Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Stone description: argillaceous

Wall Number Sort ascending Country State Classification Source
9RB37 United States Oregon Sandstone Oakland
9LA28 United States New York Sandstone Warsaw
8RA3 Portugal Limestone Janianes, Coimbra
8La41 United States Mississippi Sandstone Rankin Co.
7La2 Portugal Limestone Porto Barrao, Coimbra
6RA2 United States Pennsylvania Sandstone Columbia
14LA46 Portugal Limestone Janianes, Coimbra
14LA44 Portugal Limestone Serra de Boa Viagem, Coimbra
12rb12 United States Ohio Dolomite Bath Twp. Allen Co.
12RA23 United States Tennessee Limestone Nashville
12RA13 United States Ohio Dolomite Lima
11La14 United States Iowa Limestone Charles City
10LB7 United States Missouri Limestone Clinton
10LB6 United States Missouri Limestone Clinton
10Lb19 United States Pennsylvania Sandstone Stoop's Ferry