They are pretty small Eu. Wolframite was mined a few miles away a 100 years ago. It came from pegmatite and these rocks did not. They came from a hydrothermal vein in a shear zone. Under a lens you can see the flat tabular structure better than the pictures. All the crystals in this vein are small as they must have cooled fairly quickly. Just curious if it's wolframite or something else.