Announcement
Collapse
No announcement yet.
What type of material
Collapse
X
-
The luster is just from the water wear, I would have to go with it being Normanskill or even esopus chert
-
Normanskill outcrops in the Hudson Valley, not to far removed from Long Island. You can see a bulb of percussion and conchoidal fracturing on slag if a chunk is hit by the plow, or banged against another rock by erosion. The smoothness along those outer ridge lines really makes this look like slag. The piece has a translucent look to it, like opaque glass. But IDK from the photo.
-
The 2nd picture shows a bulb of percussion which wouldn't be slag but the other 2 pictures look like slag.
Leave a comment:
-
I am on Long Island. I was figuring it was flint. Just a really rare thing to find around here. Thanks
-
If the color is true, and it's chert, it's a large flake of Normanskill chert. But it also somewhat looks like slag glass.
- Likes 3
Leave a comment:
-
Maybe just black flint, a little water worn. What part of NY are you in?
Leave a comment:
-
Uh-o Kaz, no pics came thru! I’m studying black minerals now, so hurry up and re-post! Need more lessons....
- Likes 1
Leave a comment:
-
Leave a comment: