Corsi Collection of Decorative Stones

Page 7 of 10, showing 601 - 700 of 1000 stones.
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OUMNH number Name and quarry location Geological description
OUMNH number Name and quarry location Geological description
278stone 278 Marmo conchigliare rosso di Roma, from Rome, Lazio, Italy Fossiliferous calcareous sandstone with serpulid worm tubes and bivalve debris.
194stone 194 Marmo della Gaetta, from Gaetta, Lake Como, Como, Lombardy, Italy Heavily recrystallised and fractured ?calcarenite, with disseminated pyrite on fractures.
250stone 250 Marmo della Gaetta, from Gaetta, Lake Como, Como, Lombardy, Italy; or more probably from the area north of Verona, Veneto, Italy. Bioclast-rich microsparite limestone with gastropods and bivalves; perhaps originally nodular/intraclastic/conglomeritic, now much brecciated. It has calcite-filled fractures and stylolites.
201stone 201 Marmo di Brentónico, from Brentónico, Trentino, Trentino-Alto Adige, Italy Fractured, stylolitised, burrowed nodular limestone. It is fine-grained, and variably bioclast-rich/bioclast-poor, with scattered ammonoids. Patches are rich in dolomite rhombs.
189stone 189 Marmo di Candoglia, marmo del Duomo, from Candoglia, Novara, Piedmont, Italy Coarse-grained calcite marble with grey tinted 'veins', and with small grains of quartz scattered through it, giving a slightly mottled appearance.
593stone 593 Marmo di Santa Cattarina dell'Elba, from the island of Elba, Livorno, Tuscany, Italy Serpentinite, finely brecciated and veined with calcite.
15stone 15 Marmo di Segni, from Segni, Rome, Lazio, Italy Sparsely peloidal/intraclastic fine-grained limestone (micrite or microspar) with calcite-filled vugs. The top surface shows the fenestral fabric of a birds-eye limestone.
155stone 155 Marmo fiorito di Casale, perhaps Lumachella di San Vitale, from Casale, Verona, Veneto, Italy Heavily recrystallised limestone with relict bivalves and other rather obscure traces of fossils.
46stone 46 Marmo giallo di Lubiara, from Lubiara, Caprino Veronese, Verona, Veneto, Italy Biomicrite limestone with scattered small bioclasts, slender fractures and stylolites. Sparse large intraclasts suggest it is from a debris-flow deposit.
48stone 48 Marmo giallo di Mizolle, from Mizolle, Val Pantena, Verona, Veneto, Italy Sparry yellow limestone with scattered rhombohedral crystals of calcite, and with intraclasts of white fine-grained limestone. Dark coloured speckling is pyrite and wax filler.
190stone 190 Marmo giallo di Saltrio, from Saltrio, Milan, Lombardy, Italy Recrystallised limestone or marble, with calcite-filled fractures, and with ferruginous orange stylolites.
47stone 47 Marmo giallo di Torri del Benaco, giallo di Verona, Verona yellow, from Torri del Benaco, Verona, Veneto, Italy Fine-grained fossiliferous bioclast-rich limestone, burrowed, and showing prominent stylolites.
45stone 45 Marmo giallo e turchino di Mizzolle, from Mizolle, Val Pantena, Verona, Veneto, Italy Burrowed limestone. The grey matrix is a fossiliferous grain-supported bio-pel micrite limestone. The yellow burrow-filling has subhedral rhombic calcite crystals, appearing peloidal in places. It has stylolites and stylolitised pellet contacts.
1stone 1 Marmo Greco duro; most probably Thasian marble, marmo Thaso from Cape Vathy, Island of Thasos (Thassos), East Macedonia and Thrace, Greece Medium-grained dolomite marble.
99stone 99 Marmo Greco scritto from Capo de Garde, Annaba (Hippo Regius), Algeria A deformed, medium to coarse-grained calcite marble. A tectonite showing linear shear fabric. The dark grey graphite-rich zones result from the deformation of a breccia or vein system rather than a colour-banded rock.
