Corsi Collection of Decorative Stones

Page 6 of 10, showing 501 - 600 of 1000 stones.
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OUMNH number Name and quarry location Geological description
OUMNH number Name and quarry location Geological description
835stone 835 Granito nero, from between Aswan and Shellal District, Nile Valley, Egypt Hornblende biotite granite/granodiorite hybrid with white feldspar megacrysts. It is crossed by a pink granite (predominantly potash feldspar) vein.
836stone 836 Granito nero, from between Aswan and Shellal District, Nile Valley, Egypt Biotite granodiorite with a few megacrysts of pink potash feldspar; a variety of the Aswan granodiorite from the Precambrian basement rocks.
845stone 845 Granito nero, from between Aswan and Shellal District, Nile Valley, Egypt Biotite-bearing granodiorite with a few aligned feldspar megacrysts.
846stone 846 Granito nero, from between Aswan and Shellal District, Nile Valley, Egypt Biotite-bearing granodiorite with a few small pink K-feldsar megacrysts, and a vein of potash feldspar across the corner of the sample.
874stone 874 Granito orbiculare di Corsica, from shore of River Taravo, near Olmeto, Corse-du-Sud, Corsica, France Orbicular diorite, the layers composed of plagioclase, hornblende, or a combination of these minerals.
831stone 831 Granito rosso antico minuto, from between Aswan and Shellal District, Nile Valley, Egypt Fine-grained hornblende biotite muscovite granite.
832stone 832 Granito rosso antico minuto, from between Aswan and Shellal District, Nile Valley, Egypt Fine-grained hornblende biotite granite.
833stone 833 Granito rosso antico minuto, from between Aswan and Shellal District, Nile Valley, Egypt A fairly fine-grained hornblende biotite granite/granodiorite hybrid.
837stone 837 Granito rosso antico, sienite, from between Aswan and Shellal District, Nile Valley, Egypt Coarse-grained biotite granite with large megacrysts of pink K-felspar.
839stone 839 Granito rosso antico, sienite, from between Aswan and Shellal District, Nile Valley, Egypt Coarse-grained biotite granite with megacrysts of salmon K-felspar.
840stone 840 Granito rosso antico, sienite, from between Aswan and Shellal District, Nile Valley, Egypt Coarse-grained biotite granite with megacrysts of salmon K-felspar.
992stone 992 Granito rosso antico, sienite, possibly from between Aswan and Shellal District, Nile Valley, Egypt Fine-grained hornblende biotite granite-granodiorite.
828stone 828 Granito verde a erbetta, from Wadi Umm Wikala, near Wadi Semna, Eastern Desert. Egypt Fine to medium-grained metagabbro, with extensive alteration of augite to chlorite and some chloritisation around the edges of plagioclase feldspar crystals. Metallic pale yellow pyrite is present as scattered crystals.
825stone 825 Granito verde della Sedia di San Lorenzo, from Wadi Umm Wikala, near Wadi Semna, Eastern Desert. Egypt Fine to medium-grained gabbro or metagabbro (weakly metamorphosed) with some alteration of the green augite to brown?
819stone 819 Granito violetto, marmor Troadense, from Çigri Dâg, Ezine, Canakkale, Marmara; Turkey Medium-grained quartz monzonite with large violet-grey megacrysts of potash feldspar in a groundmass of quartz, plagioclase, biotite and hornblende.
856stone 856 Granito, probably granito di Corsica, from Corsica, France Coarse-grained granodiorite with megacrysts of pink potash-feldspar, rather smoky quartz, and accessory titanite.
407stone 407 Griotte, from the Haute Pyrénées, France Lower Devonian red nodular limestone, clay-rich matrix, with extensive solution seams and stylolites
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
785stone 785 Imperial porphyry, porfido bastardone, from Gebel Dokhan, Eastern Desert, Egypt Andesite-dacite porphyry; the 'bastardone' variety with white phenocrysts of plagioclase feldspar largely concentrated in scattered patches of brown groundmass. The purple colour of the greater part of this stone is due largely to trace piemontite, the manganese member of the epidote group, and indicates a degree of metamorphism.
