GRD026CS0
ERDC-28D-3
Fe and Mn Formation
Unknown
None
-
2
Ritter 154 › Cabinet 37 › Drawer F
fine-grained
Cut sample. ~5x4x7 cm. Purple, fine-grained sample with Fe-stained veins and thick (~3 mm) Fe-Mn crust. High specific gravity. Billet. Billet pieces. Original label: 21 September, 1975.
-
ERDC Dredge 28
Pacific Ocean
-
N/A
Slide 1: Matrix: very small feldspar (?) laths, pyroxene and opaque oxides.
10.0
plane
Slide 1: Matrix: very small feldspar (?) laths, pyroxene and opaque oxides.
10.0
crossed
Slide 1: Fe-oxide vein
2.5
plane
Slide 1: Fe-vein
2.5
crossed
Slide 1
scan
crossed
Radiolarians or silicic spheres in Fe-oxide-rich matrix
10.0
plane
Radiolarians or silicic spheres in Fe-oxide-rich matrix
10.0
crossed
Slide 2; Set B
scan
crossed
GRD026CT0: Slide 1: Rock composed of microphenocrysts of abundant opaques, acicular feldspar and pyroxene (altered?); Large, cross-cutting vein of opaque (Fe?) minerals with Fe-stained halo (C. Eichler)
GRD026CT1: Slide 2, Set B: Corner broken off. Radiolarians or silicic spheres in Fe-oxide-rich matrix (C. Eichler)
N/A
N/A