Any Idea Where This Rock Came Form?

(& What It Is)

(It's bound to be from the Stewarts - and I was guessing ~MSH~ - but...)

all (1566 x 1019):

In this image, you can see:

• a nice cool-feeling greenish mineral making up most of the rock
  • I thought it looked an awful lot like pectolite in that way - but it doesn't (to me) in its xl form/habit.
• a few very cool perfectly clear (almost(?)) cubes, truncated on (some of) their corners

The best I've been able to reckon, these may all be hemimorphite - but I'm not at all convinced.

You can't see the fact that many of these specimens have a large proportion of what looks to be a native metal.

My best guess would be galena, although I don't get any lead smell, nor the cubic fracture/parting.

Only a very few places show any structure that might give a clue.

This one says it's taken from the/a "end":

(1625x1076)

Whatever, it shows the clear ~cube~s up close.

The green is exaggerated here, because of the brighness & contrast settings.

This one is as far as I could zoom in on a feature that looks like a ~rosette~ of xls:

I guess this one actually came out better for showing both that feature and a whole bunch of simmilar structure down in one of the main vugs.

It looks almost like tetrahedral(?) gmellinite here, but it doesn't at all under the microscope.

& here's a zoom in on one of the triangular faces that's a truncation of the ~cube~s: