900 |
Granito di Napoli, from Naples, Campania, Italy |
Biotite tonalite. Coarse-grained, with a gneisssose structure developed at one end of specimen. Mica shows rusty-coloured alteration. |
899 |
'Granito di Napoli', locality unknown |
Pink granite gneiss, augen are recrystallised potash feldspar. The quartz is rather finely recrystallised. |
898 |
Granito delle Alpi, from the Alps |
Biotite monzonite. Coarse-grained mottle brown and white rock with mafics>felsics and minor quartz. Pale brown alteration of mica. |
897 |
Corsican granite, granito di Corsica, from Corsica, France |
Granite gneiss with large porphyroblasts of potassium feldspar. |
896 |
Granito delle Alpi, from the Alps |
Metadiorite with distinct foliation. Brown areas are polishing compound/filler. |
895 |
Granito delle Alpi, from the Alps |
Foliated metadiorite or metagabbro with a coarse, ferromagnesium-rich band traversed by shear lines rich in dark mafic minerals, containing megacrysts/augen of plagioclase. |
894 |
Possibly granito di Corsica from Corsica, France, but more probably bianco Montorfano, from Montorfano, Novara, Piedmont, Italy |
Coarse hornblende biotite granite with accessory apatite and titanite. |
893 |
Baveno granite, rosa Baveno, from Baveno, Novara, Piedmont, Italy |
Coarse hornblende granite with pale pink perthitic potash-feldspar. |
892 |
Bianco Montorfano, from Montorfano, Novara, Piedmont, Italy |
Hornblende biotite granite. |
891 |
Granito delle Alpi, from the Alps |
Fine to medium-grained granite showing a streaky texture; with pink perthitic potash-feldspar and white plagioclase. |
890 |
Granito delle Alpi, from the Alps |
Grey microgranodiorite with ferromagnesian-rich irregular patches. Veinlets and cavities are coloured by brown filler/polishing compound. Alignment of biotite crystals gives distinct foliation, evident on sides of specimen. |
889 |
Granito delle Alpi, from the Alps |
Coarse pale grey granodiorite displaying faint foliation. |
888 |
Granito delle Alpi, from the Alps |
Medium-grained quartz diorite. |
887 |
Corsican granite, granito di Corsica, from Corsica, France |
Porphyritic microdiorite, probably plagioclase/biotite, over much of the specimen. Replacement of feldspar by aggregates of epidote is gradational in places, but sharp across a 1mm wide sheer zone or veinlet. |
886 |
Pietra di Malanaggio, from Malanaggio, Val Chisone, Piedmont, Italy |
A foliated, recrystallised medium-grained meta-granodiorite. |
885 |
Granito delle Alpi, from the Alps; or perhaps from Predazzo, Trentino or elsewhere in Trentino-Alto Adige, Italy |
Coarse-grained quartz diorite with pale green plagioclase. Brown is filler/polishing compound. |
884 |
Granito delle Alpi, from the Alps or possibly Bombiana, Bologna, Emilia-Romagna, Italy |
Coarse foliated hornblende diorite with chloritic inclusions in the plagioclase. |
883 |
Granito delle Alpi, from the Alps |
Coarse foliated granodiorite with prominent pink potash-feldspar; plagioclase is pale green. |
882 |
Granito delle Alpi, from the Alps; or perhaps granito bigio dell'Elba, from the island of Elba, Livorno, Tuscany, Italy |
Medium-grained grey granodiorite with coarser patches and detached plagioclase megacrysts. Perthitic structure of the megacrysts gives a pale blue-grey iridescence. |
881 |
Pietra di Malanaggio, from Malanaggio, Val Chisone, Piedmont, Italy |
Grey medium-grained foliated meta-granodiorite with aligned brownish altered amphibole. |
880 |
Granito delle Alpi, from the Alps |
Fine to medium-grained meta-diorite with megacrysts of plagioclase, some containing very small dark inclusions; with pervasive iron oxide staining. |
879 |
Granito delle Alpi, from the Alps |
Coarsely foliated diorite gneiss. |
878 |
'Granito delle Alpi', from the Alps |
