Sulfur has arrived!

Sulfur is a bright yellow to yellowish-brown, soft mineral being only a 1.5 to 2.5 on the Mohs hardness scale.

Do you know Volcanic Breccia?

Volcanic Breccia is a unique extrusive igneous rock that is has large, angular fragments stuck in a fine-grained rock background. This rock forms during an eruption when when rock fragments are plucked off of the inside wall of the volcano and are stuck in the lava, or when rock fragments are picked up from the ground by flowing lava.

Do you know Sandstone?

Sandstone forms from beach sand-sized quartz grains that are glued together with quartz or calcite or compressed until they harden into a rock.