GRD0451S0
AR-09
Micaceous Extrusive
Mesozoic › Cretaceous › Late Cretaceous › Cenomanian
93.5
-
99.6
0
Ritter 154 › Cabinet 16 › Drawer O
lamprophyre
original description: biotite, orthoclase, nepheline, analcime (IUGS classification is minette).
-
Arkansas alkaline province
Arkansas
Paron, AR, north of Benton. Precise location in Benton dike swarm uncertain.
Latitude: 34.4°
Longitude: -92.6°
