Polished fossil stromatolite. Alcheringa narrina. ALC159 mookaite Amethyst crystal cluster from Wyloo

Amethyst crystal cluster from Wyloo

60 mm x 40 mm  x 13 mm

Dimensions at widest points approximately 100 mm x 60 mm x 11 mm  thick

Weighs 308 grams

BM313  Brecciated  Mookaite slab

Polished fossil stromatolite. Alcheringa narrina. ALC159 mookaite Amethyst crystal cluster from WylooALC159 Fossil stromatolite , polished on one side with natural weathered exterior on rear. Small pyrite cubes interspersed ! Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Dimensions at widest points approx. 120 mm x 85 mm x 50 mm thick. Weighs 741 grams.