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
343stone 343 Alabastro gioia del ponte di Vezia, from Verona, Veneto, Italy Compact travertine composed of very coarse columnar calcite. The surface has a particularly waxy surface indicating it may have been acid-etched.
349stone 349 Alabastro di Pierosara, from Pierosara, near Fabriano, Ancona, Marches, Italy Compact travertine composed of coarse columnar calcite.
935stone 935 Alabastro antico, alabastro verde, locality unknown Compact travertine composed of coarse-grained calcite.
351stone 351 'Alabastro bianco d'Orte', probably Egyptian alabaster, Coarse to very coarse compact crystalline calcite, with a little banding suggesting this is a travertine.
310stone 310 'Alabastro fiorito', locality unknown Compact very fine to fine-grained banded calcite travertine.
358stone 358 Alabastro a tartaruga, from Montauto, Castelfiorentino, Pisa, Tuscany, Italy or perhaps Iano di Montaione, Florence, Tuscany, Italy Compact travertine composed of fine acicular calcite crystals.
940stone 940 Alabastro a tartaruga, from Montauto, Castelfiorentino, Pisa, Tuscany, Italy or perhaps Iano di Montaione, Florence, Tuscany, Italy Compact travertine composed of very fine acicular calcite crystals.
353stone 353 Alabastro eburneo d'Orte from Orte, Viterbo, Lazio, Italy A compact, fine-grained and finely banded, pure calcite travertine.
307stone 307 'Alabastro fiorito', locality unknown Compact medium- to fine grained banded travertine with some ferruginous staining.
312stone 312 Egyptian alabaster, alabastro cotognino, from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. Fine to medium-grained compact banded travertine, almost entirely composed of calcite; note presence of slender orange ferruginous bands which are quite characteristic of the Egyptian stone.
313stone 313 Egyptian alabaster, alabastro cotognino, from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. Fine to medium-grained compact banded travertine, almost entirely composed of calcite; note presence of slender orange ferruginous bands which are quite characteristic of the Egyptian stone.
938stone 938 Alabastro di Palestrina, from Palestrina, Rome, Lazio, Italy Compact banded travertine composed of acicular calcite crystals, with a ferruginous micritic infill between grains. Cavities in the surface are filled with brown wax, intensifying the colour a little.
324stone 324 Alabastro a nuvole, locality unknown Medium to coarse-grained compact banded travertine with ferruginous orange and, in a few places, red colouring.
294stone 294 Egyptian alabaster, alabastro cotognino, from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. Medium-grained compact banded travertine, almost entirely composed of calcite, but note slender orange ferruginous bands often seen in this stone.
295stone 295 Egyptian alabaster, alabastro cotognino, from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. Medium-grained compact banded travertine, almost entirely composed of calcite. Dark yellow-brown wax filler covers a very narrow ferruginous orange-brown band.
298stone 298 Egyptian alabaster, alabastro cotognino, from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. Medium-grained compact banded travertine, very pure and almost entirely composed of calcite.
299stone 299 Egyptian alabaster, alabastro cotognino, from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. Medium-grained compact banded travertine, almost entirely composed of calcite; note slender orange ferruginous bands often seen in this stone. Grey band at one corner is a filler.
316stone 316 Alabastro fiorito, almost certainly from the Pamukkale area, Denizli, Turkey Medium-grained compact banded travertine composed mainly of calcite, in some bands as colourless prismatic crystals. It is coloured by iron oxides, the bushy dendritic growths probably generated by cyanobacterial action.
317stone 317 Alabastro fiorito, from Pamukkale area, Denizli, Turkey Medium-grained compact banded travertine composed mainly of calcite. It is coloured by iron oxides, the bushy dendritic growths probably generated by cyanobacterial action.
14stone 14 Travertino di Tivoli, travertino Romano, from Tivoli, Lazio, Italy Porous banded travertine deposit, specimen cut parallel with the bedding.
331stone 331 Alabastro a pecorella, from Aïn Tekbalet district, Oran, Algeria. A recrystallised compact banded travertine composed of medium and coarse-grained granular calcite but retaining bushy developments of iron oxides, predominantly red hematite.
335stone 335 Alabastro di Sestri, from Sestri Ponente, Genoa, Liguria, Italy Iron-stained impure tufa with coatings of banded compact travertine composed of very fine fibrous crystals of calcite.
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
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.
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.
644stone 644 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Olivine basalt/ankaramite. An altered porphyritic basic volcanic/dyke rock with phenocrysts of subhedral to euhedral pyroxene, olivine, and plagioclase. Calcite fills the amygdales.
655stone 655 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Olivine basalt/trachybasalt. Dark grey porphyritic lava with phenocrysts of plagioclase, olivine and pyroxene (all variably altered) in a fine-grained equigranular matrix. Rounded vesicles have zoned infills of hematite and calcite.
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.
