Geology Specimen Bags. Available in 'Minigrip Easy-to-Seal' Plain bags, Write-on bags or Heavyweight bags, 'Open-top' Heavy Duty Geology Sample bags, and 'Drawstring Seal' Cloth bags. All very handy for fossil hunting or collecting small geological samples. Don't forget our Fine Tipped Marker Pens, Bag Tiles, Aluminium Tags, and our Sample Transportation System the "Beach Cart", which will all help aid you in your field work.