GRD024NS0
RAMA7-Dr22-10B
Schistose
Mesozoic › Jurassic › Late Jurassic
145.5
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161.0
1
Ritter 154 › Cabinet 37 › Drawer D
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Two cut slabs measuring ~6x6x1 cm each. Composed of soft black-blue lenses in medium-grained light (micaceous?) matrix. 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
GRD024NT0: Thin section is carbon-coated. Black-blue lenses are composed of: feldspar (some simple twinning, although crystals appear to be strained. Green alteration along edges of the lense. Lighter matrix is composed of: tourmaline (?) (birefringent, high relief, and pleochroic: pink to light blue) and occasional opaques. (C. Eichler)
N/A
N/A