GRD0246S0
RAMA7-Dr22-3(3)
Gabbro
Unknown
None
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1
Ritter 154 › Cabinet 37 › Drawer D
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Two small cut samples measuring ~5x4x5 and ~4x4.5x2.5 cm from the cut faces. Dark green crystalline interior. Fe-Mn crust on sample. 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
Plagioclase and (altered?) augite with thin pigeonite exsolution lamellae
2.5
plane
Plagioclase and (altered?) augite with thin pigeonite exsolution lamellae
2.5
crossed
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scan
crossed
GRD0246T0: Altered? 50% plagioclase (polysynthetic twinning), 50% augite with thin pigeonite exsolution lamellae; medium-grained (C. Eichler)
N/A
N/A