Mookaite石——西澳大利亚的装饰石

Mookaite石是一种吸引人的多色装饰石,产于西澳大利亚Kennedy山脉西缘Gascoyne河以北的少数地方。从岩石学上,Mookaite石由Windalia放射虫岩层的硅化放射虫岩构成,该岩层为Carnarvon大盆地沉积序列的一部分。硅化作用形成瓷状岩后,Fe染色导致其具有引人瞩目的黄色、红色、紫色和棕色图形。瓷状岩细粒,坚硬,无定向性,抛光性极好,在世界范围内广受欢迎。

Mookaite——A Western Australian Ornamental Rock

Mookaite is an attractive varicoloured ornamental rock that is mined from small locales situated north of the Gascoyne River on the western margins of the Kennedy Ranges in Western Australia. Petrographically Mookaite comprises silicified radiolarite of the Windalia Radiolarite formation,part of the sedimentary sequences of the large Carnavon Basin. Subsequent to the formation of porcellanites by silicification,iron staining has resulted in the development of attractive yellow,red,purple and brown patterning.The porcellanite is fine-grained,hard and has no directional weaknesses;it takes an excellent polish and has worldwide popularity.