GRD022ZS0
RAMA7-Dr19-1
Basalt
Mesozoic › Jurassic › Late Jurassic
145.5
-
161.0
1
Ritter 154 › Cabinet 37 › Drawer C
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Small (~7x3x3 cm) dark sample with feldspar laths and glomerocrysts, some small blebs of Fe-staining. Calcium carbonate and Fe-Mn crust on sample. Billet. Original label: 25 November, 1980.
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RAMA 7 Dredge 19
Pacific Ocean
Mariana Trench. Original: 11 48.3N, 142 11.9E to 11 49.0N, 142 11.3E. Depth: -4440 to -4200.
Latitude: 11.805°
Longitude: 142.19833°
-4320.0 m a.s.l.
N/A
Large resorbed plagioclase with rim overgrowths and small plagioclase-clinopyroxene glomerocryst
2.5
plane
Large resorbed plagioclase with rim overgrowths and small plagioclase-clinopyroxene glomerocryst
2.5
crossed
-
scan
crossed
GRD022ZT0: Most of the large, euhedral plagioclase have resorbed cores and solid rim overgrowths, similarly most of the pyroxenes have resorbed cores with solid overgrowths; both the plagioclase and pyroxenes are present as individual crystals or glomerocrysts; the matrix is composed of very fine-grained feldspars in green and brown groundmass (C. Eichler)
N/A
N/A