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Queensland Mineral – Rain Forest Jasper [Spherulitic Rhyolite] from the Mount Hay Volcano
![Queensland Mineral – Rain Forest Jasper [Spherulitic Rhyolite] from the Mount Hay Volcano](http://www.voyagerhobart.com/wp-content/uploads/2025/03/Mt-Hay-Jasper-e1743230338733.jpg "Queensland Mineral – Rain Forest Jasper [Spherulitic Rhyolite] from the Mount Hay Volcano")
Short Description
Mount Hay is to the west of Rockhampton in Queensland. It is an extinct volcano and it was the volcanic environment that gave rise to this unique form of rhyolite. It is called rainforest jasper because of the rainforest like colour palette.
The underlying rock form is high in silicon and the long cooling process from the volcanic activity allowed for numerous inclusions of quartz, chalcedony etc.
A sizeable example 14.0cm by 9.0cm, 1.0cm deep, weighing 390gm
Striking Mount Hay Jasper – a nice piece
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