GRD022AS0
RAMA7-Dr17-3
Amphibolite
Mesozoic › Jurassic › Late Jurassic
145.5
-
161.0
1
Ritter 154 › Cabinet 37 › Drawer B
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Large black crystalline (~8 cm) sample. Largest crystals are amphibole, interstital white crystals. Billet pieces. Original label: 23 November, 1980.
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RAMA 7 Dredge 17
Pacific Ocean
Mariana Trench. Original: 11 24.8N, 142 09.41E to 11 25.1N, 142 09.3E. Depth: -9050 to -8730.
Latitude: 11.4133°
Longitude: 142.1566°
-8890.0 m a.s.l.
N/A
Large amphibole with interstitial feldspar and opaque oxides
5.0
plane
Large amphibole with interstitial feldspar and opaque oxides
5.0
crossed
-
scan
crossed
GRD022AT0: 60% green and brown hornblende (some chlorite?), 30% feldspar, 10% opaque oxides; thin section becomes more hornblende-rich up section (C. Eichler)
N/A
N/A