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Table T5. XRD data from veins, Hole U1309D, Expedition 305.

Core, section,
interval (cm)		 Hand sample description/
scientist comments		 Mineral phases Possible trace
Main Minor
305-U1309D-
80R-1, 53–54 Soft, white vein Chlorite, serpentine, clay    
80R-1, 89–90 Talc-carbonate Chlorite, serpentine, clay    
80R-2, 6–7 Soft, white vein Calcite Amphibole  
80R-2, 50–51 Soft, white vein Calcite, clay    
80R-2, 122–123 Vein Chlorite, amphibole    
81R-1, 43–44 Talc-carbonate vein Calcite, clay    
84R-1, 63–64 Vein Quartz, calcite   Pyrite?, albite
84R-2, 16–18 Vein Albite, tremolite   Augite
86R-1, 52–53 Vein Albite, tremolite Clinopyroxene Pyrite?, ilmenite?
86R-2, 33–35 Vein Albite, tremolite    
86R-3, 46–47 Vein Plagioclase, clinopyroxene Tremolite  
88R-5, 5–6 Messy talc vein Chlorite, amphibole, talc, clay    
89R-1, 57–58 Messy talc vein Calcite, amphibole, chlorite, clay   Talc
89R-2, 59–60 Sulfide-chlorite vein Amphibole, augite Plagioclase, clay  
90R-2, 55–56 Altered clinopyroxene Amphibole, clinopyroxene, chlorite Talc  
90R-4, 31–32 Calcite vein Calcite   Clay
91R-1, 121–122 Albitized zone Albite Amphibole, chlorite  
93R-2, 72–73 Messy talc vein Calcite, chlorite Talc, amphibole Albite, clay
93R-2, 123–124 Slip-fiber vein Calcite, chlorite, amphibole    
94R-1, 52–53   Chlorite, amphibole, albite    
95R-1, 119–120 Slip-fiber Tremolite, clay    
96R-1, 52–53 Magmatic vein Tremolite, plagioclase (albite?)    
96R-1, 119–120 Slip-fiber Tremolite, clay    
97R-1, 38–39 White vein Quartz, calcite Tremolite, chlorite  
100R-5, 37–38   Calcite, chlorite Serpentine  
103R-2, 68–69 Talc vein Chlorite, tremolite, clinopyroxene   Pyrite?
104R-2, 145–146 Talc Bad pattern    
107R-2, 96–97 Magmatic vein Albite Chlorite  
109R-4, 6–7 Talc vein Calcite, clay    
110R-3, 80–82 Slip-fiber vein Calcite   Serpentine
111R-1, 90–92 Talc alteration zone Talc, clay    
111R-2, 96–97 Vein in talc alteration zone Chlorite, amphibole    
116R-1, 26–28 Altered leucogabbro Plagioclase, amphibole, chlorite, clinopyroxene    
116R-4, 41–43 Slip-fiber vein Tremolite, calcite Chlorite  
117R-4, 24–28 ICP-AES? Plagioclase, clinopyroxene Amphibole, chlorite  
117R-4, 79–81 Slip fiber vein Chlorite, tremolite, clay Talc  
118R-3, 39–40 Slip fiber Chlorite, tremolite, clay    
119R-1, 66–67 Dark green vein Amphibole, plagioclase, clinopyroxene, clay    
119R-2, 40–41 Dark green vein Amphibole, clay    
120R-2, 103–104 Carbonate-sulfide vein Calcite, quartz, clay Pyrite  
120R-3, 36–37   Calcite, quartz, pyrite   Plagioclase
124R-1, 83–84 Dark green vein Chlorite, tremolite, clay Calcite, plagioclase, clinopyroxene  
125R-1, 105–106 Dark green vein Chlorite, amphibole, plagioclase, calcite, clinopyroxene, clay    
125R-3, 124–125 Calcite-chlorite vein Calcite, quartz, pyrite, albite, clay    
130R-1, 125–126 Altered rock Tremolite, plagioclase, clinopyroxene, clay    
130R-3, 40–41   Calcite Chlorite  
134R-2, 122–123 Messy talc vein with calcite Calcite Talc, chlorite, pyrite  
136R-1, 73–74 Slip fiber Calcite, talc, chlorite    
136R-2, 26–27 Quartz? Serpentine    
139R-1, 113–116 Sulfide vein Calcite, chlorite, pyrite Amphibole, plagioclase  
139R-2, 125–127 Soft talc vein Calcite, chlorite    
140R-2, 5–7 Altered magmatic dike in talc zone Plagioclase, chlorite, amphibole, talc    
140R-2, 55–56 Altered diabase Amphibole, cummingtonite Chlorite Illite
140R-2, 89–90 Frankenstein vein Calcite   Clay
140R-3, 10–12 Soft talc vein Bad pattern    
140R-4, 78–80 Soft talc vein Serpentine, calcite, clay    
140R-4, 115–116 Altered igneous rock Chlorite, amphibole Plagioclase, clinopyroxene  
