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Specimen List

Mookaite Slab
Mookaite Jasper is a silicified radiolarian sedimentary rock (chalcedony) from Mooka Creek, Western Australia, composed mainly of SiO₂ with iron oxide colorants. It has a white streak, hardness 6.5–7 Mohs, SG ~2.6, no cleavage, and a conchoidal fracture. Its earthy reds, yellows, creams, and purples make it highly prized in lapidary and decorative uses, and it is unique to Australia.
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