Table T10. X-ray diffraction (XRD) identification of alteration minerals from Hole 1141A.
 
Core, section,
piece, interval
(cm)
Description Identification
183-1141A-

14R-1, 19-20 White vesicle filling in completely altered basalt Dolomite
15R-4, 125-127 White vesicle filling in completely altered basalt Dolomite
16R-3, 48-49 Mineral in large vesicle in completely altered basalt Quartz
17R-CC, 2-3 Mineral in large vesicle in completely altered basalt Dolomite
18R-1 (Piece 15, 120-125) Green mineral in vein Calcite, albite, saponite
19R-1 (Piece 1, 1-3) Green mineral in vein Rhodocrosite(?)
19R-1 (Piece 6, 36-38) Part of colloform vesicle Rhodocrosite, calcite
20R-1 (Piece 6, 46-48) Sheared vein mineral Dolomite, siderite > calcite
20R-2 (Piece 11, 139-140) Vein mineral Dolomite, calcite
20R-2 (Piece 5, 65-67) Vesicle filling Dolomite
20R-3 (Piece 1, 1-2) Fibrous while mineral in vein Calcite >> dolomite
20R-3 (Piece 3, 15-16) Ceramic-like vesicle filling Siderite
20R-3 (Piece 3, 9-12) Altered whole rock sample Montmorillonite > saponite
22R-3, (Piece 3, 38-39) Colloform vesicle filling Quartz, siderite > calcite > dolomite