Table
T10. Minerals identified by X-ray diffraction analysis, Hole 1188B.
193-1188B-
1Z-1,
0-15
1
Completely
altered, bleached, locally sparsely vesicular volcanic rock
Cristobalite
(plagioclase, anhydrite, pyrite, illite, chlorite)
1Z-1,
16-31
1
Completely
altered, bleached, locally sparsely vesicular volcanic rock
Cristobalite
(pyrite, illite, quartz, anhydrite)
Note: XRD = X-ray diffraction. * = the terms major and minor are applied to XRD analyses as explained in "Hydrothermal Alteration" in the "Explanatory Notes" chapter and do not imply quantitative abundances.S