About the Igneous rock (3rd option), FGDC 723 hatch pattern
Igneous rock (3rd option) lithology symbol, scattered dots, dashes and angle marks. FGDC geologic map lithology pattern 723, for map and section drawings.
Kind: a repeated motif that does not fill the plane.
The download is one AutoCAD .pat file. Downloads are metered; a Hatchy Pro license lifts the limit.