657stone 657 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Ignimbrite. A streaky-textured volcaniclastic rock containing carbonate minerals. It has crystals and crystal clusters of feldspar, pyroxene, opaque mineral, and possibly altered olivine. Half of the specimen has a faint shard structure and possibly some flattened pumice clasts.
660stone 660 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Tuff or basic lava. A dull red, equigranular rock composed principally of pale pink stained feldspar set in very fine dark matrix, with occasional pyroxenes up to 10mm. It has amygdales containing zoned carbonate and red oxide.
656stone 656 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Tuff. Moderately sorted coarse-grained dark crystal-rich ash with rounded grains of plagioclase, pyroxene, olivine, and rarer grains of an opaque oxide mineral. It has an overall basaltic composition, and may be the unaltered equivalent of no. 654.
650stone 650 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy An altered crystal-rich ignimbrite. Amygdaloidal microporphyritic rock clasts with altered subhedral phenocrysts of a ferromagnesian mineral and feldspar, are set in very fine-grained dark matrix. Amygdales are rounded or irregular in shape, and many contain carbonate infills which have a banded agate-like appearance. The streaky appearance of paler patches suggests a flattened shard structure.
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.
642stone 642 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Ignimbrite. A devitrified welded rock containing megacrysts of simple and lamellar-twinned feldspars, smaller crystals of ferromagnesian minerals, and fine-grained rounded clasts. The compression of the shards is evident in the side of the specimen.
643stone 643 Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy Ignimbrite. A devitrified welded rock containing megacrysts of simple and lamellar-twinned feldspars, smaller crystals of ferromagnesian minerals, and fine-grained rounded clasts. The compression of the shards is evident in the side of the specimen.
654stone 654 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy An altered pumiceous tuff. Brick-red, carbonate-bearing medium to fine-grained, well-sorted rock with a few larger subangular pumice clasts. No. 656 may be this rock in an unaltered state.
658stone 658 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Basaltic crystal tuff. A dark grey compact well-sorted rock comprising principally plagioclase with minor subhedral crystals of dark green pyroxene and rare partially altered olivine.
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.
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.
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.
649stone 649 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Trachyandesite/trachyte. A pale grey porphyritic vocanic or dyke rock with subhedral laths of feldspar showing some alignment, set in a groundmass of feldspar and minor ferromagnesian minerals.
662stone 662 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy Mixed rock, possibly from a junction of intermediate and basic magmas. Patches of paler grey microporphyritic rock consisting of feldspars and sub-aligned euhedral pyroxene crystals. These have diffusion rims (containing carbonate) at contacts with the dark streaky-textured coarser rock, which contains larger crystals of feldspar and pyroxene.
653stone 653 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy An intermediate volcanic rock with abundant phenocrysts of feldspar and sparse pyroxene crystals set in very fine grained grey matrix. The feldspars are strongly aligned. They are probably plagioclase, and so the rock may be a porphyritic andesite.
661stone 661 Pietra dell'Etna, from Mt. Etna, Catania, Sicily, Italy A porphyritic trachyte, consisting of rounded or stubby white feldspars, glassy laths of plagioclase showing alignment, and subhedral elongate crystals of pyroxene.
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.
4stone 4 almost certainly Proconnesian marble, marmo di Proconneso, from the island of Marmara, Balıkesir, Turkey Coarse-grained calcite marble with grey graphite-bearing banding.
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.
6stone 6 ‘Marmo Lesbio’, most probably Thasian marble, marmo Thaso, from Cape Vathy, Thasos (Thassos), East Macedonia an Coarse-grained calcite or dolomite marble.
5stone 5 Thasian marble, marmo Thaso, most probably from Cape Vathy, Thasos (Thassos), East Macedonia and Thrace, Greece Coarse-grained dolomite marble.
3stone 3 most probably Pentelic marble, marmo Pentelico, from Mt Pentéli, Attica, Greece Fine-grained calcite marble.
8stone 8 Statuary marble, marmo statuario, most probably from Carrara, Seravezza or elsewhere in the Apuan Alps of Tuscany, Italy; but could also be from Mt Pentéli, Attica, Greece Fine-grained calcite marble
9stone 9 Carrara marble, marmo di Carrara, statuario, almost certainly from Cararra,Tuscany Italy. Fine-grained calcite marble
11stone 11 Statuary marble, marmo statuario, almost certainly statuario di Monte Altissimo, from Monte Altissimo, north of Seravezza, Lucca, Tuscany, Italy Fine-grained calcite marble
2stone 2 'Marmo porino', perhaps from the Island of Páros, Cyclades, South Aegean, Greece Medium-grained calcite marble.
10stone 10 Marmo bianco di Pont Canavese, from Pont Canavese, Turin, Piedmont, Italy Medium-grained calcite marble
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
7stone 7 most probably Thasian marble, marmo Thaso, from Cape Vathy, Thasos (Thassos), East Macedonia and Thrace, Greece Medium-grained dolomite marble.
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.
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.
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.
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.
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.