786stone 786 Imperial porphyry, porfido bigio, from Gebel Dokhan, Eastern Desert, Egypt Andesite-dacite porphyry; pink to white phenocrysts of plagioclase feldspar and black euhedral crystals of hornblende in a grey-brown groundmass.
788stone 788 Imperial porphyry, porfido nero, from Gebel Dokhan, Eastern Desert, Egypt Andesite-dacite porphyry of white plagioclase phenocrysts in a black groundmass.
808stone 808 Imperial porphyry, porfido nero, from Gebel Dokhan, Eastern Desert, Egypt Andesite-dacite porphyry of white rectangular plagioclase phenocrysts in a dark grey groundmass.
783stone 783 Imperial porphyry, porfido rosso antico, from Gebel Dokhan, Eastern Desert, Egypt Andesite-dacite porphyry with pink phenocrysts of plagioclase feldspar. The purple colour is due largely to trace piemontite, the manganese member of the epidote group, and indicates a degree of metamorphism. It is from the Precambrian basement rocks.
784stone 784 Imperial porphyry, porfido rosso antico, from Gebel Dokhan, Eastern Desert, Egypt Andesite-dacite porphyry with patches of white phenocrysts of plagioclase feldspar. The purple colour is due largely to trace piemontite, the manganese member of the epidote group, indicating a degree of metamorphism. It is from the Precambrian basement rocks.
719stone 719 Jasper, locality unknown This appears to be a largely silicified oolitic ironstone or oolitic ironstone breccia. Swarms of sub-parallel dark brown fractures give the impression of wood grain.
705stone 705 Labradorite, from St Paul's Island, Labrador, Newfoundland, Canada Labradorite, a variety of plagioclase feldspar.
524stone 524 landscape marble, alberese di Ponte a Rignano, from Ponte a Rignano, Florence, Tuscany, Italy Micritic limestone or calcareous marl from the Cretaceous Alberese Formation, showing well-developed dendrites of manganese oxides.
208stone 208 Languedoc marble, from Caunes-Minervois, Carcassonne, Aude, France Devonian red limestone rich in crinoid debris, with prominent grey-white stromatactis and abundant stylolites.
787stone 787 Lapis ieracites, porfido verde egiziano, from Gebel Dokhan, Eastern Desert, Egypt Andesite-dacite porphyry of white plagioclase phenocrysts with epidotised rims in a greenish-black groundmass.
703stone 703 Lapis lazuli, from Kokcha Valley, Badakhshan, Afghanistan Rock composed of lazurite, probably with minor blue sodalite, and with flecks of pyrite and minor white calcite; from a marble deposit formed by contact metamorphism.
667stone 667 Lava di Borghetto, from Borghetto, Civita Castellana, Viterbo, Lazio, Italy Phonolite tephrite. A porphyritic rock with euhedral white megacrysts of leucite and scattered black pyroxene crystals in a fine-grained groundmass. The leucite megacrysts are cracked, sometimes concentrically zoned, and contain inclusions of pyroxene.
560stone 560 Lavagna antica, locality unknown Fine-grained siliceous rock with a few carbonate grains; The aggregates of orange-brown crystals are almost certainly relics of pyrite crystals; elsewhere, the pyrite is visible. Slate is not confirmed.
561stone 561 Lavagna di Cesena, from Cesena in Emilia, Forli, Emilia-Romagno, Italy Calcarenite with spar-filled fractures. Cubic pyrite crystals coat back of specimen.
562stone 562 Lavagna di Genoa, ardesia di Lavagna, from Genoa, Liguria, Italy Black slate. Fine-grained with fine layering and a few vein stringers parallel to the cleavage.
16stone 16 Lithographic limestone, pietra litografica, from the southern Franconian Alb (probably quarries at Solnhofen or Kelheim), Bavaria, Germany Upper Jurassic limestone from the Solnhofen Platternkalk Formation. A fossiliferous biomicrite with scattered acicular bioclasts (probably sponge spicules).