100stone 100 Marmo Greco scritto from Capo de Garde, Annaba (Hippo Regius), Algeria A deformed medium to coarse-grained calcite marble. A tectonite showing linear shear fabric. The banding is more continuous than in Corsi no.99.
498stone 498 Marmo marrone di Sestino, from Sestino, Milan, Lombardy, Italy; or from Verona, Veneto, Italy Most probably a resedimented nodular limestone with extensive solution seams and stylolites.
158stone 158 Marmo mischio di Monte Bolca, from Monte Bolca, Val d'Illasi, Verona, Veneto, Italy Heavily recrystallised foraminiferous limestone. Large benthic forams are visible on the side of specimen.
76stone 76 Marmo nero di Como, from Como, Lombardy, Italy Black bituminous limestone with inclusions of organic matter, perhaps coprolites.
74stone 74 Marmo nero di Torino from the province of Turin, or more probably Portoro from the Porto Venere area, Liguria, Italy. Black fine-grained limestone with a few thin yellow/white veins, and with distinctive black (organic matter?) veining.
75stone 75 Marmo nero di Trapani, perhaps marmo nero di Erice from Monte San Giuliano; Trapani, Sicily, Italy Bioclastic limestone with abundant black recrystallised relics of microfossils. The side of the specimen shows the black coloration is constrained by calcite-filled microfractures giving the effect of pietra paesina (ruin marble).
262stone 262 Marmo ovara bianca di Monte Bolca, from Monte Bolca, Val d'Illasi, Verona, Veneto, Italy Alveolinid limestone with algal grains and small intraclasts.
259stone 259 Marmo ovara bigio di Bolca, from Monte Bolca, Val d'Illasi, Verona, Veneto, Italy Fossiliferous biosparite limestone with abundant small nummulites. Also present are diverse bethic forams, algal and molluscan grains.
180stone 180 Marmo palombino di Sestri, from Sestri Ponente, Genoa, Liguria, Italy Limestone; a pel-sparite with what look like birds-eyes, and with scattered molluscan and algal debris. One corner of the specimen has compact banded travertine.
214stone 214 Marmo pavonazzo dell'Alpi, from the Alps Micaceous ?siltstone (siliceous), with calcite-filled veins.
563stone 563 Marmo polveroso di Pistoia, from Pistoia, Tuscany, Italy Micritic limestone with abundant planktonic foraminifera.
341stone 341 marmo rosa dell' Alcenago, from Alsenaso, Val Pantena, Verona, Veneto, Italy Not ‘alabaster’. A fine-grained calcarenite limestone.
338stone 338 Marmo rosa di Stalavena, from Stalavena di Grezzana, Val Pantena, Verona, Veneto, Italy Not a travertine and so incorrectly classified as alabaster. This is a bioclast-rich burrowed micritic limestone with stylolites and spar-filled fractures.
69stone 69 Marmo rosso d'Abruzzo, from Abruzzo, Italy. Burrowed bioclast-rich biomicrite limestone.
70stone 70 Marmo rosso di Lugo, rosso Verona, from Lugo di Grezzana, in the Val Pantena, Verona, Veneto, Italy A burrowed bioclast and peloid-rich micritic limestone, probably from the Jurassic Rosso Ammonitico Formation.
67stone 67 Marmo rosso di Prodo, from Prodo, or more probably Colonnetta di Prodo, Terni, Umbria, Italy Limestone. A fossiliferous biomicrite crowded with planktonic forams and calcispheres. Disrupted banding marks a layer that has transported and re-sedimented, probably the result of slumping. Fractures are calcite-filled.
64stone 64 Marmo rosso di Sabina; Sabina, Umbria, Italy is not confirmed as the locality. A laminated limestone containing bioclasts and peloids (pellet-sized grains) in a sparite matrix.
183stone 183 Marmo rosso di sant'Eligio, from Sant'Eligio, Verona, Veneto, Italy Nodular Jurassic-Cretaceous pelagic limestone, the colour leached along fractures and stylolites, which are spar-filled in places. Contains ammonites and a few patchy areas rich in other fossil debris.
