Obsidian: Rocks we know we knowDec 21, 2017
$5.50 inc GST
Highly compacted Triassic conglomerate containing highly weathered clasts mostly up to 1cm in diameter of quartz, basalt and other igneous rocks. Matrix red in colour.
Although highly compacted and located close to an andesitic intrusion, despite this, the specimen is classified as sedimentary. Highly weathered clasts indicate source material weathered in a high energy watercourse.
Images are examples of specimens only.
Size and shape may vary.
Specimens are usually no smaller than 60mm in one dimension.
Ask about availbility of large shelf specimens.
9 in stock