223stone 223 Lumachella antica, 'astracane dorato', from Henchir al Kasbat (the ancient Thuburbo Maius), Tunisia Fossiliferous limestone with abundant recrystallised/spar replaced bivalves and gastropods in a cream-coloured micrite and patchily calcarenite matrix.
218stone 218 Lumachella antica, occhio di pavone bianco, perhaps from Verona, Veneto, Italy Limestone; a fossiliferous micrite/microsparite crowded with recrystallised bivalve debris.
221stone 221 Lumachella antica, occhio di pavone bigio, from Kutluca, Izmit, Turkey Late Cretaceous limestone containing rudist bivalves, forams and other bioclasts.
219stone 219 Lumachella antica, occhio di pavone nero, locality unknown Limestone; a black biosparite matrix with abundant recrystallised bivalves.
217stone 217 Lumachella antica, occhio di pavone pavonazzo, from Kutluca, Izmit, Turkey Late Cretaceous limestone containing rudist bivalves, forams and other bioclasts.
222stone 222 Lumachella antica, occhio di pavone roseo, from Kutluca, Izmit, Turkey Late Cretaceous fossiliferous limestone with abundant recrystallised/spar replaced rudist bivalves.
220stone 220 Lumachella antica, occhio di pavone rosso, from Kutluca, Izmit, Turkey Late Cretaceous limestone containing rudist bivalves, forams and other bioclasts.
215stone 215 Lumachella antica, from Mégara, Attica, Greece Nummulitic limestone of Middle Eocene age.
258stone 258 Lumachella degli Appennini, from the Apennines, Italy Poorly sorted conglomerate with limestone and marble clasts together with scattered calcareous algal nodules and bivalves (oysters).
272stone 272 Lumachella del Ticino, from Ticino, Lombardy, Italy Limestone; a fossiliferous pelsparite with echinoderm debris and algal nodules, and with incipient stylolites.
290stone 290 Lumachella del Ticino, from Ticino, Lombardy, Italy Jurassic fossiliferous calcarenite with punctate brachiopods (Terebratulids) and ammonites.
240stone 240 Lumachella di Abruzzo, from Scontrone, L'Aquila, Abruzzo, Italy Limestone. A shell bed with abundant gastropods and large oysters. The matrix is grey biosparite crowded with bioclasts, predominantly molluscan, but also some small benthic forams.
242stone 242 Lumachella di Abruzzo, from Scontrone, L'Aquila, Abruzzo, Italy Limestone. A fossiliferous calcarenite with calcite cement, probably of Tertiary or Quaternary age. It contains large calcite oysters and high-spired gastropods with the original aragonite shell preserved.
269stone 269 Lumachella di Abruzzo, from Scontrone, L'Aquila, Abruzzo, Italy Tertiary or Quaternary fossiliferous calcarenite with oyster, heterodont bivalves, gastropods, echinoid spines and small benthic forams.
293stone 293 Lumachella di Abruzzo, from Scontrone, L'Aquila, Abruzzo, Italy Fossiliferous conglomerate with quartz-rich matrix and clasts of limestone, marble, calc-algae etc. Flattened out bivalves contain original aragonite. It is post-Cretaceous in age. Green/dark yellow brown areas are filler.
275stone 275 Lumachella di Canova, possibly from the province of Verona, Veneto, Italy; or Pietra Rosone di Trapani from Trapani, Sicily, Italy Limestone containing algal nodules with abundant benthic forams in the matrix. The nodules have bryozoan/molluscan nuclei, and have extensive stylolitization and suturing of clast contacts.
243stone 243 Lumachella di Domagiano, from 'Domagiano', Verona, Veneto, Italy Limestone, with pel-sparite matrix, crowded with recrystallised spar-replaced whole and fragmentary bivalves (perhaps rudists). It shows intraclast suturing and stylolites.
