GRD025OS0
ERDC-27D-3
Diorite
Unknown
None
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2
Ritter 154 › Cabinet 37 › Drawer E
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Two cut pieces measuring ~9x5x5 cm and ~7x5x6 cm on the cut face. Black crystalline interior with patchy Fe-Mn crust on top and fine-grained tan rind on bottom. Occasional large olive-green feldspar are visible on bottom of sample. Billet and billet pieces.
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ERDC Dredge 27
Pacific Ocean
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N/A
Slide 1: Large plagioclase and pyroxene
2.5
plane
Slide 1: Large plagioclase and orthopyroxene
2.5
crossed
Slide 1
scan
crossed
Slide 2 Scrap
scan
crossed
GRD025OT0: Slide 1: Very large plagioclase (polysynthetic twinning) with interstitial anhedral orthopyroxene and clinopyroxene with exsolution lamellae; occasional plagioclase inclusions in the pyroxene; very nice, fresh thin section (C. Eichler)
GRD025OT1: Slide 2 (scrap): Upper right corner is polished thin; Very large plagioclase (polysynthetic twinning) with interstitial anhedral orthopyroxene and clinopyroxene with exsolution lamellae; occasional plagioclase inclusions in the pyroxene (C. Eichler)
N/A
N/A