Sandstone with abundant green siliceous clasts and with a calcareous cement. |
877 |
Granito delle Alpi, from the Alps |
Diorite. Grey, medium-grained with sparse white feldspar megacrysts up to 20mm in groundmass of white feldspar, partially altered dark green amphibole. |
876 |
probably granito nero, from between Aswan and Shellal District, Nile Valley, Egypt |
Amphibole-rich granodiorite-tonalite with megacrysts of plagioclase, and accessory titanite. There is some alignment of megacrysts giving faint foliation. |
875 |
Granito delle Alpi, from the Alps; or perhaps breccia d'Armenia, from the historical region of Armenia |
Coarse hornblende quartz monzonite with pale green-stained (chloritic?) plagioclase and accessory apatite. Specimen shows faint foliation. |
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. |
873 |
Granito di Genova, from Genoa, Liguria, Italy |
Coarse-grained metagabbro, with serpentinised pyroxene crystals. |
872 |
Granito di Corsica, from Corsica, France |
Strongly foliated meta-gabbro, brown areas are filler/polishing compound. |
871 |
Granito delle Alpi, from the Alps |
Diorite. Individual and clustered crystals of green pyroxene and scattered black hornblende crystals in a white predominantly plagioclase groundmass. Dark blebs are entirely pyroxene. |
870 |
Sandstone, from the Alps |
A quartz sandstone with abundant mafic mineral grains, scattered large forams and other shell fragments, and some calcareous grains/cement. |
869 |
Corsican granite, granito di Corsica, from Corsica, France |
Monzonite. Anhedral pink potash feldspar, greenish altered plagioclase and interstitial green amphibole. |
868 |
Granito delle Alpi, from the Alps |
Medium-grained meta-basite with plagioclase megacrysts. Irregular thin veins are coloured light brown by wax filler. |
867 |
Granito delle Alpi, from the Alps |
Foliated coarse meta-basite. |
866 |
Granito dell'Elba, from the island of Elba, Livorno, Tuscany, Italy |
Hornblende granodiorite with occasional plagioclase-rich clusters. |
865 |
Granito dell'Elba, from the island of Elba, Livorno, Tuscany, Italy |
Biotite-rich migmatitic granitoid gneiss. Pink potash feldspar is concentrated in leucosomes, quartz and plagioclase in biotite-rich palaeosomes. |
864 |
Corsican granite, granito di Corsica, from Corsica, France |
Rather fine-grained granitic gneiss with slightly discordant coarse-granitoid veins (perhaps migmatite leucosomes) . It is variably reddened and cut by late fractures near which feldspars have been altered to white spots. Veins near corner of specimen are leek green. |
863 |
'Granito di Perosa', from Perosa Argentina, Chisone valley, Turin, Piedmont, Italy |
Arkosic grit formed by weathering of quartz and feldspar-rich igneous or metamorphic rocks. Brownish red, well bedded; with scattered larger clasts of carbonate rock. |
862 |
Granito delle Alpi, from the Alps |
Quartzite. Pale grey, equigranular. Minor feldspar interstitial haematitic staining. |
861 |
Beola di Milano, from Milan, Lombardy, Italy |
Mica schist. |
860 |
Granito delle Alpi, from the Alps |
Coarse, cataclastic granite with recrystallised quartz and rare altered mica showing kink bands. |
859 |
Granito di Cumiana, from Cumiana, Turin, Piedmont, Italy |
Probably a mylonitised granite. The brown iron-staining is less evident on reverse of specimen. |
858 |
Corsican granite, granito di Corsica, from Corsica, France |
Pale grey quartz porphyry. White phenocrysts of feldspar with brownish alteration, glassy quartz and dark green uralitised amphibole in very fine-grained grey groundmass. Phenocrysts tend to form clusters. |
857 |
Granito di Corsica, from Corsica, France; or lapis sarcophagus, from Behram (the ancient Assos), Çanakkale Province, Turkey |
