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. |
691 |
Breccia di Torrita, from Torrita Tiberina, near Rome, Lazio, Italy |
Polymict conglomerate of limestone pebbles, bordering on compact calcite travertine. The cement is calcarenite. There is extensive brown filler. |
302 |
Alabastro, cotognino a onde, locality not known. Perhaps from Hatnub, Mallawi, or another location in the Nile valley, Eastern desert, Egypt. |
Compact banded travertine cut parallel to the banding, composed of medium-grained columnar/granular calcite, with a few scattered aggregates of acicular goethite or manganese oxide crystals. Some of the sparry limestone host rock is present. Grey patches contain clay and other debris. Small pink area is filler. |
930 |
Alabastro fortezzino, probably from one of several quarries at Hatnub, Mallawi, and other locations in the Nile valley, Eastern desert, Egypt. |
Fine-grained compact travertine with some slender orange bands, hosted in a nummulitic limestone. |
322 |
Alabastro a giaccione, locality unknown |
Compact finely banded travertine composed of coarsely crystalline brown calcite coating a fossiliferous limestone. Note the abundant fractures. |
352 |
'Alabastro dorato d'Orte', locality unknown |
Coarse to very coarse nearly transparent granular calcite, perhaps a hydrothermal vein deposit rather than a travertine. Some grey micritic limestone matrix is present which contains white grains probably of algae. |
936 |
Alabastro antico, locality unknown |
Limestone breccia. Calcite travertine clasts, and a few gastropod shells, in a micritic (peloidal in places) matrix. |
441 |
Breccia del lago di Como, from Lake Como, Como, Lombardy, Italy |
Peloidal limestone breccia. The matrix is pale brown transparent calcite, as compact banded travertine in places. Note extensive brown filler/polishing compound. |
339 |
Alabastro di Palermo, from Palermo, Sicily, Italy |
Coarse-grained calcite travertine deposit on a bioclastic limestone. Matrix is a calc-rudite-limestone conglomerate dominated by large benthic forams and limestone intraclasts of calcareous algae. Note the stylolites. |
341 |
marmo rosa dell' Alcenago, from Alsenaso, Val Pantena, Verona, Veneto, Italy |
Not ‘alabaster’. A fine-grained calcarenite limestone. |
509 |
'Argilla di Terni', from Terni, Umbria, Italy; or may be Tivoli, Roma, Lazio, Italy |
Burrowed micrite/microsparite limestone with abundant calcispheres and conspicuous dissolution fabrics (dark seams). |
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. |
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. |
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. |
63 |
Porporina di villa Adriana, locality unknown |
Hematite-rich banded limestone with some colourless sparry calcite-filled veins, and abundant cavities which are filled with wax on polished surfaces. Probably extensively recrystallised. |