GRD024ES0
RAMA7-Dr22-7
Diorite
Mesozoic › Jurassic › Late Jurassic
145.5
-
161.0
1
Ritter 154 › Cabinet 37 › Drawer D
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One large cut sample (measuring ~6x5x10 cm from the cut face) with three small samples ~5 cm in diameter. Grey crystalline interior. White rind with Fe-Mn patches. Billet pieces. Original label: 28 November, 1980.
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RAMA 7 Dredge 22
Pacific Ocean
Mariana Trench. Original: 11 29.7N, 142 11.6E to 11 30.1N, 142 11.2E. Depth: -7800 to -7680.
Latitude: 11.495°
Longitude: 142.193333°
-7740.0 m a.s.l.
N/A
Orthopyroxene with amphibole exsolution lamellae (pink) and heavily altered amphibole (?) surrounded by feldspar
2.5
plane
Orthopyroxene with amphibole exsolution lamellae (pink and orange) and heavily altered amphibole (?) surrounded by feldspar
2.5
crossed
-
scan
crossed
GRD024ET0: Thin section is carbon-coated; Amphibole exsolution lamellae in orthopyroxene and clinopyroxene (30%); Feldspar, fractured and slightly altered (60%); altered fibrous mineral (heavily altered amphibole?) (10%); trace amounts of opaques (C. Eichler)
N/A
N/A