Probably a porphyritic andesite, with plagioclase feldspar and augite phenocrysts. |
856 |
Granito, probably granito di Corsica, from Corsica, France |
Coarse-grained granodiorite with megacrysts of pink potash-feldspar, rather smoky quartz, and accessory titanite. |
855 |
Granito di Corsica, from Corsica, France |
Gabbro-pyroxenite. Melanocratic. Very dark green pyroxene with minor brown amphibole and interstitial white feldspar. |
854 |
Granito dell'Elba, from the island of Elba, Livorno, Tuscany, Italy |
Megacrystic quartz porphyry. Megacrysts of white sub-euhedral feldspar with combined simple and lamellar twinning. Subhedral-rounded glassy quartz phenocrysts (and glomerocrysts) up to 10mm with pale lilac colour. Two feldspar groundmass, buff and white. Partially uralitised amphibole<5%. All set in pale greenish-grey fine-grained matrix. |
853 |
'Granito dell'Elba'; the island of Elba, Livorno, Tuscany, Italy, is not confirmed |
Dacite lava with phenocrysts of quartz, plagioclase feldspar and a pale green pyroxene. |
852 |
Granito bigio grafico, from Fontaine du Gènie, Tipaza, Algeria; or just possibly syenite della Balma, from Balma Biallese, Biella, Lombardy, Italy |
Medium to fine-grained syenite of predominantly plagioclase feldspar, beige-coloured potash feldspar, biotite, muscovite and black hornblende. |
851 |
Granito delle Alpi, from the Alps |
Hornblende granodiorite. Grey, equigranular. Faint alignment of feldspars. Uralitic alteration of amphibole. Larger plagioclases zoned outwards to untwinned feldspar. Occasional sphene visible with lens. |
850 |
Granito delle Alpi, from the Alps |
Quartz diorite. Coarse-grained, equigranular. Plagioclase, amphibole (altering to yellow micaceous mineral), minor quartz. |
849 |
Granito delle Alpi, from the Alps |
Folded gneiss with granitic veins. |
848 |
Granito Misio, from Kozak Mountains (the ancient Pergamon), Izmir,Turkey; or granito antico, from Gebel Dokhan (Mons Claudianus)-Wadi Umm Huyut area, Eastern Desert, Egypt. |
Tonalite gneiss with black hornblende. Distinct foliation evident on side of specimen. |
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. |
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. |
845 |
Granito nero, from between Aswan and Shellal District, Nile Valley, Egypt |
Biotite-bearing granodiorite with a few aligned feldspar megacrysts. |
844 |
Granito bianco e nero, from Wadi Barud, near Mons Claudianus, Eastern Desert, Egypt |
Quartz diorite with megacrysts of hornblende, white plagioclase feldspar and minor quartz. |
843 |
Granito antico, locality unknown |
Biotite tonalite, rich in biotite. Equigranular, with glassy plagioclase and subordinate alkali feldspar. Dark mica emphasises faint gneissose texture. |
842 |
Granito antico, locality unknown; possibly a variety of granito nero from between Aswan and Shellal District, Nile Valley, Egypt |
Biotite-bearing granodiorite with a band crossing the specimen of more granitic composition with pink potash feldspars. |
841 |
Granite antico, locality unknown; or more probably granito di Corsica, from Corsica, France |
Coarse-grained granite-granodiorite with large pink perthitic megacrysts of potash feldspar. It contains scattered euhedral grains of titanite. |
840 |
Granito rosso antico, sienite, from between Aswan and Shellal District, Nile Valley, Egypt |
Coarse-grained biotite granite with megacrysts of salmon K-felspar. |
839 |
Granito rosso antico, sienite, from between Aswan and Shellal District, Nile Valley, Egypt |
Coarse-grained biotite granite with megacrysts of salmon K-felspar. |
838 |
probably granito Sardo, from Capo Testa, Olbia-Tempio, Sardinia, Italy; but possibly granito rosso antico, from between Aswan and Shellal District, Nile Valley, Egypt |
