size: 750560 sha1: 98178af5820d01539ea8610b6db3387de7640e80 sha256: 822e81bd5224dc5bd45cb57e42fc50f1422cb6d40bbdd5e374ae92c0aac7c144
size: 502943 sha1: 90c61bb187348092f46ea6ff03b43be9ed8bc3a2 sha256: 0f23713f165f286cc6de9c7303e37b93e6a6f52a6384b289540013bc162536b0
How was this rock formed and what minerals make up it’s composition?
the light and dark lines in the rock are not striations but layering in the rock itself.