276stone 276 Lumachella di Frascati, from Frascati, Rome, Lazio, Italy Algal (?or cyanobacterial) limestone with sparse benthic forams and tubules probably of girvanellid algae. It has calcite-lined and sparry calcite-filled voids.
236stone 236 Lumachella di Lugano, from Lake Lugano, Varese, Lombardy, Italy Fossiliferous biosparite limestone with abundant molluscan debris, peloids and coated grains, and a large ?cephalopod. Stylolites contain red filler/polishing compound.
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.
271stone 271 Lumachella di Milano, from Milan, Lombardy, Italy Burrowed fossiliferous micritic limestone with abundant molluscan debris; it is heavily fractured, and fractures are filled with sparry calcite.
336stone 336 Lumachella di San Vitale, mischio di Mizolle, from Mizolle, Val Pantena, Verona, Veneto, Italy Limestone; a fossiliferous micrite/biosparite with debris of the the lower Jurassic reef-forming 'Lithiotis' bivalve.
267stone 267 Lumachella di San Vitale, from Lugo di Grezzana, Val Pantena, Verona, Veneto, Italy Limestone; a fossiliferous micrite with debris of the Lower Jurassic reef-forming bivalves ‘Lithiotis’, probably Lithiotis problematica, as well as other bivalves, and gastropods.
239stone 239 Lumachella di San Vitale, from Pigozzo, Val Squaranto; Verona, Veneto, Italy Fossiliferous microsparite limestone, the matrix rich in bioclasts. Large, fragmentary bivalves are the reef-forming bivalve Lithiotis. They are recrystallised/replaced by sparry calcite, but original calcite shells survive in places.
273stone 273 Lumachella di San Vitale, from San Vitale di Roverè, Verona, Veneto, Italy Fossiliferous limestone with large fragments of 'Lithiotis' bivalve. Some contain original calcite microstructure, others are replaced by recrystallised calcite. It has many calcite-filled stylolites and fractures.
337stone 337 Lumachella di San Vitale, from the province of Verona, Veneto, Italy Fossiliferous limestone with a biosparite matrix. Large shells of 'Lithiotis ' bivalves are filled with calcite spar. Stylolites are evident.
342stone 342 Lumachella di San Vitale, from the province of Verona, Veneto, Italy Fossiliferous biosparite limestone with large fragments of 'lithiotis' bivalves. Original aragonite shells are replaced by sparry calcite. Some primary prismatic calcite survives. Note the calcite filled fractures and stylolites.
548stone 548 Lumachella di San Vitale, from the province of Verona, Veneto, Italy Not Gypsum. A Lower Jurassic limestone; matrix is fossiliferous micrite/microspar with molluscan debris. The large white intraclasts are heavily recrystallised shells of 'Lithiotis' bivalves. It has abundant stylolites.
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.
366stone 366 Lumachella di San Vitale, from Valpantena, Verona, Veneto, Italy Fossiliferous limestone. Large shells of 'Lithiotis' bivalve and other skeletal elements are replaced by calcite spar. The matrix is biosparite. Note the stylolites.
238stone 238 Lumachella di Ticino, from Ticino, Lombardy, Italy Limestone; a fossiliferous nodular peloidal biomicrite, in places a biopelsparite, with large, spar-replaced gastropods and other molluscs. It has well-developed stylolites.
244stone 244 Lumachella di Trento, from Trent, Trentino-Alto Adige, Italy Fossiliferous limestone with spar-replaced gastropods, and terebratulid brachiopods. It was probably originally peloidal, with a sparry calcite cement.
279stone 279 Lumachella di Valpolicella, perhaps giallo reale, from Valpolicella, Verona, Veneto, Italy Biosparite limestone with abundant large benthic forams, algal nodules and grains, and molluscan debris.
254stone 254 Lumachella di Vialeta, from Vialeta, Verona, Veneto, Italy Synsedimentary breccia of fossiliferous bioclast-rich microsparite limestone; the matrix is intraclast-rich with spar cement.
