pyroxenes suggests that it has infiltrated the rock, and not entered as a result of fracturing and movement.
621stone 621 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Brecciated meta-calcilutite, with brown limonitic veining, occasionally widening into calcite-limonite-opaque oxide aggregates. Some of the brown may be filler.
622stone 622 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Brecciated meta-calcilutite with a few spherical two-phase calcite-filled cavities, and with limonitised siliceous veining. Note brown crystals of ?siderite filling cavities on underside of specimen.
623stone 623 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Brecciated meta-calcilutite with veins of colourless calcite containing metallic yellow pyrite. It retains signs of soft sediment deformation in darker clasts. Some of the brown may be limonitic but most is filler/polishing compound.
629stone 629 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy A deformed, veined carbonate-rich rock. The cream tint and red fracture-fill is caused by jeweller's rouge used for polishing, and is not evident on the unpolished side of the specimen. Yellow is wax filler. The cream end of the specimen is a strongly deformed coarse clastic rock with rounded clasts up to 20mm, some containing brown oxide zones, that plastically intrude the other part.
639stone 639 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Volcanic breccia. This slightly altered polygenetic volcaniclastic rock has clasts/tephra which include alkali volcanic types, sediments and possible skarn fragments. It is poorly sorted and structureless, and may be an ignimbrite.
126stone 126 Petit antique, from area around Hèche and Hèchettes, Hautes-Pyrénées, France Breccia of black and grey limestone clasts in a compact white granular calcite matrix.
123stone 123 Pavonazzetto, from Iscehisar (Synnada), Afyonkarahisar Province, Turkey Breccia-conglomerate of medium-grained white calcite marble clasts in a purple-red hematite-rich calcite matrix.
124stone 124 Pavonazzetto, from Iscehisar (Synnada), Afyonkarahisar Province, Turkey Breccia-conglomerate of medium-grained white calcite marble clasts in a purple-red hematite-rich calcite matrix.
420stone 420 Pavonazzetto, from Iscehisar (Synnada), Afyonkarahisar Province, Turkey Breccia of medium to coarse-grained calcite marble clasts in a darkred marble matrix.
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