535stone 535 Marmo rosso di Siracusa, from Syracuse, Sicily, Italy Perhaps a deep-water mudstone. The colours are diagenetic.
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.
260stone 260 Marmo schisto bianco di Monte Bolca, from Monte Bolca, Val d'Illasi, Verona, Veneto, Italy Limestone. A fossiliferous biosparite with abundant benthic forams (Quinqueloculina, Alveolina), algae, and sclerosponge. It is probably Eocene.
261stone 261 Marmo schisto bigio di Monte Bolca, from Monte Bolca, Val d'Illasi, Verona, Veneto, Italy Foraminiferal limestone (Alveolina?), with calcite-filled voids in the forams.
38stone 38 Marmo scuro di Trento, from Trent, Trentino-Alto Adige, Italy (not confirmed) Biomicrite limestone densely packed with tests of foraminifera and other plankton, with calcite-filled veins and (on the sides of the specimen) dendrites of black manganese oxides. The whole stone has ferruginous staining constrained by the fracture pattern.
504stone 504 Marmo venato di Tivoli, from Tivoli, Roma, Lazio, Italy Biomicrite with scattered dendritic manganese oxides. Side of specimen shows slumping and intraclasts in stylolitised shelly limestone. Note subsequent extensive fracturing, the fractures calcite-filled.
505stone 505 Marmo venato di Tivoli, from Tivoli, Roma, Lazio, Italy Recrystallised, probably originally bioturbated, micritic or microspar limestone with extensive stylolites and calcite filled fractures.
708stone 708 Marmor aequipondus, perhaps from Liguria, Italy Serpentinised (or possibly fine amphibolitised) peridotite with coarse-grained green former pyroxenes, pale green former olivine domains, and opaque oxide.
847stone 847 Marmor Claudianum, granito del Foro, from Mons Claudianus, Eastern Desert, Egypt It is a weakly metamorphosed granodiorite showing some foliation, and composed mainly of plagioclase feldspar, hornblende, biotite, and lesser amounts of quartz, with traces of epidote.
210stone 210 Marmorato di Como, from Como, Lombardy, Italy Birdseye limestone, probably originally a peloidal micrite. Oncolites, rounded sedimentary structures resulting from cyanobacterial growth, can be seen in places.
502stone 502 Marmorato di Osimo, from Osimo, Ancona, Marches, Italy Burrowed nodular fossiliferous micritic limestone with abundant 'filaments' of Buchia/Posidonia (bivalves).
281stone 281 Meandrite di Verona, from Verona, Veneto, Italy Recrystallised colonial scleractinian coral with pink micrite and spar-filled voids.
455stone 455 Mischio di Casale, from Casale, Verona, Veneto, Italy, is doubtful Limestone breccia-conglomerate with scattered large bioclasts of marine organisms in a creamy microcrystalline matrix containing forams. Note extensive suturing of grain boundaries, and calcite filled fractures.
255stone 255 Moregio di S.Ambrogio, from 'Sant'Ambrogio', Vicenza, Veneto, Italy - most likely the Chiampo area, Vicenza. Biosparite limestone with abundant skeletal debris of larger benthic forams (Nummulites, Assilina, Alveolina), small benthic forams, calcareous algae, echinoderms, and bryozoans. Note the pervasive incipient stylolites. It is probably of Middle Eocene age.
725stone 725 Moss agate, agata di Sardegna, from Sardinia, Italy White chalcedony (cryptocrystalline quartz) with subtle agate banding, and extensive dendritic iron/manganese oxides.
191stone 191 Nembro di Monta Baldo, from Monte Baldo, Verona, Veneto, Italy Limestone; a fossiliferous burrowed peloidal biosparite.
181stone 181 Nembro di San Giorgio, from Verona, Veneto, Italy; but San Giorgio is doubtful. Peloidal/intraclastic limestone with fine grained micrite/microspar matrix, and with pervasive solution-seams.
71stone 71 Nero antico from Jebel Aziza, Tunisia Very fine-grained black marble with intersecting shear fractures and white calcite/pyrite-filled extension veinlets.
