GRD01ZIS0
RAMA7-Dr9-5
Andesite
Mesozoic › Cretaceous › Late Cretaceous
65.5
-
99.6
1
Ritter 154 › Cabinet 37 › Drawer A
-
Small greenish porphyritic extrusive sample with large, dark plagioclase laths/glomerocrysts. Original label: 10 November, 1980.
-
RAMA 7 Dredge 9
Pacific Ocean
Philippine Trench. Original: 10 28.2N, 126 09.9E to 10 27.3N, 126 09.5E. Depth: -4075 to -3650.
Latitude: 10.47°
Longitude: 126.165°
-3865.0 m a.s.l.
N/A
abundant small euhedral oxides and pyroxene in a fibrous crystalline matrix
5.0
plane
abundant small euhedral oxides and pyroxene in a fibrous crystalline matrix
5.0
crossed
Large euhedral plagioclase
2.5
plane
Large euhedral plagioclase displaying polysynthetic twinning and concentric zonation
2.5
crossed
-
scan
crossed
GRD01ZIT0: Very nice large euhedral plagioclase, some plagioclase have resorbed centers with overgrowths; abundant small euhedral oxides and pyroxene in a fibrous crystalline matrix; silica veins (C. Eichler)
N/A
N/A