Prase rough PRR114 polished noreena It often contain layers and

It often contain layers and nodules of red chert

Bauxite is the main raw material used in the commercial production of aluminium

From the same outcrop as Pseudogymnosolenid type which occur as a substrate beneath these ones

POP162   Pink Opal slab

Prase rough PRR114 polished noreena It often contain layers andPRR 114. Dimensions at widest points approximately 130 mm x 95 mm x 70 mm thick. Weighs 1,492 grams. Prase is a chrome rich chert. The green colour usually derives from minor mineral content, most commonly the green chromiferous muscovite mica, fuchsite. There are numerous Prase deposits in the Pilbara region of Western Australia.