230stone 230 Lumachella nera, locality unknown Fossiliferous biosparite limestone with articulate brachiopods (pentamerids?, some wholly or partially spar-infilled), solitary corals, and crinoid debris. It is of Upper Palaeozoic age.
228stone 228 Lumachella orientale, from Henchir Kasbat (the ancient Thuburbo Maius), Tunisia Fossiliferous biosparite limestone. A lumachelle of rolled, predominantly bivalve debris, recrystallised in part, and with subsidiary other skeletal debris.
229stone 229 Lumachella orientale, from Henchir Kasbat (the ancient Thuburbo Maius), Tunisia Fossiliferous biosparite limestone. A lumachelle of rolled, predominantly bivalve debris, recrystallized in part, and with subsidiary other skeletal debris.
226stone 226 Lumachella rosea, from Kairouan, Tunisia Middle Eocene nummulitic limestone. A fossiliferous biomicrite with abundant nummulites, subsidiary sponge, mollusc, and serpulid debris. Fractures are calcite-filled.
232stone 232 Lumachella rosea, from Kairouan, Tunisia Middle Eocene nummulitic limestone. A fossiliferous biomicrite with abundant nummulites, subsidiary sponge, mollusc and serpulid debris.
292stone 292 Lumachella rossa di Milano, from Milan, Lombardy, Italy Limestone. Burrowed fossiliferous micrite crowded with molluscan and other skeletal debris. It is possibly part of a hard ground.
266stone 266 Lumachella rossa di Verona, from Verona, Veneto, Italy Limestone. The coarse-grained part of this bio-pel sparite has coated bioclasts (forams, shell fragments, algal fragments) with some molluscan debris. The fine-grained part is a fossiliferous micrite with large bioclasts of the above, together with whole and fragmentary spar-replaced bivalves. Note the colour banding normal to bedding, and the spar-filled fractures.
231stone 231 Lumachellone antico, locality unknown Limestone; fossiliferous biosparite with large gastropods, perhaps Actaeonellid gastropods.
50stone 50 Mandolà di monte Baldo, from Monte Baldo, Verona, Veneto, Italy Nodular/burrowed bioclast-rich microsparite limestone with stylolites.
49stone 49 Mandolà di Sant'Ambrogio di Valpolicella, nembro rosato, from San Ambrogio di Valpolicella, Verona, Veneto, Italy Burrowed nodular biomicrite limestone crowded with skeletal grains, and with stylolite development around the nodules. Dark brown area is wax filler.
200stone 200 Mandolato di Carteletto, from the area north of Verona, perhaps Castelletto di Brenzone, Verona, Veneto, Italy; or from Brentónico, Trentino, Trentino-Alto Adige, Italy Fossiliferous burrowed biomicrite limestone crowded with bioclasts, spar-filled bivalve and gastropod shells. Colour mottling is diagenetic.
428stone 428 Mandolato di Lubiara, nembro rosato, from Lubiara, Caprino Veronese, Verona, Veneto, Italy Upper Jurassic or Cretaceous burrowed nodular biomicrite limestone crowded with skeletal grains. Note the extersitu stylolite development.
195stone 195 Mandolato di Torbe, from Torbe, Verona, Veneto, Italy Pelagic limestone. Burrowed nodular biomicrite crowded with skeletal grains, and with extersitu stylolite development. Dark brown is filler/polishing compound.
516stone 516 Mandolato di Verona, from Verona, Veneto, Italy Limestone. A burrowed biomicrite with abundant planktonic forams and calcispheres, cut by a calcite-filled fracture system and stylolites.
184stone 184 Marmo bianco dell'Alpi from the Alps Medium-grained dolomite marble, very heavily fractured, the fractures infilled with transparent calcite with brown ferruginous tinting.
17stone 17 Marmo bianco di Fuligno, from Foligno, Perugia, Umbria, Italy Burrowed micritic limestone, heavily fractured and stylolitised.
