Table T41. Secondary minerals identified by X-ray diffraction analysis.
| Core, section, piece, interval (cm) |
Occurrence | Description | Result |
|---|---|---|---|
| 312-1256D- | |||
| 173R-1 (Piece 12, 57–59) | Vein | White transparent, elongated prisms, cleavage perpendicular to elongation | Anhydrite > quartz + chlorite-smectite |
| 174R-1 (Piece 10, 53–57) | Vein | Quartz + pyrite + laumontite vein | Quartz >> chlorite-smectite |
| 175R-1 (Piece 10, 40–42) | Vein | Tiny white radiating crystals + colorless slabs with cleavage perpendicular to elongation | Laumontite + calcite |
| 176R-1 (Piece 25, 106–109) | Vein | Very hard colorless mineral + pyrite | Quartz >> pyrite |
| 181R-1 (Piece 18, 67–71) | Vein | White mineral, fizzes with deionized water | Calcite > laumontite + chlorite |
| 184R-1 (Piece 18, 92–97) | Vein | Colorless (white streak) large (1 cm) acicular/prismatic crystals | Laumontite > actinolite |
| 186R-1 (Piece 27, 117–121) | Vein | 1 mm powdery white zeolite + green mineral | Laumontite, actinolite (+ other zeolite) |
| 187R-1 (Piece 6, 28–29) | Vein | 0.5 mm flaky white vein: anhydrite, carbonate, zeolite | Laumontite + actinolite + calcite |
| 187R-1 (Piece 20, 81–84) | Vein | Patch on back of core. White powdery, carbonate | Calcite + chlorite |
| 189R-1 (Piece 1, 0–15) | Vein | Patchy light green chlorite + actinolite with white mineral + pyrite + chalcopyrite | Chlorite + calcite + actinolite + laumontite + pyrite |
| 189R-1 (Piece 1, 3–6) | Vein | 0.5 mm crumbly zeolite with chlorite margins | Chlorite + epidote + pyrite + laumontite |
| 191R-1 (Piece 1, 3–4) | Vein | 0.5 mm crumbly zeolite with chlorite margins | Quartz + chlorite |
| 194R-1 (Piece 3, 8–13) | Vein | Sheared vein along possible dike margin | Quartz + chlorite + calcite + sphalerite + pyrite |
| 198R-1 (Piece 3, 16–16) | Vein | Prismatic white crystals | Laumontite, quartz + chlorite |
| 202R-1 (Piece 2, 16–23) | Vein | White well-cleaved mineral with quartz + actinolite | Laumontite > actinolite + quartz +chlorite |
| 214R-1 (Piece 17, 85–97) | Vein | White vein with prismatic crystals | Quartz, laumontite, chlorite, minor prehnite |
| 214R-1 (Piece 19, 104–107) | Rock | White crumbly completely altered gabbro | Quartz, hornblende, albite, minor laumontite, pumpellyite, epidote, prehnite |
| 214R-1 (Piece 23, 119–120) | Rock | White crumbly completely altered gabbro | Quartz, hornblende, laumontite, magnetite, chlorite, albite |
| 219R-1 (Piece 15, 62–63) | Vein | 1.5 mm white late-stage vein that follows amphibole vein and dark green halo | Quartz, chlorite, albite, hornblende |
| 220R-1 (Piece 20, 103–107) | Vein | Dark green chloritic halo and a 1 cm quartz + epidote + chlorite + laumontite vein | Quartz, chlorite, laumontite, hornblende, minor epidote |
| 222R-1 (Piece 8A, 67–71) | Vein | Dark green chlorite + amphibole vein with quartz | Chlorite, quartz, amphibole, minor epidote |
| 222R-1 (Piece 19B, 146–148) | Vein | Chlorite + actinolite vein | Chlorite, hornblende |
| 223R-1 (Piece 8C, 51–52) | Vein | Chlorite + actinolite vein | Chlorite, hornblende |
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