Table T3. Vein mineralogy, Hole 1268A.
Mineral in vein
Volume (cm3)
Volume by vein type (cm3)
Vein minerals in veins (%)
Vein minerals in hole (%)
Volume in vein types (%)
MSV
TPV
MTV
SPV
CLV
OTV
MSV
TPV
MTV
SPV
CLV
OTV
Talc 9,511 215 1,857 6,900 492 46
48.0 4.24 1.1 9.37 34.80 2.48 0.23
Serpentine 7,755
37 335 7,331 15 37 39.1 3.46
0.19 1.69 36.97 0.07 0.19
Sulfides 1,602 903 359 316 16 9
8.1 0.71 4.55 1.81 1.59 0.08 0.04
Iron oxides (others) 488 344 117 24 2 1
2.5 0.22 1.74 0.59 0.12 0.01 0.003
Chlorite 402
38 120 165 79
2.0 0.18
0.19 0.60 0.83 0.40
Magnetite 44

1 5 1 37 0.2 0.02

0.00 0.03 0.01 0.19
Amphibole 26

12 3 12
0.1 0.01

0.06 0.01 0.06
Volume in site by vein type (%)







8.85 0.65 1.07 3.44 3.58 0.07 0.03
Relative volume of vein types (%)








7.4 12.1 38.9 40.4 0.8 0.4
Total 19,829 1,463 2,407 7,707 8,015 163 74







Notes: MSV = massive sulfide veins; TPV = talc-pyrite veins; MTV = massive talc veins; SPV = serpentine veins; CLV = chlorite veins; OTV = other veins. Vein volumes are based on macroscopic observations of vein mineralogy and vein percentage. We computed volume percentages of veins by using the volume weighted average of macroscopic estimates on the reported length scale of observation (i.e., piece, section, etc.) using relative curated length and assuming a constant core radius throughout the hole. This table is also available in ASCII.