Corsi Collection of Decorative Stones

Page 3 of 4, showing 201 - 300 of 326 stones.
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OUMNH number Name and quarry location Geological description
OUMNH number Name and quarry location Geological description
469stone 469 Breccia degli Appennini, from Apennines, Italy Matrix-supported bio- and intraclast-rich biomicrite limestone. It is poorly sorted; possibly resedimented in a debris flow.
470stone 470 Breccia degli Appennini, from Apennines, Italy Bioturbated fossiliferous biomicrite limestone. A packstone (grain-supported, the bioclasts in contact). It has fractures and stylolites.
171stone 171 Diaspro tenero di Sicilia, libeccio, from Sicily, Italy; perhaps Cefalù area This appears to be submarine cement infills of neptunian dykes in a pelagic green limestone. It is heavily fractured.
907stone 907 'Portasanta', locality unknown Sheared limestone/marble breccia with extensive stylolite development.
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.
500stone 500 'Persichino di Romegiano', from Domegiano or Romagnano, Verona, Veneto, Italy Fossiliferous micritic limestone with debris probably of bivalves.
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.
537stone 537 Diaspro tenero di Sicilia, pietra topografica di Taormina, from Taormina, Messina, Sicily, Italy Micritic limestone or marl with diagenetic colouring. Veins and fractures are filled with calcite.
526stone 526 Breccia di Modena, from Modena, Emilia-Romagna, Italy Micrite/microsparite limestone with abundant bioclasts, extensively bioturbated, fractured and stylolitised. Dendritic iron and manganese oxides are developed along stylolites.
525stone 525 Breccia di Modena, from Modena, Emilia-Romagna, Italy Micrite/microsparite limestone with abundant bioclasts, extensively fractured and stylolitised. Dendritic iron and manganese oxides are developed along stylolites.
536stone 536 Diaspro tenero di Sicilia, tigrato di Trapani, from Custonaci, Trapani, Sicily, Italy Micritic or microsparite limestone containing a mass of Teredo or similar wood-boring bivalves; no evidence of the wood itself remeins.
165stone 165 Diaspro tenero di Sicilia, libeccio, from Castronuovo di Sicilia, Palermo, Sicily, Italy Limestone, perhaps resedimented; micrite/microsparite crowded with tiny bio/intraclasts and showing traces of grading in places. Note extensive solution seams, stylolites and calcite-filled fractures.
494stone 494 Breccia di Napoli, from Naples, Campania, Italy Micritic limestone with pale grey dolomite nodules; calcite-filled fractures, and disseminated dendritic pyrolusite. Brown is filler.
457stone 457 Griotte, from the Haute Pyrénées, France Devonian hematite-rich fine-grained nodular limestone with extensive stylolite development. White areas are calcite spar-filled goniatites
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.
466stone 466 Breccia del Largo di Garda, from Lake Garda, Lombardy, Italy Rosso ammonitico Middle-Upper Jurassic nodular pelagic limestone.
187stone 187 Cottanello, from Cottanello, Rieti, Lazio, Italy Cretaceous-Eocene pelagic limestone. A brecciated biomicrite with abundant planktonic forams and calcispheres. Calcite-filled fractures and voids are cut by late stage red clay-filled stylolites.
164stone 164 Diaspro tenero di Sicilia, libeccio, from Bisaquino, Palermo, Sicily, Italy Slumped green pelagic limestone with perhaps submarine cement infills of neptunian dykes. Note stylolites. Less fractures than the similar specimen no.171.
234stone 234 Lumachella di Menaggio, from Menaggio, Como, Lombardy, Italy, or more likely a lumachella from Verona or Vicenza, Veneto, Italy. Fossiliferous pel-sparite limestone. It has abundant peloids and intraclasts of micritic limestone in a sparry matrix. Some layers are rich in bivalves, others are edgewise breccia together with fragments of laminated 'algal' cyanobacterial micrite.
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.
437stone 437 Broccatellone, from Verzirhan, Bilecik,Turkey Polymict limestone breccia with spar-filled cavities. Note suturing/dissolution at clast boundaries.
471stone 471 Breccia di Ponte Salaro, from Ponte Salaro, near. Rome, Lazio, Italy Polymict limestone conglomerate with abundant nummulites, molluscan and other skeletal debris. It is extensively stylolitised. The micritic matrix has a rich microfauna. It has large areas of yellowish filler and brown areas around clasts are also filler.
