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. |
349 |
Alabastro di Pierosara, from Pierosara, near Fabriano, Ancona, Marches, Italy |
Compact travertine composed of coarse columnar calcite. |
935 |
Alabastro antico, alabastro verde, locality unknown |
Compact travertine composed of coarse-grained calcite. |
351 |
'Alabastro bianco d'Orte', probably Egyptian alabaster,
Coarse to very coarse compact crystalline calcite, with a little banding suggesting this is a travertine. |
|
310 |
'Alabastro fiorito', locality unknown |
Compact very fine to fine-grained banded calcite travertine. |
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. |
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. |
353 |
Alabastro eburneo d'Orte from Orte, Viterbo, Lazio, Italy |
A compact, fine-grained and finely banded, pure calcite travertine. |
307 |
'Alabastro fiorito', locality unknown |
Compact medium- to fine grained banded travertine with some ferruginous staining. |
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. |
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. |
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. |
324 |
Alabastro a nuvole, locality unknown |
Medium to coarse-grained compact banded travertine with ferruginous orange and, in a few places, red colouring. |
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. |
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. |
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. |
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. |
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. |
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. |
14 |
Travertino di Tivoli, travertino Romano, from Tivoli, Lazio, Italy |
Porous banded travertine deposit, specimen cut parallel with the bedding. |
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. |
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. |
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 |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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.
|
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
4 |
almost certainly Proconnesian marble, marmo di Proconneso, from the island of Marmara, Balıkesir, Turkey |
Coarse-grained calcite marble with grey graphite-bearing banding. |
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. |
6 |
‘Marmo Lesbio’, most probably Thasian marble, marmo Thaso, from Cape Vathy, Thasos (Thassos), East Macedonia an |
Coarse-grained calcite or dolomite marble. |
5 |
Thasian marble, marmo Thaso, most probably from Cape Vathy, Thasos (Thassos), East Macedonia and Thrace, Greece |
Coarse-grained dolomite marble. |
3 |
most probably Pentelic marble, marmo Pentelico, from Mt Pentéli, Attica, Greece |
Fine-grained calcite marble. |
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 |
9 |
Carrara marble, marmo di Carrara, statuario, almost certainly from Cararra,Tuscany Italy. |
Fine-grained calcite marble |
11 |
Statuary marble, marmo statuario, almost certainly statuario di Monte Altissimo, from Monte Altissimo, north of Seravezza, Lucca, Tuscany, Italy |
Fine-grained calcite marble |
2 |
'Marmo porino', perhaps from the Island of Páros, Cyclades, South Aegean, Greece |
Medium-grained calcite marble. |
10 |
Marmo bianco di Pont Canavese, from Pont Canavese, Turin, Piedmont, Italy |
Medium-grained calcite marble |
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 |
7 |
most probably Thasian marble, marmo Thaso, from Cape Vathy, Thasos (Thassos), East Macedonia and Thrace, Greece |
Medium-grained dolomite marble. |
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. |
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. |
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. |
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. |
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. |
196 |
Fior di persico, from Seravezza, Lucca, Tuscany, Italy |
Marble; a tectonised and sheared limestone breccia-conglomerate. |
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. |
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. |
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. |
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. |
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. |
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. |
603 |
Serpentina di Cagliari, from Cagliari, Sardinia, Italy |
Serpentinite crossed by a reticulated array of veins rich in black oxide minerals. |
637 |
Pietra del Vesuvio, from Mt. Vesuvius, Naples, Campania, Italy |
Silicate-rich skarn, containing green amphibole and fawn-coloured feldspar. Brown areas are filler. |
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?). |
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. |
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. |
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). |
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. |
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. |
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. |
551 |
Fluorite, probably from Italy |
Banded colourless fluorite with inclusions of pyrite, and ?clay. |
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. |
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. |
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. |
543 |
Blue John fluorite, from Castleton, Derbyshire, England |
Hydrothermal vein deposit of colour-zoned purple-blue/colourless fluorite, the variety known as Blue John. |
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. |
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. |
517 |
Rosso di Terni, from Terni, Umbria, Italy |
Limestone. A stylolitised burrowed biomicrite crowded with planktonic forams, calcispheres and other small bioclasts. |
545 |
Gesso di Volterra, alabastro di Volterra, from Volterra, Pisa, Tuscany, Italy |
Fine-grained compact gypsum (alabaster). |
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. |
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). |
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). |
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). |
546 |
Gesso di Iesi, alabastro di Iesi, from Iesi, Ancona, Marches, Italy |
Fine-grained compact gypsum (alabaster) - nodular mass, fibrous towards margins. |
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. |
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. |
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. |