Search Results

Sample Type is Igneous › Volcanic › Mafic Extrusive

311 records | Download
IGSN Sample Type Notes Location Number Thin Sections Storage Location
GRD0234S0 Basalt Medium-sized (~7x8x3 cm) cut sample. Light brown interior with clear feldspar laths, wispy bands, and elongate vugs (look like burrows). Fe-stained and patchy Fe-Mn crust on sample. Billet. Original label: 25 November, 1980. Pacific Ocean 1 Ritter 154, 37 C
GRD0235S0 Basalt Small (~4x3x2 cm) uncut sample. Small chip in the corner reveals a brown interior and an olivine crystal. Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 0 Ritter 154, 37 C
GRD0236S0 Basalt Small (~4x3x2 cm) uncut sample. Small chip reveals a black interior containing clear feldspar laths and a light green (olivine?) crystal. Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 0 Ritter 154, 37 C
GRD0237S0 Basalt Small (~4x3x1 cm) uncut sample. Small chip reveals a brown interior containing a few clear feldspar laths. Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 0 Ritter 154, 37 C
GRD0238S0 Basalt Small (~4x3x1 cm) uncut sample. Small chip reveals a black interior containing a few clear feldspar laths. Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 0 Ritter 154, 37 C
GRD0239S0 Basalt Small (~2x3x3 cm) cut sample with brown interior containing a few clear feldspar laths and glomerocrysts. Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 1 Ritter 154, 37 C
GRD023AS0 Basalt Small (~4x4x2 cm) uncut sample. Small chip reveals a grey interior containing small clear feldspar laths. Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 0 Ritter 154, 37 C
GRD023BS0 Basalt Small (~2x1x5 cm) uncut sample. Small chip reveals a grey interior containing small clear feldspar laths. Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 0 Ritter 154, 37 C
GRD023CS0 Basalt Large (~7x4x4 cm) cut sample. Green-grey interior contains abundant small clear feldspar laths and glomerocrysts. Fe-Mn crust on sample. Billet pieces. Original label: 25 November, 1980. Pacific Ocean 1 Ritter 154, 37 C
GRD023DS0 Basalt Sample missing. Thin section only. Original label: 25 November, 1980. Pacific Ocean 1 Ritter 154, 37 C
GRD023ES0 Basalt Two thinly cut slabs (~6x3x0.5 cm and ~5x3x2 cm). Grey-green rock containing small clear feldspar laths and glomerocrysts, occasional amphibole? Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 1 Ritter 154, 37 C
GRD023FS0 Basalt Small (~4x4x3 cm) cut grey-green rock containing small clear/white feldspar laths and glomerocrysts. Fe-Mn crust on sample. Original label: 25 November, 1980. Pacific Ocean 1 Ritter 154, 37 C
GRD0257S0 Basalt Dark green porphyritic basalt with abundant circular vesicles, some vesicles are filled-in with quartz or Fe-oxide minerals: Three large (~8x5x6 cm) samples. Dendritic oxide crystal growth on the exterior of one sample. Billet pieces. Original label: 21 September, 1975. Pacific Ocean 3 Ritter 154, 37 E
GRD0259S0 Basalt Two small (~4x3x2 cm) cut dark green coarse-grained samples. Large purple feldspar and small white veins in hand sample. Two other small (~5x3x4 cm on cut face) samples with green feldspar crystals in fine-grained blue matrix. Billet and billet pieces. Original label: 21 September, 1975. Pacific Ocean 3 Ritter 154, 37 E
GRD026AS0 Basalt Two pieces: one uncut measuring ~5x4.5x1 cm and one cut measuring 3.5x3.5x2 cm on cut face. Interior is dark grey with small green crystals. Billet. Billet pieces. Original label: 21 September, 1975. Pacific Ocean 1 Ritter 154, 37 F