A medium-grained granite with pink potash feldspar, biotite and quartz. |
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. |
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. |
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. |
834 |
perhaps africano, from Locality unknown; if africano, then from Sigacik (ancient Teos), Izmir Province, Turkey |
A metamorphosed breccia of dark dolomitic? limestone containing bioclasts such as forams, echinoderm spines and perhaps crinoid ossicles. There are also scattered pyrite crystals and some reddish intraclasts. The matrix is coarsely crystalline pink calcite. There is some chlorite development around clasts. Note the iron-stained calcite-filled fracture. |
833 |
Granito rosso antico minuto, from between Aswan and Shellal District, Nile Valley, Egypt |
A fairly fine-grained hornblende biotite granite/granodiorite hybrid. |
832 |
Granito rosso antico minuto, from between Aswan and Shellal District, Nile Valley, Egypt |
Fine-grained hornblende biotite granite. |
831 |
Granito rosso antico minuto, from between Aswan and Shellal District, Nile Valley, Egypt |
Fine-grained hornblende biotite muscovite granite. |
830 |
just possibly granito nero, from between Aswan and Shellal District, Nile Valley, Egypt |
Fine-grained hornblende biotite granodiorite; just possibly a variety of the Aswan granodiorite from the Precambrian basement rocks. |
829 |
possibly granito nero, from between Aswan and Shellal District, Nile Valley, Egypt |
Biotite granodiorite with some alteration to chlorite; possibly a variety of the Aswan granodiorite from the Precambrian basement rocks. |
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. |
827 |
Granito antico, locality unknown |
Fine-grained gabbro, rich in grains of pyrite the oxidation of which has caused some ferruginous staining. |
826 |
Granito bigio, granito bigio pediculare, from the area between Frejus and Dramont, Esterel Mountains, Var, France |
Porphyritic dacite, with phenocrysts of elingate plagioclase crystals and green and black amphibole (augite and hornblende?). |
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? |
824 |
Granito antico, locality unknown |
Medium-grained gabbro or metagabbro (lightly metamorphosed). Minor grains of pyrite. |
823 |
Granito antico, granito della Colonna, from Wadi Umm Shegilat, near Gebel Abu el-Hasan, Eastern Desert, Egypt |
Coarse pegmatitic diorite, with large black prismatic crystals of hornblende. |
822 |
Granito della Sedia di San Pietro, from Wadi Umm Wikala, near Wadi Semna, Eastern Desert. Egypt |
Gabbro or metagabbro (weakly metamorphosed) with some alteration of the green augite to brown? |
821 |
Granito della Sedia di San Pietro, from Wadi Umm Wikala, near Wadi Semna, Eastern Desert. Egypt |
Gabbro or metagabbro (weakly metamorphosed) with some alteration of the green augite to brown? |
820 |
Granito antico, locality unknown |
Banded biotite gneiss. Medium grey bands of recrystallised quartz, feldspar and dark mica and lighter coarser bands with same mineralogy. |
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. |
818 |
Granito bigio grafico, from Fontaine du Gènie, Tipaza, Algeria; or just possibly syenite della Balma, from Balma Biallese, Biella, Lombardy, Italy |
Medium to fine-grained syenite of predominantly plagioclase feldspar, beige-coloured potash feldspar, black hornblende, and biotite. |
817 |
Granito bigio, granito a morviglione, porfido bigio di Sibilio, from the area between Frejus and Dramont, Esterel Mountains, Var, France |
Porphyritic dacite, with large phenocrysts of white compositionally zoned plagioclase feldspars, and green-black zoned amphibole (altered hornblende), with a little biotite. |
816 |
