GRD025JS0
ERDC-24D-8-1
Conglomerate
Unknown
None
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1
Ritter 154 › Cabinet 37 › Drawer E
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Multiple pieces, the largest measures ~9x5.5x6 cm on cut face. High specific gravity. Large (~3 cm) fine-grained purple clasts with green rinds in fine-grained green matrix. Purple clasts contain what appears to be thin bivalve shell fragments. Occasional calcite-filled vugs. A smaller (~5x2x1 cm) uncut subrounded brown sample containing white specks/crystals (quartz?). Billet and billet pieces. Original label: 21 September, 1975.
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ERDC Dredge 24
Pacific Ocean
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N/A
Contact between the clast (yellow-brown) and the matrix (white-brown)
2.5
plane
Contact between the clast (yellow-brown) and the matrix (white-brown)
2.5
crossed
Clast: white crystals in opaque matrix
2.5
plane
Clast: white crystals in opaque matrix
2.5
crossed
Matrix: Fe-oxides and small, euhedral crystals
2.5
plane
Matrix: Fe-oxides and small, euhedral crystals
2.5
crossed
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scan
crossed
GRD025JT0: The large clast is surrounded by a green rind, Fe-rich, and mostly composed of opaque with occasional euhedral clear crystals (first order greys, serpentine?). Fe-cemented silicate crystals?; The matrix is composed of Fe-oxides and small, euhedral crystals (similar to clast) also Fe-cemented silicate crystals?. There are patches of serpentine in the matrix. (C. Eichler)
N/A
N/A