Announcement

Collapse
No announcement yet.

What type of material

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Kaz
    commented on 's reply
    Thanks

  • AJGamby
    replied
    The luster is just from the water wear, I would have to go with it being Normanskill or even esopus chert

    Leave a comment:


  • pkfrey
    commented on 's reply
    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.

  • SurfaceHunter
    replied
    The 2nd picture shows a bulb of percussion which wouldn't be slag but the other 2 pictures look like slag.

    Leave a comment:


  • tomf
    replied
    Looks like dacite to me. Is that possible in Long Island?

    Leave a comment:


  • Kaz
    commented on 's reply
    I am on Long Island. I was figuring it was flint. Just a really rare thing to find around here. Thanks

  • pkfrey
    replied
    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.

    Leave a comment:


  • kayakaddict
    replied
    Maybe just black flint, a little water worn. What part of NY are you in?

    Leave a comment:


  • Kaz
    replied
    Hi Cecilia I can see the pics but I will try again

    Click image for larger version

Name:	IMG_6160.JPG
Views:	213
Size:	50.0 KB
ID:	551825

    Click image for larger version

Name:	IMG_6156.JPG
Views:	202
Size:	76.4 KB
ID:	551826
    Click image for larger version

Name:	IMG_6155.JPG
Views:	198
Size:	74.3 KB
ID:	551827

    Leave a comment:


  • Cecilia
    replied
    Uh-o Kaz, no pics came thru! I’m studying black minerals now, so hurry up and re-post! Need more lessons....

    Leave a comment:


  • Kaz
    started a topic What type of material

    What type of material

    Hi all. I recently found this chunk of black material. Not something I'm used to seeing around here.



Working...
X