670stone 670 Obsidian, locality unknown Obsidian. Black glassy rock speckled with round white amygdales or spherulites.
198stone 198 Occhiadina di Bergamo, from Bergamo, Lombardy, Italy Birds-eye limestone; probably originally a peloidal micrite.
241stone 241 Occhiadino di Como, from Como, Lombardy, Italy Limestone. A bioturbated fossiliferous microsparite with abundant oncolites, and mollusc, foram and echinoderm debris. It has prominent spar-filled fractures.
414stone 414 Occhio di pernice, locality unknown Limestone conglomerate. Clasts are in part intraclast-rich; this may be debris flow material. Note extensive stylolites and calcite-filled fractures
422stone 422 Oolite bianca di Monte Baldo, from Monte Baldo, and most probably from Punta San Vigilio, Verona, Veneto, Italy Oolitic limestone; oosparite with calcite-filled fractures.
423stone 423 Oolite bianca e gialla di Monte Baldo, from Monte Baldo, and most probably from Punta San Vigilio, Verona, Veneto, Italy Oolitic limestone; oosparite with extensive yellow limonite in the matrix and cortex of the ooliths. Brown is filler/polishing compound.
424stone 424 Oolite bigia di Brescia, from Brescia, Lombardy, Italy Oolitic limestone; oosparite with abundant crinoid debris.
750stone 750 Opal, resinite della Tolfa, from Monti della Tolfa, near Civitavecchia, Rome, Lazio, Italy Massive resinite, a variety of opal; ferruginous coloration.
13stone 13 Palombino antico, possibly from the Apennines, Italy. Heavily recrystallised intraclastic limestone. The brown specks are polishing compound.
12stone 12 Palombino antico, probably from Turkey, but perhaps from the Apennines of Italy Biosparite limestone with abundant bivalve fragments. It fluoresces yellow strongly under longwave ultraviolet light.
19stone 19 Palombino di Ancona, from Ancona, Marche, Italy is not confirmed but may be correct. Burrowed micritic limestone with patchily distributed planktonic forams and other bioclasts. It is possibly a variety of 'calcare massiccio'.
503stone 503 Palombino di Cesena, from Cesena in Emilia, Forli, Emilia-Romagno, Italy Micritic limestone showing faint iron-staining constrained by a system of healed microfractures.
18stone 18 Palombino di Mazzurega, from Mazzurega, near Fumane, Verona, Veneto, Italy Burrowed micritic limestone with calcite-filled fractures, perhaps Lower Cretaceous 'Biancone'.
57stone 57 Palombino rosso di Ancona, most probably from the area west of Ancona, in the eastern Apennines, Italy. Pelagic limestone from the Upper Cretaceous to Eocene Scaglia Rossa Formation. A bioturbated fossiliferous biomicrite with abundant tiny planktonic forams and calcispheres. Sparse slender calcite-filled fractures constrain the pink diagenetic colouring banding, analogous to the effect seen in pietra paesina.
513stone 513 Palombino venato, locality unknown Algal limestone.
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.
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.
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.
714stone 714 Petrified wood, locality unknown Wood with bivalve borings (mainly visible on sides of specimen) infilled with limestone, the whole subsequently silicified. Note scattered pyrite crystals in borings.
715stone 715 Petrified wood, locality unknown Silicified wood; but lacking knots and very much paler than Corsi describes.
716stone 716 Petrified wood, locality unknown Silicified wood, partly stained and banded with brown goethite and red hematite.
717stone 717 Petrified wood, locality unknown Silicified wood, cavities infilled with quartz crystals.
718stone 718 Petrified wood, locality unknown Silicified wood with very well-preserved cell structure, most probably opal rather than quartz.
564stone 564 Pietra alluminosa (alumstone), from Monti della Tolfa, near Civitavecchia, Rome, Lazio, Italy Alumstone. Medium- to fine-grained granular alunite with abundant cavities (vugs) lined with alunite crystals. Red/ brown is iron staining mainly in and around the vugs.
574stone 574 Pietra Braschia, from The Western Alps Garnet peridotite showing reaction rims with radial structure around embayed garnets. The outer rim is probably granular pyroxene. The matrix is olivine-rich, recrystallised, with a tectonic fabric.