Granito bigio, granito a morviglione, from the area between Frejus and Dramont, Esterel Mountains, Var, France |
Porphyritic dacite, with phenocrysts of white-pink compositionally zoned plagioclase feldspars, black hornblende, and a few scattered quartz crystals. |
815 |
Granito bigio, granito bigio pediculare, from the area between Frejus and Dramont, Esterel Mountains, Var, France |
Porphyritic dacite, with phenocrysts of euhedral and larger white compositionally zoned plagioclase feldspars, and dark green to black hornblende. |
814 |
most probably granito nero, from between Aswan and Shellal District, Nile Valley, Egypt |
Biotite granodiorite; probably a variety of the Aswan granodiorite from the Precambrian basement rocks. |
813 |
Granito della Colonna, from Wadi Umm Shegilat, near Gebel Abu el-Hasan, Eastern Desert, Egypt |
Coarse pegmatitic diorite, with large black prismatic crystals of hornblende. |
812 |
Porfido delle Alpi, from the Alps; or perhaps from the island of Elba, Livorno, Tuscany, Italy |
A microgabbro with a gabbro pegmatite containing large phenocrysts of white plagioclase feldspar. Altered, the pyroxene crystals are probably 'uralitised' to amphibole. |
811 |
Porfido delle Alpi, from the Alps |
Porphyry with large phenocrysts of white plagioclase feldspar. |
810 |
Porfido di Cecina, from Cecina, Livorno, Tuscany, Italy |
Porphyritic andesite. Subhedral phenocrysts up to 20mm of zoned plagioclase in dark grey groundmass of plagioclase, pyroxene and ?amphibole. Minor micaceous veining. |
809 |
Porfido serpentino nero, from Wadi Umm Towat, near Gebel Dokhan, Eastern Desert, Egypt |
Trachyandesite porphyry with white phenocrysts of plagioclase feldspar. |
808 |
Imperial porphyry, porfido nero, from Gebel Dokhan, Eastern Desert, Egypt |
Andesite-dacite porphyry of white rectangular plagioclase phenocrysts in a dark grey groundmass. |
807 |
'Porfido serpentino antico', locality unknown |
Grey porphyry, perhaps a porphyritic diorite or granodiorite with phenocrysts of white plagioclase. |
806 |
Porfido serpentino antico, porfido verde agatata, from Krokees (Levetsova), Laconia, Peloponnese, Greece |
Porphyritic andesite of Permian to Carboniferous age, weakly metamorphosed and coloured green by epidote and other iron silicates. The phenocrysts are plagioclase feldspar, and vesicles are filled with cryptocrystalline quartz (chalcedony). |
805 |
Porfido serpentino antico, porfido Vitelli, from Krokees (Levetsova), Laconia, Peloponnese, Greece |
Porphyritic andesite of Permian to Carboniferous age, weakly metamorphosed and coloured green by epidote and other iron silicates. The phenocrysts are plagioclase feldspar. |
804 |
Porfido serpentino antico, from Krokees (Levetsova), Laconia, Peloponnese, Greece |
Porphyritic andesite of Permian to Carboniferous age, weakly metamorphosed and coloured green by epidote and other iron silicates. The phenocrysts are plagioclase feldspar. |
803 |
Porfido serpentino antico, from Krokees (Levetsova), Laconia, Peloponnese, Greece |
Porphyritic andesite of Permian to Carboniferous age, weakly metamorphosed and coloured green by epidote and other iron silicates. The phenocrysts are plagioclase feldspar. |
802 |
Porfido serpentino antico, porfido verde risato, from Krokees (Levetsova), Laconia, Peloponnese, Greece |
Porphyritic andesite of Permian to Carboniferous age, weakly metamorphosed and coloured green by epidote and other iron silicates. It has small phenocrysts of plagioclase feldspar. |
801 |
Porfido serpentino antico, from Krokees (Levetsova), Laconia, Peloponnese, Greece |
Porphyritic andesite of Permian to Carboniferous age, weakly metamorphosed and coloured green by epidote and other iron silicates. The phenocrysts are plagioclase feldspar. |