GRD029IS0
CIRCE 94-2
Basalt
Cenozoic › Paleogene › Paleocene › Early Paleocene
61.7
-
65.5
1
Ritter 154 › Cabinet 34 › Drawer B
Porphyritic
Large (~5.5x6x4 cm from the cut face) sample of vesicular basalt. Vesicles are small. Fe-Mn crust on the sample. Billet. Billet pieces.
-
CIRCE
Indian Ocean
Original: 15 33.5, 66 44.0 E. Depth: -2955 to -2815.
Latitude: 15.558333°
Longitude: 66.733333°
-2885.0 m a.s.l.
N/A
Heavily resorbed pyroxene and plagioclase in brown groundmass
5.0
plane
Heavily resorbed pyroxene and plagioclase in brown groundmass
5.0
crossed
-
scan
crossed
GRD029IT0: Most of the crystals are resorbed. Few large phenocrysts of plagioclase (simple twinning), pyroxene (orthopyroxene is more abundant than clinopyroxene, almost all crystals are resorbed), and a few small euhedral olivine crystals. Brown groundmass. Few to no glomerocrysts. One very large plagioclase has a rim overgrowth. (C. Eichler)
N/A
Fisher_GSABulletin_1971
Fisher, R.L., Sclater, J.G., McKenzie, D.P., 1971, Evolution of the Central Indian Ridge, Western Indian Ocean: Geological Society of America Bulletin, v. 82, no. 3, p. 553-562.