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.
624stone 624 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Bedded volcanogenic sediment of calcareous composition throughout, with ovoid clasts up to 30mm of altered ultramafic rock. It has possible ripples and other soft sediment structures with some rip-ups and clasts settled in troughs. One layer comprises clasts of 1-2mm uniformly sized rounded grains.
625stone 625 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Finely laminated carbonate-rich tuff or volcanogenic sediment. The white laminae are composed of altered ultramafic clasts and black (oxide?) grains. The stone is crossed by later veins with alteration haloes.
626stone 626 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy A carbonate-rich laminated water-lain tuff, probably a volcanogenic sediment. It has alternating dark and light grey layers, the former showing occasional rip-ups. Half of the specimen comprises a dark grey graded coarser layer and a light grey well-graded finer layer; the coarser layer contains aligned dark angular clasts which are possibly fluid-escape veinlets.
627stone 627 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Fine-grained carbonate-rich volcanogenic sediment. The finely laminated dark grey layer is intersected by a network of light coloured veins (possible fluid escape veins). Grey veinlets rise perpendicular from the dark layer, through two intermediate well-laminated layers, into the white band.
628stone 628 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Carbonate-rich bedded volcanogenic sediment, comprising well-graded light and dark layers at abrupt contact with each other. The light layer has rounded clasts up to 4mm of altered tephra. The two elongated ovoid bodies with concentric structure and crenulate margins, have diffuse margins especially with the lighter layer, and may be metasomatically altered carbonate xenoliths.
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.
630stone 630 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Carbonate-bearing volcanogenic mudstone with signs of bedding and soft-sediment deformation. It has a network of anastomosing white veinlets, and occasional dark ovoid bodies. Some of these show a concentric structure suggesting they are accretionary lapilli.
631stone 631 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy A calc-silicate skarn. It is medium to coarse-grained, and contains irregular patches with concentric zonary structure, interior part of carbonate stained brown in places and acicular crystals of dark green amphibole passing outwards through zone of same mineral assemblage but more granular crystal form into outer zone of white carbonate (aragonite?).
632stone 632 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy A calc-silicate skarn, composed of iron-stained brown and pale green granular dolomite/calcite and dark green to black amphibole/chlorite mixture containing scattered aggregates of yellow ?. Carbonate-rich parts contain zones of subhedral pale green crystals which may be prehnite.
633stone 633 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy A silicate-rich skarn with dark patches of ?grossular, and possible prehnite and pyroxene. Minor calcite is also present, perhaps mixed with dolomite.
634stone 634 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Silicate-rich skarn with fan aggregates of fibrous green amphibole, and abundant muscovite. It has minor grossular garnet, spinel, and calcite, the latter possibly mixed with dolomite. Pyrite was also present in veins, and its oxidation has resulted in some cracking of the specimen.
635stone 635 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Metasomatised carbonate, possibly from a skarn deposit. It is composed of calcite perhaps with dolomite. Fractures contain hematite.
636stone 636 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Silicate-rich skarn with dispersed carbonate and some euhedral crystals in vugs. Fawn-coloured feldspar-bearing) to pale green (amphibole), darker green and black irregular patches (acicular green amphibole and Fe-oxide/spinel).
637stone 637 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Silicate-rich skarn, containing green amphibole and fawn-coloured feldspar. Brown areas are filler.
638stone 638 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Altered volcaniclastic sediment. Angular clasts/tephra have various textures and some have black oxide-rich margins. Minor disseminated carbonate is present.
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.
640stone 640 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Welded tuff. Densely welded and recrystallised, with a dark brown to black streaky texture. A shard structure is faintly visible.
641stone 641 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy A porphyritic lava/dyke rock, probably a trachyandesite, showing a large cognate inclusion with a reaction rim. It has euhedral phenocrysts of pyroxene, feldspar and olivine. The fine-grained groundmass contains the same minerals set in devitrified glass or zeolite.
Page 7 of 10, showing 601 - 700 of 1000 stones.
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