The horizontal asymmetry of single crystals and crystal aggregates in flat-floored vugs at Pine Point, N.W.T., indicates that solution movement during sulfide deposition took place in both directions along a path trending N50 degrees E (parallel to the Presqu'ile barrier complex) and along paths southeast of that trend. This solution movement was controlled in part by the local joint system. The abundance of paragenetically early botryoidal sphalerite aggregates and skeletal galena in high-grade ore "plums" suggests that sulfide precipitation took place when the moving solutions contacted isolated sulfur-rich areas or patches of sulfate-reducing bacteria.

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