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.
680stone 680 Breccia frutticolosa, from Bourdeau, Savoie, France Conglomerate of diverse limestone clasts. Clasts have been burrowed by marine bivalves. Matrix is calcareous sandstone with ferromagnesium silicate grains of volcanic origin.
37stone 37 Broccatello di Siena, convent Siena, from Monte Arrenti near Sovicille, Siena, Italy Sheared limestone breccia with indications of soft sediment deformation fractures and extensive late-stage solution seams and stylolites.
480stone 480 Breccia di Val di Radi, breccia di Siena, from Valle di Radi, Siena, Tuscany, Italy Sheared micritic limestone with plastic deformation features, weakly metamorphosed.
473stone 473 Breccia di Monsumano, from Monsummano Terme, Pistoia, Tuscany, Italy Slumped/sheared limestone breccia with calcite-filled fractures and with small amounts of manganese oxides as dendrites and stylolites.
758stone 758 Calcedonio di Volterra, Diaspro di Monterufoli, from Monterufoli, near Pomarance, Pisa, Tuscany, Italy Breccio conglomerate of siliceous jaspery clasts in a groundmass of partially silicified dolomitic limestone, cavities infilled with colourless to grey agate.
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.
161stone 161 Diaspro tenero di Sicilia, libeccio, from Gibellina Vecchia, Trapani, Sicily, Italy Recrystallised limestone; originally probably a noular micrite/microspar, voids filled by sparry calcite. Buff-coloured area are filler.
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.
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.
485stone 485 breccia rossa Appenninica, from between Biassa and Pegazzano, La Spezia, Liguria, Italy Burrowed stylolitised nodular limestone which has been tectonically modified.
110stone 110 Africano, from Sigacik (ancient Teos), Izmir Province, Turkey Cretaceous tectonic breccia of poorly sorted limestone clasts, with stylolites and calcite-filled fractures
129stone 129 Bianco e nero di Portoferraio, from Portoferraio, island of Elba, Livorno, Tuscany, Italy Black limestone breccia with white calcite-filled veins and fractures, some en echelon and fibrous in places. Abundant stylolites and thin fractures are filled with yellow siderite.
166stone 166 Diaspro tenero di Sicilia, libeccio, from Feudo Lalia, Alia, Palermo, Sicily, Italy Heavily fractured stylolitised birds-eye limestone with extensive fenestral fabric (calcite-filled vugs). Matrix is fossiliferous peloidal micrite/microspar.
407stone 407 Griotte, from the Haute Pyrénées, France Lower Devonian red nodular limestone, clay-rich matrix, with extensive solution seams and stylolites
169stone 169 Diaspro tenero di Sicilia, from Taormina, Messina, Sicily, Italy Re-sedimented limestone of the Rosso Ammonitico Formation. It is heavily stylolitised, and the colour is diagenetic.
950stone 950 Breccia corallina, from Verzirhan, Bilecik,Turkey Tectonic brecciated limestone breccia, heavily fractured with stylolites and solution-modified clast boundaries.
394stone 394 Breccia di Aleppo, from Island of Chíos, North Aegean, Greece Polymict limestone conglomerate with solution-modified clast boundaries and stylolites.
396stone 396 Breccia traccagnina, locality unknown Polymict limestone conglomerate with solution-modified sutured clast boundaries and stylolites.
441stone 441 Breccia del lago di Como, from Lake Como, Como, Lombardy, Italy Peloidal limestone breccia. The matrix is pale brown transparent calcite, as compact banded travertine in places. Note extensive brown filler/polishing compound.
936stone 936 Alabastro antico, locality unknown Limestone breccia. Calcite travertine clasts, and a few gastropod shells, in a micritic (peloidal in places) matrix.
691stone 691 Breccia di Torrita, from Torrita Tiberina, near Rome, Lazio, Italy Polymict conglomerate of limestone pebbles, bordering on compact calcite travertine. The cement is calcarenite. There is extensive brown filler.
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.
944stone 944 Breccia corallina, from Verzirhan, Bilecik,Turkey Weakly metamorphosed limestone breccia with stylolitised clast boundaries, and with small cavities filled with sparry calcite.
96stone 96 Cipollino rosso, from Kiyi Kislacik, Milas, Mugla Province, Turkey Fine to medium-grained folded impure limestone, now weakly metamorphosed to marble but the abundant debris suggesting it was in part a calcarenite.
