George E. Mustoe and Elizabeth T Smith, 2023, Timing of Opalization
at Lightning Ridge, Australia: New Evidence from Opalized Fossils.
Minerals 13(1471):1-43.
[www.researchgate.net]

More about Australian opalized fossils.

Christian Voiculescu-Holvad, 2018. The Opalised Fossils of Australia:
Mineralogical and Paleontological Treasures from the Australian Outback
[www.researchgate.net]

Opalized fossil insect from Indonesia

Fossilized Cicada Entombed In Opal Reveals Precious
Gems Can Contain Ancient Life
Rachael Funnell, IFL Science, October 7, 2023
[www.iflscience.com]

Rare Fossil Reveals Cicada Entombed in Opal
An insect trapped in a precious gem points to new places to search for ancient life
Carolyn Wilke, Scientific American
[www.scientificamerican.com]

The open access paper is:

Chauvire, B., Houadria, M., Donini, A. et al. Arthropod entombment in
weathering-formed opal: new horizons for recording life in rocks.
Science Reports 10, 10575 (2020). [doi.org]
[www.nature.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)