Azurite Sun AZ151 black jasper The interesting cylindrical cavities are

The interesting cylindrical cavities are all that remain of fossil belemnites which were a squid-like creature with a tapering torpedo or bullet shaped body

OJ162  A rough rock

DO154 Dendritic Opal rough rock

BM308  Brecciated  Mookaite slab

This unusual piece displays peanut wood transitioning into white radiolarite alongside lilac Mookaite

Azurite Sun AZ151 black jasper The interesting cylindrical cavities areAZ151 Azurite sun mineral specimen. Dimensions at widest points for entire specimen approx. 105 mm x 75 mm x 28 mm thick. Weight is 229 grams. The matrix that this copper based mineral forms on is kaolinite. From Malbunka copper mine in Northern Territory, Australia.