141R-2, 80–81 Metaigneous? Clinopyroxene, amphibole, plagioclase    
145R-2, 110–111 Green vein Tremolite   Clay
147R-1, 124–125 Green calcite vein Calcite, amphibole    
149R-2 Funny green slip-fiber vein Talc, tremolite, chlorite Clay  
151R-1, 32–34 White, fibrous Amphibole, chlorite, calcite, talc    
150R-3, 22–25 Big fluffy white vein Anhydrite Calcite  
157R-1, 112–114 Whitish vein Amphibole   Clinopyroxene
164R-2, 16–17 Soapy vein with calcite Serpentine, clay    
165R-2, 143–145 Talc-carbonate Analcime, thomsonite/natrolite Clay  
165R-3, 8–9 Soapy vein with calcite Analcime, serpentine Clinopyroxene  
168R-1, 59–60 Slip-fiber? Albite, clay Talc, amphibole  
171R-2, 94–95 Gouge with tremolite Amphibole, clay Plagioclase, clinopyroxene  
174R-2, 70–72 Waxy, dark green Amphibole, talc, clay Clinopyroxene, orthopyroxene, plagioclase  
177R-3, 46–48 Talc vein Thomsonite, analcime, chrysotile Plagioclase, clinopyroxene  
178R-1, 95–97 Zeolite Plagioclase, amphibole, clinopyroxene   Natrolite
179R-4, 130–133 Chlorite? Amphibole, plagioclase, clinopyroxene    
184R-1, 68–70 Slip fiber Tremolite    
185R-1, 135–137 Greenish, earthy (gouge?) Amphibole, clay, plagioclase, clinopyroxene    
186R-3, 61–64 White vein Calcite, chlorite, amphibole, albite    
192R-1, 9–10 Talcose vein Clay, chlorite, natrolite, analcime Plagioclase, clinopyroxene  
202R-2, 12–13 Talc?-calcite vein Clay, calcite, Albite, thomsonite  
204R-3, 92–93 Talc? vein Clay, talc, calcite, chlorite, amphibole, quartz Plagioclase, clinopyroxene  
205R-4, 95–100 ICP-AES? Amphibole Plagioclase, clinopyroxene  
207R-5, 24–27 Talc vein Clay, serpentine, clinopyroxene   Talc
207R-6, 11–14 Talc, very dark Clay, serpentine, magnetite    
208R-2, 17–23 Talc, white stuff Clay, thomsonite, analcime    
209R-1, 24–28 Strange calcite Prehnite    
209R-2, 132–135 Talc-carbonate Clay, serpentine, amphibole Plagioclase, clinopyroxene  
213R-4, 42–47 Talc-carbonate Clay, thomsonite, prehnite Plagioclase, clinopyroxene, talc  
216R-2, 47–51 Talc-carbonate Clay, thomsonite, prehnite Plagioclase, clinopyroxene, ilmenite  
226R-1, 29–30 Zeolite Clay, thomsonite, prehnite, talc    
226R-2, 38–39 Talc-carbonate Clay, thomsonite Plagioclase, clinopyroxene  
228R-1, 113–114 Pale green talc vein Clay, calcite, serpentine    
228R-4, 51–51 Green talc vein Clay, calcite Clinopyroxene  
229R-1, 82–83 Talc-carbonate Calcite, prehnite, chlorite   Zeolite, clay
229R-2, 62–63 Talc-carbonate Calcite, clay    
230R-3, 86–87 Carbonate-zeolite Clay, calcite, thomsonite    
231R-2, 55–56 Epidote-bearing Chlorite, calcite, analcime, epidote   Clay, thomsonite
234R-2, 3–8 Tremolite near rodingite Tremolite, calcite    
240R-1, 51–54 Soft vein Clay, thomsonite, serpentine Prehnite Gibbsite
240R-1, 100–101 Soft green gel, heated to 200°C Saponite Calcite  
261R-2, 67–70 Green, slip-fiber vein Tremolite, thomsonite, chlorite   Hydrogarnet
276R-2, 45–50 Calcite vein Calcite, clay    
285R-1, 60–62 Soft, dark green vein Chlorite, thomsonite, clay    
286R-1 Soft, dark green vein Clay, chlorite    
289R-1, 73–76 Green vein Actinolite, serpentine, thomsonite, prehnite, clay Clinopyroxene  
290R-3, 52–55 Light green vein Serpentine, albite, actinolite, thomsonite Clay, clinopyroxene  
291R-2, 103–105 Soft, light green vein Clay?   Weak pattern
291R-3, 100–102 Green and white vein Thomsonite, saponite    
293R-1, 44–47 Green and white vein Kutnahorite, clay    
293R-1, 79–81 Dark green vein Chlorite, analcime, thomsonite, amphibole, prehnite Clinopyroxene  

Note: ICP-AES = inductively coupled plasma–atomic emission spectroscopy.

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