196stone 196 Fior di persico, from Seravezza, Lucca, Tuscany, Italy Marble; a tectonised and sheared limestone breccia-conglomerate.
558stone 558 'Arenaria di Corsica'; Corsica, France, is not confirmed. Impure medium-grained calcite marble, containing disseminated crystals of green chlorite and brown ferruginous matter which show a marked foliation.
582stone 582 Verde tenero di Corsica, from Corsica, France Fine-grained quartz (chalcedony) rock, perhaps with relic textures of a granitic rock. Dendritic goethite emanates from the many fractures.
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.
965stone 965 Serpentina di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy Perhaps a serpentinised lherzolite. Large pale crystals look like enstatite as porphyroclasts in a deformed and recrystallised matrix.
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.
966stone 966 Serpentina di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy Serpentinite with cracked and serpentinised pseudomorphs of olivine and pink bastitised pyroxene. Planar fabric is visible on the sides of the sample, possibly spinel, but now altered. It is permeated by white calcite. The protolith was possibly a spinel peridotite.
603stone 603 Serpentina di Cagliari, from Cagliari, Sardinia, Italy Serpentinite crossed by a reticulated array of veins rich in black oxide minerals.
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.
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.
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).
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.
596stone 596 Serpentina verde di Piombino, from Piombino, Livorno, Tuscany, Italy Green and white-banded L-S tectonite with low-strain augen. It is made almost entirely of narrow prismatic minerals, probably actinolite (green) and clinozoisite (white), strongly aligned in foliae, at high angles to fabric in augen. There are possibly some pyroxene relics in augen. These minerals suggest it could be derived from a rather melanocratic gabbro.
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.
551stone 551 Fluorite, probably from Italy Banded colourless fluorite with inclusions of pyrite, and ?clay.
539stone 539 Fluorite with galena and baryte, from Crich, Derbyshire, England Hydrothermal vein deposit of colourless to yellow iron-stained fluorite with galena and white crested baryte. Fluorite zoned with inclusions of marcasite/pyrite.
540stone 540 Fluorite, Blue John, from Derbyshire, England Hydrothermal vein deposit of fluorite. The narrow purple-blue colour zone indicates it is the Blue John variety.
541stone 541 Fluorite, Blue John, from Castleton, Derbyshire, England Hydrothermal vein deposit of colour-zoned purple-blue/colourless fluorite, the variety known as Blue John. It has some yellow ferruginous staining.
543stone 543 Blue John fluorite, from Castleton, Derbyshire, England Hydrothermal vein deposit of colour-zoned purple-blue/colourless fluorite, the variety known as Blue John.
542stone 542 Fluorite, from Crich, Derbyshire, England Hydrothermal vein deposit of colourless/iron-stained fluorite, in places showing zoning with inclusions of pyrite/marcasite. It also contains sparse euhedral crystals of sphalerite.
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.
517stone 517 Rosso di Terni, from Terni, Umbria, Italy Limestone. A stylolitised burrowed biomicrite crowded with planktonic forams, calcispheres and other small bioclasts.
545stone 545 Gesso di Volterra, alabastro di Volterra, from Volterra, Pisa, Tuscany, Italy Fine-grained compact gypsum (alabaster).
544stone 544 Gesso di Castellina Marittima, alabastro di Castellina Marittima, alabastro di Volterra, from Castellina Marittima, Pisa, Tuscany, Italy Fine-grained compact gypsum (alabaster) with calcite-filled fractures.
547stone 547 Gesso di Matelica, alabastro di Matelica, from Matelica, Macerata, Marches, Italy Crystals of gypsum as dark 'spots', and small fragments of micritic limestone, in a matrix of fine-grained compact gypsum (alabaster).
549stone 549 Gesso di Matelica, alabastro di Matelica, from Matelica, Macerata, Marches, Italy Micritic limestone containing bands of gypsum crystals, as spots and patches in fine-grained compact gypsum (alabaster).
550stone 550 Gesso di Matelica, alabastro di Matelica, from Matelica, Macerata, Marches, Italy Micritic limestone containing bands of gypsum crystals, as spots and patches in fine-grained compact gypsum (alabaster).
546stone 546 Gesso di Iesi, alabastro di Iesi, from Iesi, Ancona, Marches, Italy Fine-grained compact gypsum (alabaster) - nodular mass, fibrous towards margins.
346stone 346 Alabastro di Pisa, probably Alabastro di Volterra, from Pisa, Tuscany, Italy, and very probably from the area around Volterra or Castellina Marittima. Fine-grained compact gypsum, the variety which geologists now call alabaster. A vein of fibrous gypsum crosses the side of the specimen.
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.
527stone 527 Calcare compatta di Pisa, from Pisa, Tuscany, Italy Micritic limestone containing scattered grains of quartz. Dendritic growths of manganese/iron oxides emanate from fractures and form discrete spots, and are particularly well developed on the unsawn reverse of the sample. Brown areas are filler/polishing compound.
Page 7 of 10, showing 601 - 700 of 1000 stones.
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