Another example is on this DVD Raging Waters, which has a section with Len Cram at Lightning Ridge. It shows opals that have been grown in weeks in Len’s outback corregated-iron laboratory. For another example see Opals from bacteria? published in 2000.
Mainstream geologists are catching up, but they still do not seem to know about Len Cram’s pioneering work. If they had read the writings of biblical geologists they would have known long ago.
The latest from mainstream geologists is in a report in June 2011 by the Geological Survey of New South Wales. It said:
The time taken for the formation of opal is therefore probably of the order of weeks to months and not the hundreds of thousands of years required by the conventional weathering model.
Notice “weeks and months”. That’s a big difference from “hundreds of thousands of years”!
The opals in Australia formed as the waters of Noah’s Flood were rising on the earth, not long before they reached their peak.
Rapid opals demolish another one of the many false beliefs that stop people believing Noah’s Flood happened.
Watkins, J.J., Behr, H.J. and Behr, K., Fossil microbes in opal from Lightning Ridge—implications for the formation of opal, Quarterly Notes 136, Geological Survey of New South Wales, June 2011.
A pdf of the report is available.