Table 3.

Table 3. Abbreviations used in the alteration and vein logs for Holes 917A and 918D.

Colors			Minerals			Mineral Proportions
B	Brown		Am Si	Amorphous silica		tr	Trace (<1%)
Bl	Blue		C	Clay (Mg-saponite)		X + Y	~50:50 X:Y
Bk	Black		CO₃	Calcium carbonate		X > Y	70:30 X:Y
G	Gray		Cu	Native copper		X >> Y	90:10 X:Y
Gn	Green		Cp	Chalcopyrite		X>>>Y	99:1 X:Y

P	Pink		FeOx	Iron-oxyhydroxides		Other
Pr	Purple		Ol	Olivine		ox	Oxidized
R	Red		Pl	Plagioclase		P.	Piece(s)
W	White		Py	Pyrite		V	Vertical
G-Gn	Gray-green		SO₄	Gypsum		R	Rubble
lt	Light		Z, Zeol	Zeolite		Blank	Same as above
dk	Dark					->	Altered to

Note: Other minerals and colors are written out in full.