Obsidian: Rocks we know we knowDec 21, 2017
$5.50 inc GST
Typical olivine rich basic basalt from the Tertiary Main Range Volcanics surrounding Toowoomba. Mapped as Tm on the Moreton 1:500,000 map sheet.
Images are examples of specimens only.
Size and shape may vary.
Specimens are usually no smaller than 75mm in one dimension.
59 in stock