GRD026US0 Basalt Cut sample (~5x6x3 cm on cut face), grey vesicular basalt, largest vesicle has 6 small puffs of crystals in it. Patchy sedimentary/sandstone rind billet pieces. Pacific Ocean 1 Ritter 154, 37 F
GRD026VS0 Basalt Cut sample (~5x7x4 cm on cut face), rounded cobble with yellow rind. The interior is grey basalt, small black, green, and white crystals are visible. Billet pieces. Pacific Ocean 1 Ritter 154, 37 F
GRD026WS0 Basalt Four small (~4.5x4.5x2 cm) uncut samples with yellow interiors with some green staining/mineralization. Patchy Fe-Mn crust. Pacific Ocean 0 Ritter 154, 37 F
GRD027NS0 Basalt Three small cut samples in a plastic bag. White blebs in a dark green, fine-grained matrix. Some thin veins/fractures. Pacific Ocean 0 Ritter 154, 37 G
GRD0289S0 Ankaramite One large (~9x5.5x3.5 cm) and one small (~2x3.5x2 cm) sample. Fibrous brown-green crystals and white blebs in fine-grained black groundmass. Pacific Ocean 0 Ritter 154, 37 H
GRD028ES0 Basalt Two very large (~15x7x5 cm and ~22x7x7 cm) and three large (~8x8x3 cm) of basalt with large vesicles (~1 cm in diameter). Some clear/white crystal growth in vesicles of largest sample. Smallest sample is cut. Billet and billet pieces. Original label: 1 August, 1968, Baie du Cap volcanics. Mauritius 2 Ritter 154, 34 A
GRD028RS0 Basalt Dark, fine-grained porphyritic basalt. Occasional euhedral to subhedral feldspar crystals. Fe-Mn crust on sample. Billet. Original label: 14 August, 1968. Indian Ocean 1 Ritter 154, 34 A
GRD028SS0 Basalt Dark, fine-grained sparsely porphyritic basalt with occasional very small euhedral to subhedral crystals. Fe-Mn crust on sample. Billet. Original label: 14 August, 1968. Indian Ocean 1 Ritter 154, 34 A
GRD028TS0 Basalt Dark, fine-grained basalt. Fe-Mn crust on sample. Billet. Original label: 14 August, 1968. Indian Ocean 2 Ritter 154, 34 A
GRD028US0 Basalt Dark, fine-grained basalt with occasional euhedral to subhedral crystals. Fe-Mn crust on sample. Billet. Original label: 14 August, 1968. Indian Ocean 1 Ritter 154, 34 A
GRD028XS0 Basalt Large (~10x9x11 cm) sample; Dark, fine-grained porphyritic basalt; occasional euhedral to subhedral feldspar crystals and subhedral olivine crystals; Sample has had cores drilled in three places. Indian Ocean 0 Ritter 154, 34 B
GRD029AS0 Basalt Two very large cut samples (~21x11x7 cm and ~11x8x5 cm) with two smaller pieces. Black, porphyritic basalt with a glassy surface. White feldspar and green olivine crystals visible. Fe-stained bottom. Original label: 21 August, 1968. Basalt. SiO2 ~51.0, TiO2 ~1.10, Na2O ~2.76, K2O ~0.18, P2O5 ~0.10. Indian Ocean 2 Ritter 154, 34 B
GRD029DS0 Basalt Small cut sample of vesicular porphyritic basalt; feldspar and pyroxene crystals are visible in the sample. White rind on sample. Billet and billet pieces. Original label: 21 August, 1968. Indian Ocean 1 Ritter 154, 34 B
GRD029ES0 Basalt Small (~7.5x8x6 cm from the cut face) sample of vesicular porphyritic basalt; feldspar crystals are visible in the sample. Glassy top with white rind. Billet piece. Original label: 21 August, 1968. Indian Ocean 1 Ritter 154, 34 B
GRD029FS0 Basalt Large (~14x8x8 cm from the cut face) sample of vesicular porphyritic basalt; feldspar and olivine crystals are visible in the sample. Small glassy top. Billet and billet pieces. Thin section missing. Original label: 21 August, 1968. Indian Ocean 0 Ritter 154, 34 B