Obsidian: Rocks we know we knowDec 21, 2017
$5.50 inc GST
Amygoidal basalt from the Tertiary Main Range volcanic group which overlies the Marburg (sedimentary) Formation, South East Queensland.
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 45mm in one dimension.
1 in stock