I dont think its fuchsite which is a very low grade metamorphic mica common to "greenschist facies" its a green slimey slightly expansive mica that turns to clay when exposed to .
The only way to tell if these are meteories is to get em examined or do a cross section, polish the cross section and do an acid etch to draw out the angular "widmenstaaten figures".
Its really hard to tell from photos like these. They do have reaction surfaces from their incoming ride but they also could be, as you said ferrochrome which is a brittle product of the first stages of chrome production. They take the chromite ore and hit it within an arc furnace and the result is a dark surfaced brittle granular product. They then break it into chunks about that size and further react to make either metal ingots, pigments or sponge (much like Ti).
Im leaning toward the ferrochrome guess.