301stone 301 Alabastro fiorito, most probably from the Pamukkale area, Denizli, Turkey Compact banded travertine, brecciated in places, composed of fine- to medium-grained calcite with some orange-brown ferruginous bands. Abundant cavities contain greyish brown wax filler.
303stone 303 Alabastro a occhi, locality unknown Brecciated fine-grained compact banded travertine, with acicular and granular bands of calcite, some dark orange-brown coloured.
371stone 371 Alabastro di Civitavecchia, from Civitavecchia, Rome, Lazio, Italy Breccia of travertine clasts, peloids, algal debris and fine-grained ferruginous detritus in a sparite matrix .
330stone 330 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria. This appears to be a recrystallised brecciated compact banded travertine, composed of medium and coarse-grained granular calcite. It is coloured red by disseminated hematite.
205stone 205 Fior di pesco (fior di persico), from Eretria, Euboea, Central Greece Triassic tectonite. A sheared marble breccia with late-stage calcite-filled veins and fractures
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.
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.
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.
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.
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.
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.
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.
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.
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.
196stone 196 Fior di persico, from Seravezza, Lucca, Tuscany, Italy Marble; a tectonised and sheared limestone breccia-conglomerate.
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.
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.
683stone 683 'Traccagnina delle Alpi', perhaps from the province of Verona, Italy Breccia-conglomerate of sub-angular to rounded limestone, dolostone and occasional quartz clasts in a ferruginous sparite matrix. Clasts show extensive fracturing.
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.
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.
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.
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.
698stone 698 Pudingo delle Alpi, from the Alps Well-sorted quartz conglomerate with subsidiary lithic clasts.
875stone 875 Granito delle Alpi, from the Alps; or perhaps breccia d'Armenia, from the historical region of Armenia Coarse hornblende quartz monzonite with pale green-stained (chloritic?) plagioclase and accessory apatite. Specimen shows faint foliation.
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.
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.
677stone 677 Basalte di Venezia, from Venice, Veneto, Italy 'Greenstone' - a brecciated metabasaltic tuff with calcite veins. Some clasts show weak graded bedding.
489stone 489 Breccia degli Appennini, from the Apennines, Italy Deformed granitoid; porphyroblasts are quartz dominantly, perhaps originally vein quartz, now disrupted.
421stone 421 Breccia della villa Adriana, breccia Quintilina, most probably from Levanto, Liguria, Italy Serpentinite breccia.
571stone 571 Serpentina verde di Susa, from Val di Susa, Turin, Piedmont, Italy Serpentinite veined with fine-grained grey calcite.
573stone 573 Serpentina verde di Calabria, from Calabria, Italy Brecciated serpentinite.
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.
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.
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.
679stone 679 Breccia verde d'Egitto, Breccia universale, from Wadi Hammamat, Eastern Desert, Egypt Metaconglomerate of metamorphic and igneous clasts (banded tuff, serpentinite, etc) in a sheared chloritised or epidotised matrix. Note that granitic clasts commonly also occcur in this stone, see 969.
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.
752stone 752 'Diaspro delle Alpi', from the Alps (not confirmed) Breccia of white granular quartz and other clasts, many rimmed with muscovite, in a red ferruginous quartz matrix. Some fractures are filled with calcareous cemented sandstone. The whole rock is sheared and folded.
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.
740stone 740 Calcedonio di Volterra, Diaspro di Monterufoli, from Monterufoli, near Pomarance, Pisa, Tuscany, Italy Brecciated grey-white chalcedony, agate in part; many clasts have halos of yellow goethite banded with cream-coloured microcrystalline quartz, the latter present elsewhere as matrix.
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.
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.
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.
757stone 757 Diaspro di Barga, from Barga, Lucca, Tuscany, Italy A breccia of brown jaspery fragments in colourless crystalline quartz, in turn surrounded by white chalcedony, voids are filled with yellowish crystalline quartz.
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
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.
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.
744stone 744 Diaspro antico, locality unknown Brecciated jasper with black-speckled clasts, many with full or partial rims of opaque white chalcedony. Colourless/white/grey agate matrix has patchy yellow speckling, euhedral crystal inclusions of goethite, and minor late-stage crystalline quartz. No sardonyx is present.
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.
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