World Data Service for Geophysics

Index to Marine and Lacustrine Geological Samples (IMLGS)
an international partnership


Repository: SOEST [Contact the Curator]
Ship: Melville
Cruise: BMRG06MV
Sample: BMRG06MV STA59 RD63
Device: dredge, rock
Latitude: -38.199
Longitude: 78.36717
Water Depth(m): 1900 to 1775
Date: 19960325
PI: Kevin Johnson
Storage: room temperature, dry
Province: rise or ridge, aseismic ocean

Southeast Indian Ridge; Sampling locale: hummocky relief in central part of ridge axis.
1 :   
Weathering/Metamorphism: weathering - fresh
Comments: Sample Type: Pillow basalt_Aphyric basalt. Mineralogy: . Weathering: Fresh. Glass condition: >50% fresh glass. 3 buckets. Probe glass taken. Subsampled by DG. Remaining glass to KJ. Two bags of unnumbered type 1 pieces also included in buckets.Pillow fragments and tubes with aphyric glassy rinds up to ~0.5 cm thick having Fe/Mn oxide coating. Interiors are grey with orange staining. Rare microphenocrysts of plagioclase and olivine present in the glass. Type 1 (only type) from this dredge.