21stone 21 Marmo bianco di Malcesine, from Malcesine, Verona, Veneto, Italy Fine-grained limestone (micrite/microsparite) with burrows and scattered large bioclasts, including the aptychi of ammonites. Probably Cretaceous age.
20stone 20 Marmo bianco di Parma, from Parma, Italy (not confirmed) White fine-grained limestone (micrite/micosparite) with abundant tiny bioclasts including calispheres/radiolarians, and with prominent stylolites.
10stone 10 Marmo bianco di Pont Canavese, from Pont Canavese, Turin, Piedmont, Italy Medium-grained calcite marble
137stone 137 Marmo bianco e giallo, breccia nuvolata, locality unknown. A fractured, stylolitised recrystallised limestone or marble, with Liesegang rings of ferruginous colouring.
60stone 60 Marmo carnagione di Camerino; Camerino, Macerata, Marches, Italy may be the correct locality. A pink pelagic limestone from the Scaglia Rossa Formation (Upper Cretaceous-Eocene). It is a bioturbated biomicrite crowded with planktonic forams and calcispheres with some echinoderm and molluscan debris.
58stone 58 Marmo carnagione di Perugia, perhaps from Monte Malbe, near Corciano, Perugia, Umbria, Italy. Pelagic limestone from the Upper Cretaceous to Eocene Scaglia Rossa Formation. A bioturbated fossiliferous biomicrite crowded with planktonic forams, calcispheres, and other small bioclasts. It is crossed by slender healed fractures, and stylolites.
54stone 54 Marmo carnagione di Terni, perhaps from the province of Terni, Italy Limestone, probably from the Scaglia Rossa Formation (Upper Cretaceous). A bioturbated fossiliferous biomicite with abundant tiny planktonic forams and calcispheres. Bioclasts are calcite filled. Many sub-parallel slender calcite-filled fractures are evident, as are a few manganese oxide dendrites.
55stone 55 Marmo carnagione, marmo cannellino chiaro, probably from the Umbria or Marches regions of the Apennines, Italy Pelagic limestone from the Scaglia Rossa Formation (Upper Cretaceous-Eocene), mottled grey with a rich fauna of foraminifera and other plankton.
56stone 56 Marmo carnagione, marmo cannellino scuro, probably from the Umbria or Marches regions of the Apennines, Italy Pelagic limestone from the Upper Cretaceous to Eocene Scaglia Rossa Formation. A bioturbated fossiliferous biomicrite with abundant planktonic forams, calcispheres and other skeletal debris. It has calcite filled structures and stylolites, and pink coloration constrained by a slender calcite-cemented fracture ('paesina' effect).
53stone 53 Marmo carnagione, persichino di Mazzurega, from Mazzurega, near Fumane, Verona, Veneto, Italy Limestone from the Upper Cretaceous Scaglia Rossa Formation. A bioturbated fossiliferous biomicrite with abundant planktonic forams and calcispheres, and with a few stylolites.
51stone 51 Marmo carnagione, ‘rosetta di Bergamo’; the province of Bergamo, Italy, is not confirmed as the locality. Medium-grained white calcite marble. A metamorphosed sparite limestone preserving evidence of burrowing. It is almost white; the pink tint comes from discoloured grain-filler.
268stone 268 Marmo castagne petrificate di Milano, from Milan, Lombardy, Italy Mesozoic fossiliferous burrowed micritic limestone crowded with terebratulid brachiopods, of which some are spar-infilled. It has prominent stylolites.
150stone 150 Marmo cenerino di Monte Bolca, from Monte Bolca, Val d'Illasi, Verona, Veneto, Italy Largely recrystallised limestone with relict larger benthic forams (alveolines). It is heavily styolitised.
263stone 263 Marmo cenerino di Monte Bolca, from Monte Bolca, Val d'Illasi, Verona, Veneto, Italy A well-sorted bioclastic limestone with micrite matrix.
277stone 277 Marmo conchigliare delle Alpi, from the Alps A calcarenite, probably of Tertiary age, with molluscan, algal, polychaete and other bioclasts, and common small benthic forams.
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